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Category: Residential wall foam

Contractor: Innovative Insulation Solutions. Ltd

Project: 1225 Judson

Installer: Ian Maple and Jose Vera

Location: 1225 Judson, Evanston ,IL

Type of Job: Total Building Envelope Insulation

Project Description: Jim Blake, Homeowner, wanted the best insulation available in today's market. He

chose SPF insulation. His home is two blocks off lake Michigan in Evanston, IL, and built in the late 1800.

The project was a total gut/rehab of the building. All four floors were being re-built. The third floor was all

cathedral ceilings.

A mixture of open cell and closed cell SPF was used. Closed Cell (Corbond) was used on all exterior walls

(basement, first, second, and third floors), and cathedral ceilings of the third floor (i.e. the entire roof

structure). Open Cell (Sealection 500) was used on the basement, first and second floor ceilings and on ALL

interior walls.

Benefits of using Foam: Jim Blake choose SPF insulation because of its superiority over all other insulation

materials.

 

 Innovative Insulation Solutions, Ltd.  

Chicago Green Permit -Hybrid House

th

444 East 44Street, Chicago,  IL

Installer: Mike Goodmand and Martin Gudino 

Type of Job: Entire Building Envelop -Walls and Roof Structure 

Square footage of Job: 2000 Square Foot House 

Equipment Used: Gusmer HF-1600 / Gap Pro Guns 

Number of people needed for the Job: 1 -Two ma 

Number of days required by the Job: Four Days 

Special Requirements: replace this text 

Foam and coatings used: Corbond Zero ODP 

Project Description:

The Hybrid House is a 2,000 square foot passive solar, super-insulated, energy efficient single-family 

residence that was design as a model representing a new paradigmfor America. With compact 

fluorescent lighting through out, energy star rated appliances, a geothermal heat pump for backup heating 

and cooling, a 4.8 kW photovoltaic array and solar thermal for the production of hot water, this project 

used all the technology available for energy conservation and clean energy generation. As part of this mix, 

Julian Dawson chose Closed Cell SPF insulation because of its superior R-Value per inch and its ability to 

act as both an air and moisture barrier. 

The house had been occupied for seven weeks at the end of 2007, and is performing as expected-near 

zero energy bill; a model of energy efficiency and clean energy generation. 

Benefits of using Foam:

Closed Cell SPF insulation because of its superior R-Value per inch and its ability to act as both an air 

and moisture barrier. 

Industry Excellence AwardsIndustry Excellence AwardsIndustry Excellence AwardsIndustry Excellence Awards

Category:  Residential Wall Foam

 

 

 

--------------------------------------- 1

 

Noise

Control

Sound Advice

for TodayÕs

Families

 

 

 

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--------------------------------------- 3

 

Contemporary 

Living Is Noisy

TodayÕs homes are filled with decibel-raising high-

tech gadgetry including big screen TVs,computer

games,CD players and stereo systems. Add to this the

changing dimensions of todayÕs homes Ð we now

have home offices,media rooms,spacious kitchens

with Ôgreat roomsÕattached Ð and the net result is a

noise-laden environment that can adversely affect

your familyÕs sleep,stress levels,and quality of life.

Consequently, more

and more homeownersSources of Noise

in a Typical Home

are looking for ways toDishwashers, washers, dryers,

garbage disposals, blenders,

ÒsoundproofÓtheirvacuum cleaners, radios,

computers, CD players, stere-

homes to diminishos, TVs, lawnmowers and leaf

unwanted noises fromblowers.

both inside and out-

side the home. One of

the most economical

ways to make a home

quieter is to install

fiber glass insulation. A

good sound insulation

package not only

increases the comfort of your home but also adds to

its value.

1

 

 

 

--------------------------------------- 4

 

What is Noise?Noise Can Adversely

Noise is simplyAffect Quality of Life

Noise can affect sleep, blood

pressure and digestion.  Inunwanted sound that

primitive times, loud noises

were danger warnings.is transmitted by vibra-

Though this is not true

tion through air, walls,today, the body still reacts

biologically as if they were.floors or ceilings. In a

home, most people

consider noise to be just about any sound other

than those made by what they are doing. For

example, if a person is on the phone, they donÕt

want to hear the tele-

vision in the nextNoise Is Measured

in Decibels (dB)

room. Conversely, if anWhispers Ð about 20 dB

person is watching TV,

nNormal conversations Ð

they donÕt want to beabout 60 dB

nCity traffic Ð about 80 dB

able to hear the tele-nLawn mowers/leaf blowers

phone conversation.Ð around 103 dB

Unfortunately, mostRepeated exposure to sounds

over 85 decibels is considered

walls and ceilings indangerous to hearing, and the

louder the noise, the less time

todayÕs homes areit takes to damage hearing.

only marginally effec-

tive at blocking noise.

2

 

 

 

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STCs, IICs and Sound Transmission

In the 1970Õs,HUD/FHA set minimum requirements

for Sound Transmission Class (STC) ratings for air-

borne noise reduction through walls and partitions.

An STC value is a single number rating used to charac-

terize the sound insulating value of a partition (wall,

floor,or ceiling). A partition prevents sound from

being transmitted from one area to another. The high-

er the STC rating,the less sound will be transmitted

through the wall,floor,

What Do STCs

or ceiling. DifferentMeasure?

STC ratings are recom-STC ratings measure trans-

mission of speech and other

mended for differentsounds in a way that agrees

rooms within the homewith how the human ear

perceives it.

(see below).

HUD/FHA also set mini-

mum requirements for

Impact Insulation

Classes (IICs) for impact

noise levels through

floors. As with STCs,

the higher the IIC value

of a floor/ceiling,the better its ability to control impact

sound transmission. An IIC rating of 50 or higher is

considered acceptable.

Table 1 Ð Noise Control (STC) Ratings

56 & UpExcellent

46 to 55Very Good

36 to 45Good

26 to 35Marginal

15 to 25Poor

Sound Transmisson Class (STC)

Sound Transmisson Performance

Recommended STCsan STC of 45 to 55 is good, and above 55

For residential partition walls, recom-is excellent.  Living rooms should be a

mended STCs depend on the particularcouple of points higher; bathrooms and

type of room:  for example, for bedrooms,kitchens up to 5 points higher.

3

 

 

 

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Noise Control Strategies

Most conventionally built partition walls made of

lumber and drywall have poor STC ratings ranging

from a bare minimum of about 15 to 35. There are a

number of measures that can be taken to raise the

STC number, including:

Acoustic Insulation

Fiber glass Insulation

Fiber glass acoustic batt

By far the easiest and

insulation is economical,

most economicallightweight and easy to

install.  Acoustic batts are

method for controlling

essentially the same as their

noise is to install insu-corresponding thermal

batts, except that they may

lation in the wall cavi-differ slightly in size and

density.  A partition with

ty. A 2x4 wood stud

either fiber glass acoustic or

thermal batts having similar

wall with 1/2 inch gyp-

properties achieve the same

sum board and 3Ð1/2STC rating.

inches of acoustic fiber

glass batt insulation absorbs and dampens sound

waves and results in an STC of 38.

Resilient Channels Plus Acoustic Insulation

An even more effective way to increase the STC rat-

ing is to use resilient channels between drywall and

studs or joists. Properly installed resilient channels

will break the vibration path which will help reduce

sound transmission. Typically, the drywall is

screwed to a flange on these channels, not to the

studs.

Combining insulation,

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gypsum board mount-aaaaaaaaaa

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a a a a aaaaaaaaaaaaaaaaaa aaa

ed on resilient chan-aaaaa aa aa aaa aaaaaaaaa aaaaaaaaaa aaaa aaa

a a aaaaaaaaaaa aa aaaa aaaaaaa aaaa aaa aaa

aaaaaaaaa aaaaa aa

nel, and two layers ofaaaaaaaa

a a a a aaaaa aa a aa aa aaaaaaaaaaaaaaaa a

a a a aaaaa a a aa aaaaa a a aaaaaaaaaaaaaaa

1/2-inch gypsum onaaa a aaaaaa aaaaaaaaaaaaa

a a aa aa aa aa a a a a aaaaaaaaaa aaaaa aa aaa aa a aaa aa

one side achieves aa a aa aaaaa a aaaaa aa aaaaaaaaaa

a aaa aaa aaaaaaaa a a a aaaaaaaa aaaa aaaaa

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very good STC ratingaa aa aa aa a aaaaaaaaaaaaaaaaaaaaaa

a a aa a a aaaaaaaaa aaaaaaaaa

of 52.aaaaaaaaaaaaaa

4

 

 

 

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Other Sound Control Strategies

Other sound control strategies include using heavier

building materials (like adding one or two layers of

gypsum to a wall construction) to block the path of

the noise through walls, floors, or ceilings. While

this creates thicker walls, they may not be struc-

turally practical or cost effective.

t Guidelines For Installing

Insulation in Exterior Walls

Exterior walls should be

constructed with resilient chan-

nels and fiber glass insulation in

the stud cavity.  If a residence is

impacted by overhead aircraft,

then resilient channels should be

used in roof/ceiling assemblies as

well as using at least 9 inches of

blown-in fiber glass insulation in

the attic.  The insulation should

overlap the top of the joists by

at least 1 inch.  Make sure the

vapor retarder is toward the

heated side of the home.

Humid climates may require

the vapor retarder to be

s Guidelines For Installinginstalled facing the exterior of

Insulation in Interior Wallsthe wall.  (Check local

building requirements for

The basic guideline forlocation of vapor retarder.)

installing insulation into side-

walls is to fit the ends of batts

snugly against top and bot-

tom framing.  (Check local

building requirements for

location of vapor retarder.)

Working from the top down,

staple the pre-formed flanges

about 8 inches apart until you

reach the bottom.  Continue

this around the perimeter of

the room.

5

 

 

 

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Insulation Choices and STC Ratings

Fiber glass and cellulose are the two most common-

ly available insulation materials used for sound con-

trol. Cellulose manufacturers claim that their insula-

tion, when used in a partition, gives higher STC val-

ues than fiber glass insulation. This, however, is not

accurate.

The fact is there is no significant difference in STC

ratings between using fiber glass or cellulose insula-

tion. This has been scientifically proven by numerous

sound transmission loss tests conducted at independ-

ent laboratories. Test results have shown STC ratings

for walls using either cellulose or fiber glass insula-

tion are within 1 or 2 points of each other.

Sound Control Practices

nInsulate heating and air conditioning ducts by

using fiber glass flex ducts, fiber glass duct

board or by wrapping or lining the ducts with

fiber glass insulation.

nInstall thick carpeting and padding throughout

your home to help reduce impact sound.

nCaulk around windows and use weatherstrip-

ping at the bottoms of your exterior doors.

nUse solid wood or mineral core doors

where privacy is demanded.

nInstall acoustic ceiling panels.

nDouble or triple pane glass and storm win-

dows can all help reduce sound transmis-

sion through windows.

nSelect quiet, high quality appliances.

6

 

 

 

--------------------------------------- 9

 

nInstall telephones, doorbells, intercom or audio

built-ins on interior walls only, never on com-

mon walls or corridor walls.

nCaulk holes made by wiring which penetrates

connecting structures with elastic non-harden-

ing caulk or dry packing.

nSeal openings around ceiling fixtures so they

are airtight.

nMake use of plants,draperies and wall hangings

throughout your home. The more ÒsoftÓobjects

in a room,the more sound is absorbed.

nMinimize window sizes facing noisy areas.

nAsk your builder to make sure electrical boxes

fit snugly in drywall. Gaps can be caulked to

reduce sound leaks.

nAsk your builder to develop a well-planned lay-

out to minimize the noise of flowing water.

Insulate walls containing drain pipes.

nAsk your builder to seal under all bottom plates

as the walls are being built.

nAsk your builder to avoid undercutting doors if

possible. Frequently,doors must be undercut to

get proper air circulation for the HVAC. A sim-

pler solution to ensure proper ventilation is to

keep doors open when rooms are not in use.

7

 

 

 

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ABOUT NAIMA

NAIMA is a trade association of North American

manufacturers of fiber glass, rock wool, and slag

wool insulation products. NAIMAÕs role is to pro-

mote energy efficiency and environmental preserva-

tion through the use of fiber glass, rock wool, and

slag wool insulation products and to encourage safe

production and use of these insulation products.

NAIMA Building Insulation Committee:

CertainTeed Corporation, 800-233-8990

750 E. Swedesford Road,Valley Forge, PA 19482

Johns Manville, 800-654-3103

P.O. Box 5108, Denver, CO 80217

Knauf Fiber Glass, 800-825-4434

One Knauf Drive, Shelbyville, IN 46176

Owens Corning, 800-GET-PINK

One Owens Corning Parkway,Toledo, OH 43659

For additional information, contact:

NAIMA

44 Canal Center Plaza

Suite 310

Alexandria, VA 22314

Tel: 703-684-0084

Fax: 703-684-0427

E-mail: insulation @naima.org

Website: http://www.naima.org

8

 

 --------------------------------------- 1

 

Sound Control For

Commercial And

Residential Buildings

 

 

 

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Table Of Contents   

How Noise Effects Us

Methods Of Sound Control  1

nwanted sound Ð or

Sound Transmission Class (STC) 

noise Ð that travelsAnd Sound Control  1

Ufrom room to room,The Effects Of Insulation Thickness 

And Density On STC Ratings 2

from home to home, or office toControlling Impact Noise 2

office, may have a direct impactImproving Office To Office 

Sound Reduction 2

on peopleÕs notions of privacy,

Controlling Exterior Sounds 3

as well as their work efficiency.

Examples Of Ways To Construct Walls And

The noise produced by appli-Floors/Ceilings To Achieve Desired STCs 4

ances, piping, heating and air-Sound Isolation Design Criteria5

conditioning systems, phones,Guide SpeciÞcation for Fiber Glass 

Acoustical Insulation7

radios,TVs and talking are

Typical Wall Assemblies

among the major reasons people

Single Wood Stud Walls 8

Staggered Wood Stud Walls 9are dissatisÞed with the privacy

Double Wood Stud Walls 10

Metal Stud Walls 11found in homes or office build-

Exterior Walls 12

ings.Additionally, external noises

Typical Floor/Ceiling Assemblies14

such as traffic, sirens and

Recommended Construction 

Methods for Controlling Sound 15extreme weather conditions are

Glossary 20equally disturbing. Designing

Bibliography  21structures to control noise effec-

tively can make homes and

offices much more pleasant

places in which to live or work.

 

 

 

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This Sound Control Guide recommends ways toDecibels And 

construct walls and other assemblies using Þber glassSound Transmission Class

insulation to help provide quality noise control.The decibel (dB) is used to express sound intensity

The North American Insulation Manufacturersor loudness.The more intense a sound,the higher the

Association (NAIMA) developed these recommenda-dB level.The sound transmission class (STC) is a

tions based on the results of numerous acoustical testsnumerical rating of the ability of a wall,ßoor/ceiling

using American Society for Testing and Materialsassembly or any other building element such as a

(ASTM) methods.However,the recommendations aredoor or window to minimize sound transmission.

presented here solely as a guide.NAIMA cannot guar-The higher the STC rating the more the sound is

antee,does not represent or warrant,and assumes noblocked or reduced by the building element (See Table

responsibility for building design or construction1).For party walls or walls separating dwelling units,

results based on information provided in this bookletan STC of 50 is considered barely adequate for

because many other factors Ð including overall designproviding privacy.STCs above 55 are required to

and workmanship Ð are outside its control.provide acceptable privacy.

TABLE 1 Ð STC Ratings

Methods Of Sound Control 

Noise is unwanted sound that is transmitted by vibra-

Sound Noise 

tion through air,walls,ßoors or ceilings.In a home orTransmission Speech Control

Class (STC)Audibility*Rating

office,there are three ways to control sound transmission:

15 to 25Normal speech easilyPoor

understood.

Increase the mass of partitions

25 to 35Loud speech easilyMarginal

understood.Normal 

Break the path of vibration

speech 50% understood.

Cavity absorption.35 to 45Loud speech 50% Good

understood.Normal speech

faintly heard,but not understood.

Increasing the mass of walls and other structures can

45 to 55Loud speech faintly heard,Very Good

present a problem in lightweight construction becausebut not understood.

the increased weight may not be structurally practical orNormal speech usually inaudible.

aesthetically pleasing,not to mention more expensive.55 and upLoud speech usually inaudible Excellent

Breaking the vibration path Ð commonly called

*Given a typical background noise level 

of 30 dB on the ÒlisteningÓside

discontinuous construction Ð offers a practical method of

reducing sound transmission by as much as 6 to 10 dB.

Cavity absorption,which uses Þber glass insulation

to Þll the space in walls and ßoors/ceilings,can further

improve performance of discontinuous constructionsacoustical analysis should be obtained from an acoustical

by 5 to 15 dB.engineer when isolating sound from locations such as

music practice rooms,recording studios,large conference

rooms and mechanical equipment rooms.

Sound Transmission Class (STC)

And Sound Control Ratings Based On Lab Tests

STC ratings are a measure of the effectiveness of a givenSTC ratings are based on laboratory tests conducted

partition construction in reducing airborne sound trans-under ideal construction conditions.Partition manufac-

mission.Because of the frequency range covered (125-turers acknowledge that the Þeld STC of a partition can

4000 Hz),STC ratings are best used to evaluate speechbe up to 15 - 20 points lower than laboratory values

privacy for partitions and ßoors/ceilings separating adja-depending on the quality of detailing and workmanship.

cent offices,rooms in one and two family dwellings,hospi-Therefore,the importance of communication between

tal patient rooms,classrooms,dormitories,apartments,the design team and the construction team cannot be

courtrooms,small conference rooms,etc.A more extensiveoveremphasized.

1

 

 

 

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Fiber Glass Insulation The Effects Of Insulation Thickness

Reduces Sound TransmissionAnd Density On STC Ratings

Fiber glass insulation in a partition or ßoor/ceilingInsulation thickness has a more signiÞcant effect on

assembly signiÞcantly reduces sound transmission.STC ratings than does density.For a typical steel stud wall

Italso reduces sound transmission in roof/ceilingconstruction,the Þrst inch of Þber glass insulation can

assemblies.It is economical,lightweight and easy toincrease the STC value 6 or more points.Each additional

install.Some Þber glass insulation manufacturers sellinch of Þber glass insulation increases the STC value from

acoustical or sound control batts for use in partitions.one to two points.Conversely,density variations have

These batts are designed for easier installation inminimal effect on the STC rating.(See Table 2.)

metal and wood stud partitions.They are essentially

the same as their corresponding thermal batts,except

that they may differ slightly in size and density.AControlling Impact Noise

partition with either Þber glass sound control or ther-Walls are rated only in terms of their STC value.

mal batts having similar properties would achieve theFloor/ceiling assemblies Ð because they must also

same STC rating.control sounds caused by impacts (such as walking or

moving furniture) Ð are rated in terms of their STC and

their impact insulation class,or IIC.

Factors That Degrade PerformanceA person walking on a ßoor creates impact noise

The presence of ßanking paths,interconnectingthat is readily transmitted to the room below.While

ductwork,non-airtight edge joints,inadequate doorcarpets and pads can cushion impacts and reduce the

and window constructions,untreated pipe andgeneration of impact noise,Þber glass insulation can

conduit penetrations,etc.,all degrade the expectedreduce impact and airborne noise transmitted through

performance of a sound rated assembly.When properthe ßoor/ceiling assembly.As with STCs,the higher the

attention to construction details are followed,ÞeldIIC value of a ßoor/ceiling,the better its ability to

STC values can be equal to or even greater than labo-control impact sound transmission.An acceptable IIC

ratory values.rating is typically 50 or above.

Differences Between Lab Tests

Not UnusualImproving Office To Office

Partitions with STC ratings within 1-2 pointsSound Reduction

(1-2 dB) of the listed criteria would still be accept-In offices where the separating partition stops at the

able given the anticipated tolerances in repeatceiling,sound can ßank around the partition by travel-

tests.In fact,differences between testing labs of 2-ing through the ceiling.This ßanking sound travels up

5 dB on identical test conÞgurations are notthrough the ceiling in one office,across the top of the

unusual.(Subjectively,the human ear wouldpartition and then down through the ceiling in the

consider a 1-2 dB change as ÒnondiscernibleÓadjacent office.In many offices this ßanking path is

at best,which is insigniÞcant.)signiÞcant and degrades the sound isolation between

offices.This is particularly true if the STC of the sepa-

STC Requirements Are From AIArating partition is greater than 45.

The STC requirements in Table 3 (pages 5-6) are from

the American Institute of Architects (AIA) and assumeTABLE 2 Ð STC Values of Equal Thicknesses of

acceptable background noise levels on both sides ofFiber Glass Insulation

the construction assembly.Normal background noise35Ú8" steel studs;single layer 1Ú2" gypsum board each side

on the listening side of a partition has the effect ofMaterialThicknessDensitySTC

masking transmitted sound that might otherwise beFiber Glass2"0.75 pcf46

objectionable.In fact,sound transmitted through a

partition will be inaudible if its sound level is belowFiber Glass2"1.30 pcf46

the level of the background noise.Fiber Glass2"3.00 pcf46

2

 

 

 

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Fiber Glass vs. Cellulose Insulationthe type of grid system.The CAC is the single

Manufacturers of cellulose insulation claim thatnumber rating used to express the sound reduction

their insulation,when used in a partition,givesor attenuation between two rooms sharing a

higher STC values than Þber glass insulation.Thiscommon ceiling and/or plenum (See ASTM standard

is not true.E 1414).These CAC improvements can be achieved

1

Numerous sound transmission loss testsby using unfaced 3Ú2 to 4 inch thick batts (R-11

conducted at independent laboratories have shownbatts).The batts only have to be placed on the back

that there is no signiÞcant difference in STC ratingsof the ceiling panels on both of sides of the parti-

using either Þber glass or cellulose insulation.Thetion a distance of 4 feet back from the partition.It is

STC ratings of walls using cellulose or Þber glassnot necessary to back load the entire ceiling in both

insulation are within 1 or 2 points of each other.offices.Care must be taken not to cover light

Þxtures with the insulation.The insulation may

Metal Framing vs. Wood Framingcause the Þxtures to overheat.

Light gage metal framing members are inher-

ently ßexible thus allowing the full potential ofInstall A ÒFuzzwallÓ

added cavity insulation to be realized.Single rowThe second method to reduce ceiling ßanking

wood stud framing,on the other hand,provides asound transmission is to install a Þber glass wall

high degree of mechanical coupling which canabove the separating partition.Such a wall or

provide a Òshort-circuitÓfor sound transmission.plenum barrier has been called a Òfuzzwall.Ó

In order to realize the full beneÞt of cavity insu-(See Þgure below.)

lation in wood framed construction,it is recom-

mended that the gypsum board be attached toFuzzwall Can Improve CAC 

either side of the wood framing members usingTests conducted by the National Research Council

resilient channels.Staggered or double rows ofof Canada have shown that a fuzzwall can improve

wood studs can also be used to achieve the samethe effective CAC of a ceiling by 10 to 15 points

beneÞt.Tests have also shown that there is nodepending on the type of ceiling panel in the ceil-

signiÞcant acoustical difference between 2x4 anding,the type of ceiling grid system and the thickness

2x6 inch wood studs.of the fuzzwall.For air return plenums,openings

can be provided in the fuzzwall for air ßow.These

openings would decrease the STC by approximately

Preventing Ceiling Flanking5 points.

Sound Transmission

Ceiling ßanking sound can be prevented by build-

ing partitions from the ßoor to the roof or ßoorControlling Exterior Sounds

deck above.However,many times this is not possi-Many residences and commercial buildings are

ble because of obstructions such as pipes,conduitadversely impacted by external sounds or noise.

and HVAC ducts in the ceiling plenum.In someTherefore,it is critical to control both interior and

HVAC designs the ceiling plenum is also used as anexterior noise.Typical exterior noise sources are

air return and partitions can not block the plenum.automobile and truck traffic,trains,aircraft and our

When this is the case there are two methods to

reduce ceiling ßanking sound.Basic fuzzwall conÞguration

Backload Ceiling Panels With Low Density

Fiber Glass InsulationCeiling/floor slab

The Þrst method is to back load the ceiling panelsStack of batts

with low density Þber glass insulation.The ceilingSuspended ceiling

attenuation class (CAC) can be improved by 6 to 15

points depending on the type of ceiling panel and

3

 

 

 

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neighbors.The best way to reduce the impact ofGuide SpeciÞcation 

exterior noise is not to build near these noiseFor Fiber Glass Acoustical Insulation

sources.When this is not possible then special meas-On page 7 is a guide speciÞcation that can be

ures must be taken to reduce their impacts.Theused by an architect to specify the acoustical insu-

shell of a residence or building must be designed tolation to be used in a wall or ßoor/ceiling assem-

keep out noise.bly to achieve a desired STC rating.This same speci-

Þcation can be used to specify the acoustical

Residential Constructioninsulation to be used to backload a ceiling system

In residences,exterior walls should beto achieve a desired ceiling STC rating.

constructed with resilient furring channels and

Þber glass insulation in the stud cavity.If a resi-

dence is impacted by overhead aircraft thenExamples Of Ways To Construct

resilient channels should be used in roof/ceilingWalls And Floors/Ceilings To

assemblies as well as using at least 9 inches ofAchieve Desired STCs

blown-in Þber glass insulation in the attic.TheBeginning on page 8 are examples of the most

insulation should cover the top of the joists by atcommon and typical wall and ßoor/ceiling

least 1 inch.assemblies that demonstrate how to improve

There should be a minimum number ofsound control performance by using Þber glass

windows and doors on the side of home facingbatts and blankets.Most of the examples shown

the exterior noise source.When windows arerepresent commonly used methods of construc-

necessary on this side,they should be soundtion;some variations of these constructions are

rated with an STC of at least 40.The same is truealso illustrated.

for doors facing a noise source.

Recent retroÞt programs done on residencesSTC Ratings

near airports to reduce interior noise levels dueThe STC rating indicated for each assembly,in

to aircraft have shown that it is very critical tomany instances,represents the median of a range

seal all air (sound) leaks in the building envelope.of STC values.These median values may or may

All fresh air intakes and exhausts must havenot be actual test results,but will provide an

silencers or mufflers.Most of the residences alsoaccurate estimate as to how the STC rating

had additional insulation installed in the attics towould be increased or decreased with progres-

further reduce overhead aircraft noise.sive changes in construction.ItÕs possible that an

individual insulation manufacturerÕs results

Commercial Constructionmight differ slightly from the median values;

In commercial buildings built near a highwayhowever,any such differences would be insigniÞ-

or train tracks,the exterior building walls shouldcant.More detailed sound control information

have at least an STC of 50.Windows and doorscan be obtained by contacting an insulation

should have at least an STC of 40 or 45 depend-manufacturer.

ing on the amount of window or door area.The

higher the window or door area the higher theFire Ratings

STC value.Roof/ceiling systems should also haveThe Þre ratings given are based on available

a minimum STC of 50 if aircraft ßy over the build-test information from NAIMA members and inde-

ing.Higher STC values may be required if aircraftpendent testing laboratories.The test method

ßy close to the building.In this case,an acousti-used is ASTM E119.An ÒNRÓindicates that the

cal engineer should be consulted.particular assembly illustrated is not rated.

4

 

 

 

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Table 3 Ð Sound Isolation Design Criteria

Type of Room(s) ConsideredAdjacent Area(s) Sound Isolation

Occupancy(Source)(Receiver)Requirement (Min.)

Executive areas, doc-OfficeAdjacent officesSTC 52

torsÕ suites Ð conÞ-General office areasSTC 52

dential privacyCorridor or lobbySTC 52

requirementsWashrooms and toilet areasSTC 52

Exterior of buildingSTC 37-60+*

Kitchen and dining areasSTC 52

Manufacturing areas and mechanical equipment roomsSTC 52+ 

Normal office areas ÐOfficeAdjacent officesSTC 45

normal privacyGeneral office areasSTC 45

requirementsCorridor or lobbySTC 45

Washrooms and toilet areasSTC 47

Exterior of buildingSTC 37-60+*

Kitchen and dining areasSTC 47

Manufacturing areas and mechanical equipment roomsSTC 52+ 

Any normal occupan-Conference roomsOther conference roomsSTC 45

cy, using conferenceAdjacent officesSTC 45

rooms for groupGeneral office areasSTC 45

meetings or discus-Corridor or lobbySTC 45

sionsWashrooms and toilet areasSTC 47

Exterior of buildingSTC 37-60+*

Kitchen and dining areasSTC 47

Manufacturing areas and mechanical equipment roomsSTC 52+ 

Normal businessLarge generalCorridors or lobbySTC 37

offices, drafting areas,office areasExterior of buildingSTC 37-60+*

banking ßoors, etc.Data processing areasSTC 42

Manufacturing areas and mechanical equipment areasSTC 47+

Kitchen and dining areasSTC 42

Office in manufactur-Shop and labora-Adjacent officesSTC 42

ing, laboratory or testtory officesManufacturing, laboratory, or test areasSTC 42+

areas requiring nor-Washrooms and toilet areasSTC 42

mal privacyCorridor or lobbySTC 37

Exterior of buildingSTC 37-60+*

Motels and urbanBedroomsAdjacent bedrooms, separate occupancySTC 48+

hotels (similar toBathrooms, separate occupancySTC 52+

apartments)Living rooms, separate occupancySTC 50+

Dining areasSTC 50+

Corridor, lobby, or public spacesSTC 48+

Mechanical equipment roomsSTC 52+ 

Exterior of buildingSTC 37-60+*

Apartments, multipleBedroomsAdjacent bedrooms, separate occupancySTC 48-55*

dwelling buildingBathrooms, separate occupancySTC 52-58*

Bathrooms, same occupancySTC 45-52*

Living rooms, separate occupancySTC 50-57*

Living rooms, same occupancySTC 42-50*

Kitchen areas, separate occupancySTC 52-58*

Kitchen areas, same occupancySTC 45-52*

Mechanical equipment roomsSTC 58-65*

Corridors, lobby, public spacesSTC 48-55*

Exterior of buildingSTC 42-60+ 

From The American Institute of Architects;Architectural Graphic Standards,Seventh Edition,pp 68 & 69.

* Depends on the nature of the exterior background noise Ð its level,spectrum  Use acoustical consultants for mechanical equipment rooms housing other

shape,and constancy Ð as well as on the clientÕs budget and on thermal consider-than air handling equipment Ð chillers,pumps,compressors,etc.Ð and for heavy

ations.Use qualiÞed acoustical consultants for analysis of high noise outdoormanufacturing areas employing equipment generating noise levels at or above

environments such as airport areas,highways (with heavy truck traffic espe-OSHA allowable levels or generating high vibration levels.

cially),and industrial facilities.

5

 

 

 

--------------------------------------- 8

 

Table 3 Ð Sound Isolation Design Criteria (continued)

Type ofRoom(s) ConsideredAdjacent Area(s)Sound Isolation

Occupancy(Source)(Receiver)Requirement (Min.)

Apartments, multipleLiving roomsAdjacent living rooms, separate occupancySTC 48-55*

dwelling buildingBathrooms, separate occupancy STC 50-57*

Bathrooms, same occupancySTC 45-52*

Kitchen areas, separate occupancySTC 48-55*

Mechanical equipment roomsSTC 58-65*

Exterior of buildingSTC 37-60+ 

Private, single familyBedrooms (livingAdjacent bedroomsSTC 40-48*

residencesrooms similar)Living roomsSTC 42-50*

Bathrooms, not directly connected with bedroomSTC 45-52*

Kitchen areasSTC 45-52*

Exterior of buildingSTC 37-60+ 

School buildingsClassroomsAdjacent classrooms Ð speech use onlySTC 42

Adjacent classrooms Ð speech and audiovisual useSTC 48

LaboratoriesSTC 48

Corridor or public areasSTC 42

Kitchen and dining areasSTC 47

ShopsSTC 52+

Recreational areasSTC 52+

Music roomsSTC 52+

Mechanical equipment roomsSTC 55+

Toilet areasSTC 47

Exterior of buildingSTC 37-60+ 

Large music orAdjacent music or drama roomsSTC 52+

drama areasCorridor or public areasSTC 52

Practice roomsSTC 52+

ShopsSTC 57

Recreational areasSTC 57

LaboratoriesSTC 52

Toilet areasSTC 52

Mechanical equipment roomsSTC 58-65+

Exterior of buildingSTC 47+ 

Music practiceAdjacent practice roomsSTC 52+à

roomsCorridors and public areasSTC 52+

Language labora-Same as for theaters, concert halls, auditoriums, etc.

tories

Counseling officesSame as for executive offices

Any occupancy whereTheaters, concertAdjacent similar areasUse qualiÞed acousti-

serious performanceshalls, lecture halls,Corridors and public areacal consultants to

are given (require-radio, TV, record-Recreational areasassist in the design of

ments may being studiosMechanical equipment spacesconstruction details

relaxed for elemen-Classroomsfor these critical occu-

tary schools or otherLaboratoriespancies 

types of occupancy)Shops

Toilet areas

Exterior of building

From The American Institute of Architects;Architectural Graphic Standards,Seventh Edition,pp 68 & 69.

* Depends on nighttime,exterior background levels and other factors thatà The STC ratings shown are guidelines only.These situations require,typically,

affect actual location of building.(Grades I,II,and III are discussed in ÒA Guide todouble layer construction with resilient connections between layers or,prefer-

Airborne,Impact and Structure borne Noise Control in Multifamily Dwellings,Óably,structurally independent,Òroom-within-a-roomÓconstructions.The level of

HUD-TS-24,1974,pp.10-9ff.)continuous background noise,such as that provided by the HVAC system or an

electronic masking system,has a signiÞcant impact on the quality of construction

  Discretionary Ð depends on clientÕs budget,climate,interior planning (closedselected and must be coordinated with the other design parameters.

vs.open),site planning,and other factors.Use qualiÞed acoustical consultants for

analysis of high noise outdoor environments such as airport areas,industrial facil-

ities,and highways.

6

 

 

 

--------------------------------------- 9

 

Guide SpeciÞcation for Fiber Glass Acoustical Insulation

Part 1 Ð Generalhandling,storage and protectionfor detailed speciÞcations.

during installation.

Select appropriate construction

1.01 SummaryB. Label insulation packages to[B. Type:2-1/2Ósteel stud.]

include material name,produc-

A. Provide glass Þber acousticaltion date and/or product code[C.Type:3-5/8Ósteel stud.]

insulation as indicated in build-

ing plans.Delete paragraph below if sections

01600 or 01620 are not included

in project manual.

1.02 Materials Provided inPart 3 Ð Execution

[C.Deliver and store materials

Other Sections

under provision of section

These sections are typically cross(01600) (01620).] 3.01 Inspection and

referenced.Delete sections notPreparation

included in project manual

1.06 LimitationsA. Examine substrates and condi-

A. Section 09250-Gypsum Boardtions under which insulation

A. Do not use unfaced insulation inwork is to be performed.A satis-

B. Section 09260-Gypsum Boardexposed applications where

factory substrate is one that

Systemsthere is potential for skin

complies with requirements of

C. Section 09100-Metal Supportcontact and irritation.the section in which substrate

Systemsand related work is speciÞed.

B. Obtain installerÕs written report

1.03 Referenceslisting conditions detrimental to

Part 2 Ð Products

performance of work in this

A. ASTM Standards

section.Do not proceed with

1. E 90, Laboratory2.01 Manufacturerinstallation until unsatisfactory

Measurement of Airborne Sound

Transmission Loss of BuildingName of insulation manufacturerconditions have been corrected.

PartitionsC. Clean substrates of substances

2. E 413, Rating Sound2.02 Materialharmful to insulation.

InsulationSpecify name of Þber glass

3. E 84,Test Method for Surfaceinsulation.3.02 Installation - General

Burning Characteristics ofA. Comply with manufacturerÕs

Building MaterialsA. Type:Unfaced glass Þber acousti-

cal insulation complying withinstructions for particular condi-

4. E 119, Method for Fire Teststions of installation in each case.

ASTM C 665.

of Building Construction

B. Combustion Characteristics:B. Batts may be friction-Þt in place

Materials

Passes ASTM E 136 test.until the interior Þnish is

5. E 136,Test Method forapplied.Install batts to Þll entire

Behavior of Materials in aC. Surface Burning Characteristics:stud cavity.If stud cavity is less

Vertical Tube Furnace at 750¡C1. Maximum ßame spread: 25.

than 96Óin height,cut lengths to

6. C 518,Test Method for2. Maximum smoke developed:friction-Þt against ßoor and ceil-

Steady State Thermal50 When tested in accordanceing tracks.Walls with penetra-

Transmission Properties bywith ASTM E 84.* tions require that insulation be

Means of the Heat Flow Metercarefully cut to Þt around

D. Fire Resistance Ratings:Passes

7. C 665, SpeciÞcation forASTM E 119 test.outlets,junction boxes and other

Mineral Fiber Blanket Thermalirregularities.

Insulation for Light FrameE. Sound Transmission Class of the

C. Where insulation must extend

Construction and Manufacturedassembly:STC______

higher then 8 feet,supplemen-

Housing F. Size of the insulationtary support can be provided to

Thickness__ Width__ Length__hold product in place until the

1.04 Submittalsinterior Þnish is applied.

Product Data:Submit manufac-2.03 Gypsum Board

turerÕs product literature,A. Refer to Section (09250) (09260)

samples and installation instruc-for detailed speciÞcations.

tions for speciÞed insulation.Select appropriate construction*  This standard is used solely to measure and

describe the properties of products in response

[B. Type:1/2Óthick,type ÒxÓgypsumto heat and ßame under controlled conditions.

1.05 Delivery, Storage and

panels.]These numerical ratings are not intended to

Handlingreßect hazards presented by this or any other

[C.Type:5/8Óthick,type ÒxÓgypsummaterial under actual Þre conditions.Values are

A. Protect insulation from physical

panels.] reported to the nearest Þre rating.

damage and from becoming wet,

soiled,or covered with ice or

snow.Comply with manufac-2.04 Metal Framing

turerÕs recommendations forA. Refer to Section (09250) (09260)

7

 

 

 

--------------------------------------- 10

 

Typical Wall Assemblies

a a a a a a a a a a

Single Wood Stud WallsSTC-45 (Figure 3)

aaa a aaaaa a aaa a a a a a aa

aaaaaaa a a a a a aaaaaaaaa a aaaaaaaaaaaaaaaa

STC-38 (Figure a a a a a1)aaa a a a a aa

a a a a aaaaa a a aa aaaaa

aa aaa aa a a aaaaaa a

aaaaaaaaa a a a a aaa aaaaaaa aa a aa aa aaaaaaa aa aa a

aaaa a a aaaaaaaaaaaaaaa a

aa a aaa a aa aaaa aaaaaa

aaa a a a a a a a aaa aaaaaaa aa aa

a a aaa a aaaa aa

a a aaaaa a aaa a aaa a a aa aaaaa aa aaaaaa

aaa a a aaaaaa aaa aa a a aaa

aaaaaa

a a aaaaa aaaaaaaaaaaaaaaa a a a a aaaaa a a a aa aaaaaaaaaaaaaaaa

aaaaaa a a aaaa a aaaa

aa aa a a aa a a a a a a a a a a aaaaaaaaaaaaa a

aa aa a a aa

aaaaaa a aaa a aaa aa a aaaa a aa aaaaaa

a a aaa a aaaaaaaaaaaaa

aaaa aa aaa aa a aa a a aaaa

aa aa aaaaa a aa aa aa aa a a a a aaaaa aaa

a a a a a aaaaaaaaaaa a a

aaa aaaaa a aa aa aaa a aaaaa aaa a aa aaaaaa

aa aa a aaaaaaa

a aaaaaa aaa aa aaaa

a aa aa a a aaaaaaaaaaaaaa aa a aaa a a a a aa a aa aaaaa a a aaaa

aaaaaaaaaa

a aa aaaa a a a a a a aa aaa aaa aa

a aa aa aaa aa

a aaaaa a aaa a a a a a a a a a a a aaaaa aaaaaa aaaaaaaa a a

a a a aa aaa a aa a

a aaaa a a a aa a a aaaaa aa aa aa a aaaaaa

a a a aaaa aaa

aaa a a aaaaa a a a aa aaaa

a a a a a aaa aaaaa

a a a aaa aa a aaa1

Single 2x4 wood studs,16" o.c.,double layer Ú2" Type X

aaa a a aa

1

gypsum board each side,one thickness (3Ú2"- 4") Þber glass

1

Single 2x4 wood studs,16" o.c.,single layer Ú2" gypsumbatt insulation.

1

board each side,one thickness (3Ú2"- 4") Þber glass batt

Fire rating - 1 hr.Balanced Finish

insulation.

Fire rating - NR.Single FinishVariation ConstructionFinish*STCFire Rating

1

3AÚ2" Type X GB Balanced391 hr.(est.)

Variation ConstructionFinish*STCFire RatingNo insulation

11

1AÚ2" GBSingle35Ú2 hr.3BStuds 24" o.c.Balanced391 hr.(est.)

1

No insulationÚ2" Type X GB

5No insulation

1BÚ8" Type X GBSingle341 hr.

No insulation

1C5Ú8" Type X GBSingle 38 (est.)1 hr.

1

(3Ú2"-4") Þber glass battSTC-50 (Figure a a a a a4)

aa aaa aa a a a

1DStuds 24" o.c.Single40 (est.)1 hr.aaaa

5aaaa a a aaaaaaaaaaa

Ú8" Type X GB

1a a aaaa a aaaaa a a aa

(3Ú2"-4") Þber glass batt

aaa a a aaaaa a a aa aaaaaa aa a

a a aaaaa aaa aaa aa aaa aaaaa

aa aa a aaaa aa aaa aa

STC-40 (Figure a a a a a a a a a a2)a a aaa a aa aaaaaaaaaaa a

aaa a aaaaa a aaa a a a a a a a a a a a a aaaaa a aaaa aa aaaa

aaaaaaa a a a a a aaaaaaaaa a aaaaaaaaaaaaaa a aa aa aaa aa a a aaaaa

a a a a aaaaaa a a aa aaaa aa a aa aa a a aaa a a a a aaaa aaa a aa a a aa a a

aaaaa a a a a aaa aaaaaaa a a a aa aa aaaaaaa a a a a aa aa aaa a a aa a a aaaaa

a a a aaa aaaaaaa aa aaa a aaa a aa a aaa a aa a a a a aa aaa aaaa a aaaaa aa aa aaaa

aaa a aaa a a a a a aaaa aa aa a a a a aaa aa aaaaa aaaaaa

a a a a aaaaa a a a aa aa aaaaaaaaaaaaaa a a a a a aaaaa a aaaaaaaa a a

a a a a a a a a a a a a aaaaaa a a aaaaaa aa a aaa a a aa aaa aa aaaaa

aaa a aaa a a a aaaa a a a aa a aaa a aaaaaa

a a aa aa aa aa a a a a aaaaaaaa aa aaa aa a aa aa a a a aaa a a

a a aa aa aaa a aaaaa aa a a aa aaaa aSingle 2x4 wood studs,16" o.c.,with resilient channel,a

a a a a a aa a aa aaaaa a a a a aaaaaa a aa a a5a aaa a

a aaaa asingle layer Ú8" Type X gypsum each side,one thicknessa a a a a a a a aaa a a a aaaaaa

a a a a a a a a a a aaaaa a aaa aa aaaaaaaa a a(31Ú2"- 4") Þber glass batt insulation.

a a a a a a aaaaa aa aa a a a aaaaaa

aaaaa a a a a a aaaFire rating - 1 hr.Single Finisha

1

Single 2x4 wood studs,16" o.c.,single layer Ú2" gypsumVariation ConstructionFinish*STCFire Rating

1Ú2" GB

board one side,double layer other side,one thickness4ASingle39NR

No insulation

(31Ú2"- 4") Þber glass batt insulation.5

4BÚ8" Type X GBSingle401 hr.

Fire rating - NRUnbalanced FinishNo insulation

1

4CÚ2" GBSingle47NR

1

Variation ConstructionFinish*STCFire Rating(3Ú2"-4") Þber glass batt

2A1Ú2" GBUnbal.38NR4DStuds 24" o.c.Single521 hr.

5

No insulationÚ8" Type X GB

1

5(3Ú2"-4") Þber glass batt

2BÚ8" Type X GBUnbal.38 (est.) 1 hr.(est.)

No insulation

2C5Ú8" Type X GBUnbal.41 1 hr.(est.)

1

(3Ú2"-4") Þber glass batt

* Single Ð one wall Þnish each side Unbalanced Ð one wall Þnish one side,two wall Þnishes other side Balanced Ð two wall Þnishes each side.

Partitions with STC ratings within 1-2 points of the listed criteria are acceptable given the anticipated tolerances in repeat tests.In fact,discrepancies between testing labs

of 1-2 dB on identical conÞgurations are not unusual. (Subjectively, the human ear would consider a 1-2 dB change as Ònon-discernibleÓat best, which is insigniÞcant.)

8

 

 

 

--------------------------------------- 11

 

Typical Wall Assemblies (continued)

STC-52 (Figure a a a a a a a a a a5)Staggered Wood Stud Walls

aaa a aaaaa a aaa a a a a a a a

aaaa a a aaaaa aaaaaaaaaaaaa a a aaaaa aaaaaaa

STC-50 (Figure 7)

a a a a aaaaaa a a aa aaaa aa a a a a a a a a a

aaaaa a a a a aaa aaaaaaa a a a a aaa aaaaa a aaa a a a aa aaaaa a aa aa aa

a a a aaa aaaaaaa aa aa aa a aaa a aa a aaa a aa aaa aaa a aaaaaaaaaaaa a

a a

aaa a aaa a a a a a aaaa aa a aa a aa a a a aaa aa a a a aaaaa

a a a a aaaaa a a a aa aa aaaaaaaaaaaaaaaa a a aa a a a aaa aaa aaaa a a

a

a a a a a a a a a a a a aaaaaa a aaa aaaa a aa a aaa a a a aa aaa aa a a a aaaaaa

aaa a aaa a a a aaaa a a a a aa aaa aaaaaaa a aa aaa

a a aa aa aa aa a a a a aaaaaa aaaa aa aaa aa a aa a a a a a a a a aaa a a aa aa a aa aa

aaaaaaa a

a a aa aa aaa a aaaaa aa a a aa aa aaa a aa a aa a a a a aaaaaa a a

a a a a a aa a aa aaaaa a a a aa aaaaa a aa a a a aaa a aaa a aa aa aa aaa

aaaa aa a a

a a a a a a a a aaa aa a aaa aaaaaa a a a aaa aa a a a aa aa aaaa

a a a a a a a a a a aaaaa a aa aaa aaaaaaaa a a a aaaa a aa a aaa aaaa

a a a a a a aaaaa aa aa a a a aaaaaa a a aaa aaa aaa

aaaaa a a a a a aaaa a a aaaa aaaaa a

a aa aaaa a aaaaa aa

Single 2x4 wood studs,16" o.c.,with resilient channel,aaa a aaa

1

single layer Ú2" gypsum board one side,double layer other

side,one thickness (31Ú2"- 4") Þber glass batt insulation.Staggered 2x4 wood studs,16" o.c.,2x6 top and bottom

1

plates,single layer Ú2" Type X gypsum board each side,two

Fire rating - NRUnbalanced Finish1

thicknesses (2Ú2") Þber glass batt insulation.

Variation ConstructionFinish*STCFire RatingFire rating - 1 hr.Single Finish

1

5AÚ2" GBUnbal.44NR

No insulationVariation ConstructionFinish*STCFire Rating

5

5BÚ8" Type X GBUnbal.48 (est.)1 hr.7A1Ú2" GBSingle39NR

No insulationNo insulation

5CStuds 24" o.c.Unbal.55NR7B45Ú8" Type X GBSingle31 hr.

1

Ú2" GBNo insulation

1

(3Ú2"-4") Þber glass batt1

7CÚ2" GBSingle49NR

One thickness of

1

(3Ú2"-4") Þber glass batt

STC-55 (est.) a a a a a a a a a a(Figure 6)7D5Ú8" Type X GBSingle51(est.)1 hr.

aaa a aaaaa a aaa a a a a a a aTwo thicknesses of

aaaaaaa a a a a a aaaaaaaaa a aaaaaaaaaaa aaa aa a a a a(21Ú2") Þber glass batt

a aaa a aa a a a aa

a a aaaa a aaa7EStuds 24" o.c.Single521 hr.(est.)a a aaa a aaa

aaaaa a a a a aaa aaaaaaa a a a a aaa aa aaaa a aaa a aaa a a1Ú2" Type X GB

a a a aaa aaaaaaa aa aa aa a aaa a aa a a aaa a a aaOne thickness ofaaa aaaa

aaa a aaa a a a a a aaaa aa aa a aa a a a aaaaa(3a1Ú2"-4") Þber glass batt

a a a a aaaaa a a a aa aa aaaaaaaaaaaaaaa a a aa aa

a a a a a a a a a a aa aaaaaa a aaa aaaa a a aa aaaaa aaa aa

aaa a aaa aa a aaa aaa a a a a aa aaaaaaa

aaaa a a a aa a aaa aaSTC-53 (Figure 8)a a aa aa aa aa a a a a aaaaaa aa aa aa aa aa a a a a a a a a

a a aa aa aaa a aaaaa aa a a aa aa a aaa aa aaaaa a aa aa aaa a a aaa

a a a a a aa a aa aaaaa a a a aa aaaaa a aa aa a a a aaa a aaaaaaaaaaaaa aaaa aa

a a a a a a a a aaa aa a aaa aaaaaaa a a a a aaaa a a a a aa a a a a aa a

a

a a a a a a a a a a aaaaa a aa aaa aaaaaaa a aa a a a aaa aaa a a a a aa aa a aaaa a a aaaa aaaa

a a a a a a aaaaa aa aa a a a aaaaaa a a aa aaaa aa a aa aa a a aaa a a aaaaaa

aaaaa a a a a a aaaa aaaaaaaaaaa a aa a aa aa aa

aaa a a aa aaa a aaa a aa a a aaaaa aaa aa

Single 2x4 wood studs,16" o.c.,with resilient channel,aa a aa a a a aaa aa a aaaa a aaaaa

1aaaa a a a aa a aaa aa

double layer Ú2" Type X gypsum board each side,one thick-aaa a aa aa aa aaaaa a

1aaa aa a aa aaa aaa aaa aaa a a aaa

ness (3Ú2"- 4") Þber glass batt insulation.aaaaa

a aaaa a aa a aaaa aaaaaa a aaaa

Fire rating - 1 hr.Balanced Finisha a aaa aaa aaaa aaaaaa aaa

a a aaaa aaaaaaaa aa a

a aa aaaa a aaaaa aa

Variation ConstructionFinish*STCFire Rating

aaa a aaa

1

6AÚ2" Type X GBBalanced521 hr

No insulation

Staggered 2x4 wood studs,24" o.c.,2x6 top and bottom

6BStuds 24" o.c.Balanced571 hr.(est.)

1plates single layer 1Ú2" gypsum board one side,double layer

Ú2" Type X GB

(31Ú2"-4") Þber glass batt1

other side,one thickness (3Ú2"- 4") Þber glass batt insulation.

Fire rating - NRUnbalanced Finish

Variation ConstructionFinish*STCFire Rating

1

8AÚ2" GBUnbal.47NR

No insulation

8BStuds 16" o.c.Unbal.51NR

1Ú2" GB

1

(3Ú2"-4") Þber glass batt

* Single Ð one wall Þnish each side Unbalanced Ð one wall Þnish one side,two wall Þnishes other side Balanced Ð two wall Þnishes each side.

Partitions with STC ratings within 1-2 points of the listed criteria are acceptable given the anticipated tolerances in repeat tests.In fact,discrepancies between testing labs

of 1-2 dB on identical conÞgurations are not unusual. (Subjectively, the human ear would consider a 1-2 dB change as Ònon-discernibleÓat best, which is insigniÞcant).

9

 

 

 

--------------------------------------- 12

 

Typical Wall Assemblies (continued)

STC-55 (Figure 9)STC-60 (Figure a a a a a11)

a a a aaaaaaaaaaaa a a a

aaa aaa aaaaaaa a a a aa aa aa aa aaaaaaaaaaaaaaaa

aaaaa

a a

aaaaa a a aaaa aaaaaaaaaaaaaaaaaaaa aaaaaaaaaaa a a a a a

a a a a a a aaaaa a aa aa a a a a a aaaaa aaaaaaaaaaaaaaaaaa aa a a aa a a aaa

a aa aa a a a a a a a aaaaa a aaaaa a a aa aaa a a aa aaa a a a a aaa aaa aaaaaaaaaaaaaaa a a a a aaaaa aa

a

a a a a aaa aaa aaaa a aaa a a aaa a a a a a a a a a a a aaaaaaaaaaaaaaa aa a a aa a a aaa aaa

a

aaaaaaaaaaaaa aaaaa a a a a a a aaa aa a aaaaaaaaaaaaaaaa aa aa a a a a aaaaa

aaaa a a a aa aa

aaaaa a a a a a aa aa aaa aa a aa a aaa a a aa a a aaaaaaa aaa aaaaaaaaaaa aaa a

a a a a a a aaa aaa aa

aaa a a a aa aa a a a a a aaa a aa a aaaaaaa a aaaaaaaaaaaa aa aaa a a a a aaaaa

aaaaa a a a aa aa aa aa aa aa aaaaa a aaaaaa a a a aa a a a a a aaa aaaaaaaaaaaaaaaaa a a

aa aaaaa

aaaaaaaa

aaaaa a aaa a a a a aa a aaa aa aaa aa aa a aaa a a a aaaaaaaaaaaaa aa aa aaa a a aaa

a aaaa aaaa a a aa aa a a aaaa a a a a a aa a aaa aaa a aaaa aaaaaaaaaaaaaa

a aaaaa aa a a aaaaaa

a a a a aaa a a a aaaaa aaaa a aa a a a aa a a a a aaaaaaaa aaaa aaaaaa aaa

a a a a aaaaaa aa a a aaaaaaaaa aa a aa aaaaaaaaaaaaaaaaa a a

a a a a a a aaaaaaa a a aaaa aaaaaa a a a a aaaa aaa aa aaaa

aaaaa a a a a a aaaaaa a aaaa

11

Staggered 2x4 wood studs,24" o.c.,double layer Ú2" Type X gypsumDouble 2x4 wood studs,16" o.c.,single layer Ú2" Type X

1

board each side,one thickness (3Ú2"- 4") Þber glass batt insulation.gypsum board one side,double layer other side,two thick-

nesses (31Ú2"- 4") Þber glass batt insulation.

Fire rating - 1 hr.(est.)Balanced Finish

Fire rating - 1 hr.Unbalanced Finish

Variation ConstructionFinish*STCFire Rating

1

9AÚ2" Type X GBBalanced521 hr.(est.)Variation ConstructionFinish*STCFire Rating

No insulation1

11AÚ2" GBUnbal.46NR

9BStuds 16" o.c.Balanced531 hr.(est.)No insulation

1

Ú2" Type X GB  5

(31Ú2"-4") Þber glass batt11BÚ8" Type X GBUnbal.521 hr.

No insulation

9CStuds 16" o.c.Balanced532 hr.1

511CÚ2" GBUnbal.56NR

Ú8" Type X GB

1One thickness of

(3Ú2"-4") Þber glass batt1

(3Ú2"-4") Þber glass batt

11DStuds 24" o.c.Unbal.64NR

1

Ú2" GB

Double Wood Stud WallsTwo thicknesses of

1

(3Ú2"-4") Þber glass batt

STC-57 (est.) a a a a a(Figure 10)

aa aaa aa a a a

aaaa a a aaaaa aaaaaa

a a a aSTC-63 (Figure a a a a a a a a a a12)

a a aaa a aaa

aaa a a a aaaaaaaaaaaaaaaaaaaaa

aaa a a aaaaa a aaa a

a a a a aaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

a a aaaaa aa a a a aaaaaaaa a

a aa a aa a aaaaaaaaaaaaaaaaaaaaa

aa aa a a aaaa aa a a aa a a aaa

aa aa a a aaaaaaaaaaaaaaaaaaaaaaa aa aaaa aa a

a a aaa a aa aaaaaaaaaaaaaaaaa

aaaa aa aaaaaaaaaaaaaaaaaaaaaaaaaaa

a a a a a a aaa aaa aaaaa a aa a a aaa aaaa

a a a a a aaaaaaaaaaaaaa a aaaa

aa aa a aa aaaaaaaaaaaaaaaaa

aa a a aaaaaaaaaaaaaaaaaaaaaaaaaaaaa

a aa aa a a aaaa aa aa a aaaaaaaaaaaa

aaaa a a a aaaaaaaaaaaaa aaaaa a aaaaa a aa

a aa aa aaa aaaaaaaaaaaaaaaa

a aa a aaaaaaaaaaaa a aaa a aa

a a a aa aaa a aa aa aaa a a a a aaaaa

a aaaaa a aaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaa aa a a aa

a a a a aa a aaaaaaaa aa aa a aaa aa

a aaaa aaaaaaaaaaaaaaaa aa aaa

a a a a a aaa aa aaaa aa aa aaa a a aaa

aaa a aaaaaaaaaaaaaaaaaaaaaaaaa

a a a aaa aa a aaaa aaaaa aa a a aaaaaa

a a a a a a aa aaaa a aaaaaaa

aaa a a aaa aaaaaa aaa

a a a a a a a a a a aaaaa a aaaa aaaaaa

aaa a a

a a aa a a aaaaa aa aa aa a aaaaaa

Double 2x4 wood studs,16" o.c.,single layer 1Ú2" Type X gypsumaaaaaaaaaaaaaa

1

board one side,two thicknesses (3Ú2"- 4") Þber glass batt insulation.

1

Double 2x4 wood studs,16" o.c.,double layer Ú2" Type X

Fire rating - 1 hr.Single Finish

1

gypsum board each side,two thicknesses (3Ú2"- 4") Þber

Variation ConstructionFinish*STCFire Ratingglass batt insulation.

10A1Ú2" GB,No insulation Single46NR

Fire rating - 1 hr.Balanced Finish

10B5Ú8" Type X GBSingle451 hr.

No insulationVariation ConstructionFinish*STCFire Rating

1

10CÚ2" GB.One thickness Single56NR12A1/2" Type X GB Balanced541 hr.

of (31Ú2"-4") Þber glass batt

No insulation

5

10DÚ8" Type X GBSingle 561 hr.

12B1Ú2" Type X GBBalanced641 hr.

One thickness of

(31Ú2"-4") Þber glass battOne thickness of1

(3Ú2"-4") Þber glass batt

10EStuds 24" o.c.,1Ú2" GB Single56 NR

12CStuds 24" o.c.Balanced65NR

One thickness of1Ú2" GB

(31Ú2- 4") Þber glass batt

One thickness of

11

10FStuds 24" o.c.,Ú2" GB Single 60NR(3Ú2"-4") Þber glass batt

Two thicknesses of

(31Ú2"-4") Þber glass batt

* Single Ð one wall Þnish each side Unbalanced Ð one wall Þnish one side,two wall Þnishes other side Balanced Ð two wall Þnishes each side.

Partitions with STC ratings within 1-2 points of the listed criteria are acceptable given the anticipated tolerances in repeat tests.In fact,discrepancies between testing labs

of 1-2 dB on identical conÞgurations are not unusual. (Subjectively, the human ear would consider a 1-2 dB change as Ònon-discernibleÓat best, which is insigniÞcant.)

10

 

 

 

--------------------------------------- 13

 

Typical Wall Assemblies (continued)

a a a a a a a a a a

Metal Stud WallsSTC-54 (Figure 15)

aaa a aaaaa a aaa a a a a a aa

aaaaaaa a a a a a aaaaaaaaa a aaaa aaaaa aa aaaa aa aa a

STC-45 (Figure a a a a a13)

a a a a aaaaaa a a aa aa aa aaaaa a aa a a aaa

aa aaa aa a a a

aaa aa aaaaaa a a aaa aaa aaaaaa aa

aaaa a a aaaaa a aaaa aaa aa aaa aa aaaaaa aaa a

aa aaaaa aa aa aaaaa a aaa aaaaa aaaa

a a aaaa a aaaaa a a a a aa aaaaa aaaaaa

aa a a a aaa aaa a aaa a a aa a aaaa aa aaa a aaaa a a aaaaa a aaa aa a a aaaaaa

aa a a aaaaa a a a aa aa aaaaaaaaaaa aaaa a a aa aa

a aa a aa a aaaa a aaaaa aa a a a a

aa a a a a a a a a aa aaa aaa a aaa a aaaa aa a aaaaa aaa aa

aa aa a a aaaa aa a a aa

aaa a aaa aa a aaa aaa aa aa aa a aaaaaa

aaaa aa aa a aaa a aa aaaaa

aaaaaaaaaaaaaaaaaaaa aaa aaa a aaa aa

a a a a a a a aaa a a aaa a a aaaa aaaaaaaaaaaaaaaaa

aaaaaaaaaaaaaa aa a a aa aa aaaaa a a aaa

aa aa a aaa a a a aaaa a

aaa aaaaaaaa aaaaaa aa aaa aaaaaa

a aa aa a a aaaaaa aaa a aa a a aa a a aaa aaaaaaaaa

aa a a a a aa aaaa a aaaaaaaaaaaaaa aaa

a aa a aaaa aa aa aaa aa

a aa a a a a a a a aaaaa a aaaaa aaaaaaaa a a

a aaaaa a aaa aa a a aa aaa a aa a

aa aa a a aaaaa aa aa aa a aaaaaa

a aaaa aa a a aaaa aaa

aaaa a aaaaa a a a aa aaaaa a a a a aaa aaaaa

a a a aaa aa a aaa1

2Ú2" metal studs (25 gauge),24" o.c.,double layer

aaa a a aa

113

Ú2" gypsum board each side,one thickness (2Ú2"-2Ú4") Þber

11

2Ú2" metal studs (25 gauge),24" o.c.,single layer Ú2" gypsumglass batt insulation.

13

board each side,one thickness (2Ú2"-2Ú4") Þber glass batt

Fire rating - NRBalanced Finish

insulation.

Fire rating - NRSingle FinishVariation ConstructionFinish*STCFire Rating

1

15AÚ2" Type X GB Balanced452 hr.

Variation ConstructionFinish*STCFire RatingNo insulation

15

13AÚ2" GB Single36NR15BÚ8" Type X GBBalanced482 hr.

No insulationNo insulation

55

13BÚ8" Type X GBSingle391 hr.15CÚ8" Type X GB Balanced572 hr.

13

No insulation(2Ú2"-2Ú4") Þber glass batt

13C5Ú8" Type X GBSingle471 hr.

13

(2Ú2"-2Ú4") Þber glass batt

STC-47 (Figure a a a a a16)

aa aaa aa a a a

aaaa a a aaaaa aaaa aa aaa a

STC-50 (Figure a a a a a14)

a a aaaa a aaaaa a a aa

aa aaa aa a a a

a a a a a a a aaaaaaaaaaaaaaaaaaaaaaa aaaaa a a aaaaa aaaaaa

aa aa a a aa a a a a aaaaaaaaaaaaaaaaaaaaa aaaa a aaa a aaa

a a a a a aaaaa a aaaaaaaaaa aaa a a aaaaa a a aaaaa a aaa a

a aa a a aa a a aaa aaa aaaaaaaaaaaaaaaaa aaa aa a aaaaa aa a a a a

aa aa aa a a a a aaaaaaaaaaaaaaa a aaa a a a a aaaaaa aa a aaa

a a a aaaaaaaaaaa aa aaaaaa a aaaa a aaa a aa aaaaa

a a aaa aaaaaaaaaaaaa a a a a aaaaaaaaaa a a a aa a aa a a a a aaaa aaa a

a aa a aaaaaaaaaaa a a aaaaaaaaaaaaaaa aa aaa a

a a aa aaaaaaaaaaaaaaaaa a a a aaaaaaaaa a aaaaa aa aa a a aaaa aa aa a a

aaa aaaaaa

a aa aa aaa aa a a aa aaaa a a aaaaaaaaaa

a a a a a aaa aaaaa

aa aa aaa a a

a a a aa aaa a a aaaaaaa aa aaa aa aaaaa aaaa aaa

aaaa a a a

a a a a aa a aaaaaa

aaa a aaa

a a a a a aaa aaa aaaaa a a

a a a aaa aa a aaa

35Ú8" metal studs (25 gauge),24" o.c.,single layer 1Ú2" Type X

aaa a a aa

1

gypsum board each side,one thickness (3Ú2"- 4") Þber glass

11

2Ú2" metal studs (25 gauge),24" o.c.,single layer Ú2" gypsum

batt insulation.

board each side,double layer other side,one thickness

Fire rating - 1 hr.Single Finish

13

(2Ú2"-2Ú4") Þber glass batt insulation.

Fire rating - NRUnbalanced FinishVariation ConstructionFinish*STCFire Rating

1

16AÚ2" GB Single39NR

Variation ConstructionFinish*STCFire RatingNo insulation

14A1Ú2" GB Unbal.39NR16B5Ú8" Type X GB Single391 hr.

No insulationNo insulation

55

14BÚ8" Type X GBUnbal.441 hr.16CÚ8" Type X GBSingle501 hr.

1

No insulation(3Ú2"-4") Þber glass batt.

5

14CÚ8" Type X GBUnbal.521 hr.

13

(2Ú2"-2Ú4") Þber glass batt.

* Single Ð one wall Þnish each side Unbalanced Ð one wall Þnish one side,two wall Þnishes other side Balanced Ð two wall Þnishes each side.

Partitions with STC ratings within 1-2 points of the listed criteria are acceptable given the anticipated tolerances in repeat tests.In fact,discrepancies between testing labs

of 1-2 dB on identical conÞgurations are not unusual. (Subjectively, the human ear would consider a 1-2 dB change as Ònon-discernibleÓat best, which is insigniÞcant).

11

 

 

 

--------------------------------------- 14

 

Typical Wall Assemblies (continued)

STC-52 (Figure a a a a a17)Exterior Walls

aa aaa aa a a a

a a a a a aaaaa a a aaaaa aaaaaaa a

STC-47 (Figure 19)

a a aaaa a aa aa aaa a aa a a a aa

a a a a a aaaaa a aaaaaaaa a a aaaaa a aaa a

a aa a a aa a a aaa aaa aaaaaaaaa a aaaaa aa a a a a

aa aa aa a a a a aaaaaaaaaaaaaaaa aa a aaa

aaaa a a a aa aa a aaa a aa aaaaaa

a aa a aa a aaa

a a a a a a aaa aaa aaaa aa a a aaa a a a a aaaa aaa a

a aaa a a a a aaaaaaa aa aaa a

aaaa aa a

aaaa a a a aa a aaa aaaaaaaaaaa aa aa a a aaaa aa aa a a

a aa a a aaa a a a aaaaaaaaaa aa aa aaa aa

a aaaaa aa a a aaaa aa a a aa aaa a aa aa

aaaa aa a a

a aaaaaa a aa a a aaaa aaaa

a aa aaaa

aaa a aa a a a a aaa aaaaa

a aaaaa a aaaa

a aa aaa aa aaaa

a aaaaa

aaa a aaa

aaa a a

51

3Ú8" metal studs (25 gauge),24" o.c.,single layer Ú2" gypsum

1

board one side,double layer other side,one thickness (3Ú2"-

51

4") Þber glass batt insulation.Exterior frame wall,Ú8"x10" redwood siding Ú2" sheathing,

1

2x4 studs,16" o.c.,resilient channel,Ú2" gypsum board,one

Fire rating - NRUnbalanced Finish1

thickness (3Ú2"- 4") Þber glass batt insulation.

Variation ConstructionFinish*STCFire RatingFire Rating - NR

1

17AÚ2" GB Unbal.42NR

No insulationVariation ConstructionSTCFire Rating

5

17BÚ8" Type X GBUnbal.471 hr.19ANo insulation43NR

No insulation

19BNo resilient channel39NR

17C5Ú8" Type X GBUnbal.551 hr.(31Ú2"-4") Þber glass batt

1

(3Ú2"-4") Þber glass batt

19CNo resilient channel37NR

No insulation

STC-56 (Figure a a a a a a a a a a18)

aaa a aaaaa a aaa a a a a a aa

STC-57 (Figure a a a a a20)

a a a a a a a aaaaaaaaaaaaaaaaaaaaa a a a a a aaaaaaaaa a aaaaaaaaaaaa

aa aa a a aa a a a aaaaaaaa a a a a a aaaaaaaaa a aaaaaaa aaa aaaaa aa a a a aaaaa a a aa aaaaaa

a a a a a aa aaa aaaaaa a a a a aaa aaaaaaa a a aa aaaa aa aa

a a a a aaaaaa a a aa aaaaaaa a a aa

a aa a a aa a a aaa aaaa a a aaa aaaaaaa aa aa a a a a a a a aaa

aaaaa a a a a aaa aaaaaaa aa a a aa aa aaa a aa aaaa a

aa aa aa a a a a aaaaaa a a aaa aaaaaaa aa aa aa a a aa a a a a a aa aaaa a aaa a a a a a aaaaa aaaaa

aaaa a a a aa aa a a a aaaaa a a a aa aa aaaaaaaaaaa

aaa a aaa a a aa aaaaa aaaa a a aa

a a a a a a aaa aaa aaa a a a a a a a a a a a aaaaa a aaaaa a aa

a a a a aaaaa a a a aa aaaaaaaaaaaaaa aaaa a

aaa a aaa a a a aaa aaaa a a aa aa a aaaaa

a a aa aa aa aa a a a a aaaaaa aa aaaaaa aaaaa aa a a aaaaaaaaaaaaa aaaaa a a aaaaa a a a a a aaaaaa a aaa aa

a a aa

a aa a a aaa a a aa a aa aa aaa a aaaaa aa aaaaaaaaaaa a aaaa a a aaa a aaaaaa

a a aa aa aa aa a a a a aaaaaa aaaaaa aa aaa aa a a a a aaa a a

a a a a a aa a aa aaaaa a a a aaa aaaa a aa aaa aa a aaaaaa

a a aa aa aaa a aaaaa a a a a a a a aaa a a a a aaaaaaaaaa aa a a aa aaaaaaaaa aaa

a a a a a a a a a a aaaaa a aa aa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa a aaaaaaa a a

a a a a a a aaaaa aa aa a a a aaaaaaaaaaaaa aaaa a a a aaaaaaaaaaaa

aaaaa a a a a a aaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaa a aa

a a aa a a aaaa a aa aa aa a aaaaaa

aaaaa a a a aa aaaa

35Ú8" metal studs (25 gauge),24" o.c.,double layer 1Ú2"Type X

1

gypsum board each side,one thickness (3Ú2"- 4") Þber glassExterior 7Ú8" stucco,1" woven mesh and no.15 felt paper

batt insulation.and,2x4 studs,16" o.c.,resilient channel,1Ú2" gypsum

1

Fire rating - 2 hrBalanced Finishboard,one thickness (3Ú2"- 4") Þber glass batt insulation.

Fire Rating - NR

Variation ConstructionFinish*STCFire Rating

1

18AÚ2" Type X GBBalanced502 hr.Variation ConstructionSTCFire Rating

No insulation

20ANo insulation49NR

5

18BÚ8" Type X GB  Balanced522 hr.

20BNo resilient channel46NR

No insulation1

(3Ú2"-4") Þber glass batt

18C5/8" Type X GBBalanced582 hr.

(31Ú2"-4") Þber glass batt

* Single Ð one wall Þnish each side Unbalanced Ð one wall Þnish one side,two wall Þnishes other side Balanced Ð two wall Þnishes each side.

Partitions with STC ratings within 1-2 points of the listed criteria are acceptable given the anticipated tolerances in repeat tests.In fact,discrepancies between testing labs

of 1-2 dB on identical conÞgurations are not unusual. (Subjectively, the human ear would consider a 1-2 dB change as Ònon-discernibleÓat best, which is insigniÞcant.)

12

 

 

 

--------------------------------------- 15

 

Typical Wall Assemblies (continued)

STC-58 (Figure 21)STC -39 (Figure 23)

a a a aaaaa

aaa a a a aaaaaaaa

a a a a aa a aaaaaaaaa

a aa a aa a aaaaaaaaaaaaa

aa aa a a aaaaaaaaaa

aaaa aa aaaaaaaa

a a a a a aaaaaaaaaaa

aa a a aaa

aa a a aaa

aaaa a a a a

aaaa aa a a

a aa a aaaaaaaaaa

a aaaaa a aaa a

a aaaaa a aaaa

a aaaa a

a aaaaa

aaa a a

aaa a a

1377

Exterior brick veneer,Ú2" air space,Ú4" insulative sheathing,Exterior Ú16"x10" hardwood lap siding,Ú16" foil faced foam

11

2x4 studs,16" o.c.,resilient channel,Ú2" gypsum board,onesheathing,2x6 studs,16" o.c.,Ú2" gypsum board,one thick-

thickness (31Ú2"- 4") Þber glass batt insulation.ness (51Ú2") Þber glass batt insulation.

Fire Rating - NRFire Rating - NR

Variation ConstructionSTCFire RatingVariation ConstructionSTCFire Rating

21ANo insulation54NR23ANo insulation38NR

21BNo resilient channel56NR23BWith resilient channel45NR

11

(3Ú2"-4") Þber glass batt(5Ú2") Þber glass batt

STC-40 (Figure 22)

a a a a

aaa a a aa

a a a a aaa a

a aa a aa a aaa

aa aa a a aa

aaaa aa a

a a a a a aaa

aa a a aaa

aaaa aa a a

a aa aaaa

a aaaaa a aaaa

a aaaaa

aaa a a

77

Exterior Ú16"x10" hardwood lap siding Ú16" foil faced foam

1

sheathing,2x4 studs,16" o.c.,Ú2" gypsum board,one thick-

1

ness (3Ú2"- 4") Þber glass batt insulation.

Fire Rating - NR

Variation ConstructionFinish*STCFire Rating

22ANo insulation36NR

* Single Ð one wall Þnish each side Unbalanced Ð one wall Þnish one side,two wall Þnishes other side Balanced Ð two wall Þnishes each side.

Partitions with STC ratings within 1-2 points of the listed criteria are acceptable given the anticipated tolerances in repeat tests.In fact,discrepancies between testing labs

of 1-2 dB on identical conÞgurations are not unusual. (Subjectively, the human ear would consider a 1-2 dB change as Ònon-discernibleÓat best, which is insigniÞcant).

13

 

 

 

--------------------------------------- 16

 

Typical Floor/Ceiling Assemblies

STC-53 IIC-73(Figure 25)STC-56 IIC-71(Figure 27)

a a a a a a a a a a

a a aa a a a a a a a a a a a a a a a a a a a a a a a a a a a a

a aaa aa a a a aaa a a aaa aaa aa a a a a a a aa

a aaa aa aa a a a aaa a aaaaa aa a aaaa aa aaaa aa a aa a a aaa a a aaa aaa a a aa aaa a

a aaaaa aaaaaa a aa aa aa a aaa aa a a aa aa aa aa

a a aaa a aa a aa aaa a a aaaaa a a aaa aaa a a a aaaa a aaa aa aaa aa aaa a a aaaa

a aa a aaa aa a a aa aa aa a aa aa a a aa aa a aaaa a aaa aaa

aa aaa a aaa a aaa a aaaaa a aaa aaaaa aa a aa aaaaa a a a aa aaa aa aaaaa aa

a aa a a aa aa a aaaa a aaa aa aa a a a a a aa aaa aa aa a a

a a aaa a aa aaa aaaa aa a aa aaa aaa aaaa aa aa a a a aa aa aaa a aaa a aa a a a aa

a a a a a a aa aaa aa aa a aa a aa a aaa a a a aaa aa

aaa aa a aaaaaaa aaa aa aaaa aa a aaa aaa aa a aaaa aa a aa a a a a aaa a a aaa aa a aa aa

a a aaaa aa aaaa a aa aa aaa a a aaaa aaaa aa aa aa a aaa aa aa aaa aaa

aaa aaaa aa a aa a aaaaaaaa aaaaa aaa aaa a a a a aaa aaa a

a aaaaaaa aaa aaaa aa aaa aa a a a aaaaaaaaa aa aaaa aa a aa a a aaaaa aaaaa aa a aaa aa aaaaaaaa aa aaaaa

aaaa a aaaaaaaaaa aaa aaaaa a a a aaaa a aaa aaaa aa

a aaaaa aaa a aa a aaaaaaaaaaaa aaaa aaaa a a a aaaa aaa aaa

a aaaa aaaa aaa a a aa a aa a aaaaaa a a a aaa aaa aa aaa a a a a aaa aa a a a aaa a a aaa aaa aaaa a aaaa aa

aaaaaaaa aaaaa a aa a aaa aa a aaa a aaaaa aaaaaa a aaa

a aa a aaa aa a a aa aa aa a a a aa a aaa aa a a aa aa aa aa

a aa a a aa aa a aaaa a aaa aa a a aaa a aa aa a aaaa a aaa aaa

a a a a a a aa aaa aa aa a a a a a a a a aa aaa aa aa a a

a a aa a aaa a a a aaa a a a a aa a aaa a a a aaa aa

aaa aaaa a a a a aaa a a aaa aa a aaaaaaa a a a aaaa a a aaaaaa

aaa a a aaa aa aaa a aaaa aa

Wood FloorSteel Joist Floor

Carpet and pad,3Ú8" particle board,5Ú8" plywood subßoor,Carpet and pad,3Ú4" T&G plywood subwood subßoor, steel

111

2x10 joists 16" o.c.,one thickness (3Ú2"- 4") Þber glass battjoists (7Ú4", 18 ga.) 24" o.c., one thickness (3Ú2"- 4") Þber

15

insulation,resilient channel,Ú2" Type X gypsum board.glass batt insulation, resilient channel,Ú8" gypsum board.

Fire Rating - 1 hr.Fire Rating - NR

Variation ConstructionIICSTCFire RatingVariation ConstructionIICSTCFire Rating

25ANo resilient channel 6042NR27ANo resilient channel 5743NR

No insulationNo insulation

1

25BÚ2" plywood ßoor7250NR

5

Ú8" plywood subßoor 

25CVinyl ßoor 4950NRSTC-51 IIC-78(Figure 28)

instead of carpet and pada a a a a a a a a a

a a a a a a a aa

a aaa aa a a a aaa a a aaa aaa a

a aa a aaa aa a a aa aa aa aa

a aaaaa aaaaaa a aaa

a aa a a aa aa a aaaa a aaa aaa

a aa a aaa aa a a aa aa aa aa

STC-58 IIC-74(Figure 26)a a a a a a aa aaa aa aa a a

a a a a a a a a a a a aa a a aa aa a aaaa a aaa aaa

a a a a a a a a a a a aa a aaa a a a aaa aa

a a aaaaa a aa a aa a a a aaaa a a aa aaa aaa a a a a a a a a aa aaa aa aa a a

a aa a aaa aa a a aa aa aa a a aaa aaaa a a a a aaa a a aaaaaa

a aaa aaaa aaa aaa aaa aa a aaaa aaa aaaa aa a a a aa a aaa a a a aaa aa

a aa a a aa aa a aaaa a aaa aa a aaaa a a a a aaaa aa aa

a a a a a a aa aaa aa aa a a a aaaa a aaa aa aaa aaa aaa aa aaa a aa aa aa aa aaaa a aaaaa a a a aa a aa a aaaa a aaa a aa aaaaaaa a a a aaaa a a aaaaaa

a aaa aaaa a a a aaaa aaaa a aaaaaa a aaa a aaaa a a aaa a aaaa aa

a a aa a aaa a a a aaa a a a aaaa a a a aaaa aaa aaa

a aaa a a a a a a aaaa aa aaa a aa aa aaaaaa aaa aa a

aaa aaaa a a a a aaa a a aaa aa a a aaa aa a a a aaa a a aaa aaa a

a aa aa a a aaaaa aaaaaa aaaa a aaaaaa aaaaa a aa

aaaa a aa aaaaaa a aa a aaaaa aaaaaa a aaa

a aaaaaaaa aaaaaaaaaa aa a a aaa aaaa a aaaa aaaaa aaaaaaaa aaaa aa aaa a a a aa a aaa aa a a aa aa aa aaaa aa

a aaaaaa aaa aa a aaa a aaa aaaaaaaaaaa aa aaaaa a aaa a aa a a aa aa a aaaa a aaa aaaaa

aaaaaaa aaa aaaaaa aaa aaa

aaaaaa aa aaaa aa aaa aaa a a a a a a a aa aaa aa aa a a

aaa a aaaa aa

aaaaaa aaaaaaa aaa a a aa a aaa a a a aaa aa

a aa a aaa aa a a aa aa aa a a aaaaaaa a a a aaaa a a aaaaaa

a aa a a aa aa a aaaa a aaa aa a aaa a aaaa aa

a a a a a a aa aaa aa aa a a

Plywood Floor

a a aa a aaa a a a aaa aa

aaa aaaa a a a a aaa a a aaa aa aCarpet and pad,5Ú8" plywood ßoor, 2" x 3" furring,1Ú2" sound

aaa a a aaa aa1

deadening board,Ú2" plywood subßoor, 2x8 wood joists,

15

one thickness (3Ú2"- 4") Þber glass batt insulation,Ú8" Type

Concrete Floor

15X gypsum board.

Carpet and pad, 1Ú2" lightweight concrete ßoor,Ú8"ply-

1

wood subßoor, 2x10 joists 16" o.c., one thickness (3Ú2"- 4")Fire Rating - NR

1

Þber glass batt insulation, resilient channel,Ú2" Type X gyp-

Variation ConstructionIICSTCFire Rating

sum board.

28AWith vinyl ßoor 4952NR

Fire Rating - 1 hr. est.instead of carpet

and pad

Variation ConstructionIICSTCFire Rating

26ANo resilient channel 5947NR

No insulation

26B2x8 joists,7453NR

5

1Ú8" lightweight concrete ßoor

26C2x8 joists,4750NR

Vinyl ßoor 

instead of carpet and pad

* Single Ð one wall Þnish each side Unbalanced Ð one wall Þnish one side,two wall Þnishes other side Balanced Ð two wall Þnishes each side.

Partitions with STC ratings within 1-2 points of the listed criteria are acceptable given the anticipated tolerances in repeat tests.In fact,discrepancies between testing labs

of 1-2 dB on identical conÞgurations are not unusual. (Subjectively, the human ear would consider a 1-2 dB change as Ònon-discernibleÓat best, which is insigniÞcant.)

14

 

 

 

--------------------------------------- 17

 

Recommended Construction Methods

for Controlling Sound

DoorsHollow core door, noSolid core door with

gaskets, 1/4Ó air gap at sillgaskets and drop closure

Stagger doors across hallways and use gasketing.

Avoid sliding doors in areas where sound controlApt. AApt. BApt. AApt. B

is desired.

Hall with hard floor & ceilingHall with carpet & acoustic ceiling

Use doors of solid wood or insulated cores wher-

Apt. CApt. DApt. CApt. D

ever privacy is an important consideration;hollow-

core doors will not be as effective.

POORBETTER

OpenSolid rubberRubber

metal stripstriptube

Apt. AApt. B

DOOR JAMB GASKETS

Hall with hard floor & ceiling

AutomaticLapTube gasketSweep

dropjointin sillstrip

Apt. D

Apt. C

BESTDOOR SILL CLOSURES

WindowsMovable windows

casement or

Minimize the size of windows facing noisy areas.1/8Ó Glassdouble hung1/4 Ó

Plate glass

Felt or rubber

Separate windows to reduce cross-talk.perim. gaskets

Arrange casement windows so sound is not

reßected into adjoining units.

SidingWoodBrickWood

studveneerstud

Make sure movable windows close tightly and arewallwall

weather-stripped.

POORFAIR

Use thick glass,insulating glass or storm windows to

help reduce sound transmission through windows.

Fixed windows7/32Ó Plate glass

7/16Ó 3-Ply1/4Ó Plate glass

Perim. acoustic

laminated glass

lining

Felt or rubberFelt or rubber

perim. gasketsperim. gaskets

Brick/masonryResil.

wallChannel

Brick/masonry

wall

GOODVERY GOOD

Dishwasher

Wiring

Wire each apartment as a unit;avoid penetrationFlexible loop

drapes in

of walls or ßoors between apartments.position

Caulk holes (made by wiring) that penetrate

connecting structures;use elastic,non-hardening

caulk or dry packing.Isolation

mounts

Connect vibrating equipment with ßexible wiring.

15

 

 

 

--------------------------------------- 18

 

Electrical Outlets

Switch or electrical outlet. Use quiet type light switches

throughout apts., particularly in party walls.

Cut holes neatly to reduce leaks.

Make sure outlets are airtight by using elastic,

non-hardening caulk before installing the plates.

DonÕt install electrical outlets back to back.

3Õ min.

DO

Discourage placement of TV sets against party walls by

providing TV antenna, outlets in non-party walls.

Avoid recessed back-to-back mounting of electrical outlets.

Electrical outletsAntenna outlets

DONÕT

Ceiling FixturesFloor assembly

Surface mount any ceiling Þxtures on resiliently

mounted gypsum ceilings.Wood baffle

Make sure openings around boxes are sealedLight fixture

Springisolated from

air tight.mountingceiling

DonÕt use recessed or Òhi-hatÓtype Þxtures with-

Suspended ceilingGlassCaulk edges

out boxing in the Þxture.

DO

Floor assembly

Wood baffle

Fluorescent lightSpringFluorescent light

mountingwith open grille

GlassSuspended ceiling

DO

Floor assembly

Light fixture

bridges across

ceiling and joist

Springthus ÒshortingÓ

mountingspring mount

Suspended ceiling

DONÕT

Electrical Distribution Panels

Install these panels on interior walls within apart-

ments and never on corridor or party walls.

16

 

 

 

--------------------------------------- 19

 

Plumbing

Design pipe runs with swing arms so expansion and

contraction can occur without binding,thus elimi-

nating noise.

Isolate piping from structures with resilient pads

and sleeves,then seal for air tightness.

Develop a well-planned layout to minimize the

noise of ßowing water.GOOD LAYOUT IS CHEAPERAIR CHAMBER

Use oversized pipes and reduced pressures to

Metal

slow the speed of ßowing water and reduce noise.hanger

Provide air chambers to eliminate water hammer

Pack withFiber glass pipe

due to abrupt stopping of ßowing water.fiber glassinsulation

Use quiet-action water closets that are isolated

from the structure on a ßoating ßoor.

Isolation

Pad

Caulk all openings made in walls,ßoors and fram-

ing for supply and drain lines.Seal air tight with flexible seal

Angle iron

bracket

Vibration

isolation

supports

Sound

absorbing

board walls

Appliances and Air Conditioners

Select quiet,high-quality appliances.

Use adequately-sized water piping and valves to

minimize whistling.

Select quiet air conditioners with balanced fans

and motors.

Select quiet external ballast on ßuorescent Þxtures.

Phones and Other Noise-Making Equipment

Install phones,doorbells,intercoms,etc.,on interior

walls only Ð never on party walls or corridor walls.

17

 

 

 

--------------------------------------- 20

 

Insulated Duct Systems

a

Outer metal wall

Use performed Þber glass ducts or Þber glass duct

aaa aaa aa

liners to quiet fan noise and the sounds of air rush-

Glass wool blanket

ing through the ducts.a aaaaa aa

See chart below for an acoustical comparison betweena a aa aaa aaInner metal wall

uninsulated (bare) ducts and various types of insulateda aaa

Acoustic lining

ducts.For more information on insulated duct systems

aaa a a

contact NAIMA and request a copy of publication

number:AH121,A Guide to Insulated Duct Systems.

Duct Noise Attenuation Loss (dB/Lf)

Sound Frequency

Description125 250 500 1000 2000 4000

Bare Sheet Metal1.1.1.1.1.1.1

No perceived noise reduction.

1

Wrapped Sheet Metal.2.2.2.2.2.2

No perceived noise reduction.

Lined Sheet Metal.3.7 1.9 5.3 4.8 2.3

(1Óthick)2

SigniÞcant perceived noise reduction.

Fiber Glass Air Duct.4 1.4 3.3 3.9 5.0 3.7

3

(1Óthick)

Very signiÞcant reduction.Perceived noise reduced to less than 1Ú2 original level.

1.Version 1.1,1978 ASHRAE Transactions,Vol 84,Part 1,p.122

2.ASHRAE HVAC Systems & Applications HandBook,1987,Ch.52

3.Noise Control Manual,O.C.6th Edition,1986

Medicine Cabinets

Gypsum Board

Fiber glass blanket

Separate or surface mount medicine cabinets or

install mirrors on party walls with medicine cabi-

Cabinet

nets on interior partitions.

Cabinet

DO -  Stagger

CabinetFiber glass blanket

Cabinet

DO - Surface Mounting

Avoid recessed, back-to-back mounting of cabinets in party walls

Cabinet

Cabinet

DONÕT

18

 

 

 

--------------------------------------- 21

 

Equipment Noise

Locate heating and cooling equipment far fromLiving roomBathBedroom

bedrooms.

Inquire about equipment noise levels before buying

and insist on quiet units.

Dining roomKitchenBedroom

Isolate equipment in rooms with a door to the

outside or use a gasketed,solid-core door whenBalcony

POOR

access is from building interior

Mount equipment so as to keep vibrations from

entering surrounding structures.

Living roomBathBedroom

Construct partitions separating living units from

equipment rooms with an STC of 50 or better

Dining roomKitchenBedroom

Wall BasesBalcony

BETTER

Install plates on sill sealers;run wall Þnish to ßoor

where possible and caulk airtight on both sides.

Living roomBathBedroom

Cracks in Floor

Seal all cracks in the subßoor airtight with caulking.Dining roomKitchenBedroom

Balcony

BEST

Ceiling

Grille

AcousticSupplyReturn

tile

Rubber

OutsidegasketAcoustic

ventÕllining

Staggered

Furnace andstud wall or

Solid-coreA/C unitmasonry walls

door

Mounting

VibrationplateFlexible

isolatorsconnections

Floor

19

 

 

 

--------------------------------------- 22

 

Glossary

Absorption  The ability of a material to absorbImpact Insulation Class (IIC)  A single number rat-

rather than reßect sound waves striking it by convert-ing developed by the Federal Housing Administration

ing sound energy to heat energy within the material.to estimate the impact sound isolation performance

of ßoor/ceiling systems.

Acoustics The science of sound, including its pro-

duction, transmission and effects.Noise Unwanted sound.

Airborne Sound Sound, produced by vibratingNoise Reduction Reducing the level of unwanted

sources that radiate sound directly into the air, whichsound by any of several means of acoustical treat-

is transmitted through air as a medium rather thanment.

through solids or the structure of the building.

Noise Reduction Coefficient A single number

Background Noise Normal sound always present inindex of the noise reducing efficiency of acoustical

a space created either by outdoor sounds such asmaterials. It is found by averaging the sound absorp-

street traffic or indoor sounds such as ventilatingtion coefficients at 250, 500, 1000 and 2000 cps.

noise, appliances, etc.

Sound A vibration in any elastic medium within the

Decibel  Logarithmic unit expressing the ratiofrequency range capable of producing the sensation

between a given sound being measured and a refer-of hearing.

ence point.

Sound Attenuation  Reduction of the energy or

Discontinuous Construction  Any of several construc-intensity of sound.

tion methods, such as the use of staggered studs, dou-

ble walls, or resilient mounting of surfaces, used toSound Transmission  The passage of sound

break the continuous paths through which sound maythrough a material construction or other medium.

be transmitted.Airborne Sound Transmission: Sound transmitted

when a surface is set into vibration by the alternating

Flanking Paths A wall or ßoor/ceiling constructionair pressures of incident sound waves.

that permits sound to be transmitted along its surface;

or any opening which permits the direct transmissionSound Transmission Class (STC) A single number

of sound through the air.rating for evaluating efficiency of constructions in iso-

lating airborne sound transmission. The higher the

Frequency The number of complete cycles of aSTC rating the more efficient the construction.

vibration performed in one second, measured in

cycles per second (cps) and expressed in Hertz (Hz).Transmission Loss The decrease or attenuation in

sound energy (expressed in decibels) of airborne

Hertz (Hz) A unit of frequency of a periodicsound as it passes through a building construction.

process equal to one cycle per second.

20

 

 

 

--------------------------------------- 23

 

Bibliography

CertainTeed Corp., Fire Resistance and Sound Control

Guide.Available from CertainTeed Corp. P.O. Box 860,

Valley Forge, Pennsylvania 19482.

Knauf Fiber Glass, The Sound Solution.

Available from Knauf Fiber Glass, One Knauf Drive,

Shelbyville, Indiana 46176.

Loney, W., Effect of Cavity Absorption on the Sound

Transmission Loss of Steel Stud Gypsum Wallboard

Partitions,The Journal of Acoustical Society of America,

Vol. 49, No.2, 1971.

Loney, W., Effect of Cavity Absorption and Multiple

Layers of Wallboard on the Sound Transmission Loss of

Steel Stud Gypsum Wallboard Partitions,The Journal of

Acoustical Society of America,Vol. 53, No. 6, 1973.

Halliwell. R. E. and Quirt, J. D., Controlling Interoffice

Sound Transmission Through a Suspended Ceiling,The

Journal of Acoustical Society of America,Vol.90,Sept.1991.

NAHB Research Foundation, Inc., Insulation

Manual/Home,Apartments -Second Edition.Available

from NAIMA, 44 Canal Center Plaza, Suite 310,Alexandria,

VA 22314.

Office of Noise Control, California Department of

Health Services, Catalog of STC and IIC Ratings for

Wall and Floor/Ceiling Assemblies,2151 Berkeley Way,

Berkeley, California 94704.

Owens Corning, Noise Control Design in Residential

Construction.1980.Available from Owens Corning, One

Owens Corning Parkway,Toledo, OH 43659.

Johns Manville, Sound Control.Available from Johns

Manville, PO Box 5108, Denver, Colorado 80217.

The American Institute of Architects, Architectural

Graphic Standards,Seventh Edition,ÒSound Isolation

Design Criteria Table.ÓRamsey/Sleeper, Reprinted by per-

mission of John Wiley & Sons, Inc.

U.S. Department of Commerce, NBC HandBook 119,

Quieting:A Practical Guide to Noise Control,July 1976.

Available from Superintendent of Documents, U.S.

Government Printing Office,Washington, DC 20002.

U.S. Department of Commerce, National Bureau of

Standards,Acoustical and Thermal Performance of

Exterior Residential Walls,Doors and Windows.NBS

Building Sciences 77, November 1975.Available from

Superintendent of Documents, U.S. Government Printing

Office,Washington, DC 20002.

21

 

 

 

--------------------------------------- 24

 

ABOUT NAIMA

NAIMA is a trade association of North American

manufacturers of Þber glass, rock wool, and slag

wool insulation products. NAIMAÕs role is to pro-

mote energy efficiency and environmental preserva-

tion through the use of Þber glass, rock wool, and

slag wool insulation products and to encourage safe

production and use of these insulation products.

NAIMA Building Insulation Committee:

CertainTeed Corporation, 800/233-8990

750 E. Swedesford Road, Valley Forge, PA 19482

Johns Manville, 800/654-3103

P.O. Box 5108, Denver, CO 80217

Knauf Fiber Glass, 800/825-4434

One Knauf Drive, Shelbyville, IN 46176

Owens Corning, 800/GET-PINK

One Owens Corning Parkway, Toledo, OH 43659

For additional information contact to:

NAIMA 

44 Canal Center Plaza

Suite 310

Alexandria, Virginia 22314

Tel: 703/684-0084

Fax: 703/684-0427

E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Website: http://www.naima.org

Printed on recycled paper.PUB # BI405  12/97

 

 TM

SEALECTION500

TM

QUIET-S-WALLSSYSTEM - INTERIOR SOUND INSULATION

Sheetrock, 5/8”

NOISE

TM

SEALECTION500

SPRAY FOAM INSULATION 

Today’s hotels, condos, homes and apartments

3 1/2” Thick

have a lot more to contend with than just noisy

neighbors. New technology presents building

2” x 4” Yellow Pine

designers with an even bigger challenge when iton 24” CRS

comes to noise prevention.

Sheetrock, 5/8” type ‘X’

Because of this, it is necessary to rethink the

original STC 30-34 standards. By raising the

Two, Floor Plates

transmission loss between rooms an additional2” x 4” Yellow PineSTC- 49*

REF 13 C WALL ASSEMBLY

20dB, residents can get the peace and quiet once

attained with the original STC 30-34 standard.

Current research shows that an STC rating of 50 is

a desirable noise level for condo type construction.TM

SEALECTION500

SPRAY FOAM INSULATION 

Because people’s noise perception doubles every3 1/2” Thick

10dB, it takes a 10dB reduction to make a building

50% quieter and a 20dB reduction to make it 75%Studs, 2” x 4” Yellow Pine

on 24” CRS

quieter.

Two, Sheetrock, 5/8” type ‘X’

The designer with peace and quiet in mind should

TM

use Sealection500 spray foam for quiet comfort

Common Plate, 2” x 6”

in any situation.Yellow Pine on 24” CRS

Floor & Wall interface

caulked using non hardeningSTC- 50*

INSIDE QUIET DESIGN

caulking. Each SideREF W8 A WALL ASSEMBLY

TM

SEALECTION500 Quiet Wall

With a STC rating of 50, our walls don’t talk.

Ceilings and walls were meant to absorb sound, not

TMSEALECTIONTM 500

make it. This is exactly what Sealection500 spray

SPRAY FOAM INSULATION 

3 1/2” Thick

foam does. Versatile enough to use in both standard

and nonstandard geometric designs like curved

TM

walls and odd-sized wall cavities, Sealection500Studs, 2” x 4” Yellow Pine

is quiet design built right in.

To achieve the highest level of quiet-quality design,

TMSheetrock, 5/8” type ‘X’

Sealection500 spray foam should be applied by

an Authorized Contractor in accordance with

Two, Floor Plates

Demilac’s InSEAL-Right Quality Assurance

2” x 4” Yellow Pine

with 1” gap

Program.

STC- 52*

REF SPECIAL 8A WALL ASSEMBLY

*Note: Accuracy of test is +/-1 STC as verified by an acoustic consultant. Results can be STC 50

 

 

 

--------------------------------------- 2

 

SOUND SCIENCE

TM

The millions of semi-rigid open cells in Sealection500 insulation work to absorb sound waves at varying frequencies,

making it possible to design cost effective walls and ceilings with a Sound Transmission Class (STC rating) of 50 or more.

TM

Houses, buildings, and rooms insulated with Sealection500 all enjoy the benefits of protection against unwanted noise!

KEEPING SOUND IN NOT OUT

A fairly quiet room has between 30-50dB of background noise. A home theatre boasts

of up to 100 dB, which means your walls

need a STC rating of 50 or more to giveSpray Foam 

the rest of your home a little peace and

Insulation Properties

quiet.

3

Density:0.47 - 0.5 lbs/ft

2

Tensile Strength:5.6 lbs/in

Typical wood stud construction using

fiberglass insulation and 5/8” drywall onClosed Cell Content:4%

both sides has an STC rating of 27-34. APotential Heat of Combustion: 8600 BTU/lbs maximum

100dB theatre system would produce an

TM

overwhelming 70 dB of sound in a typical wood stud construction room. But a wall built with Sealection500’s quiet-S-

TM

WallsSystem under the same sound conditions would produce a noise level of just 50dB, that’s 75% quieter.

TMTM

Quiet-S-WallsSystems using Sealection500 spray foam will have a better performance at high frequencies than at

very low ones. To isolate speech or TV sound, the actual perceived loss would be better than normal STC value at those

frequencies. However, to isolate a subwoofer, the loss may be less than the nominal STC value may indicate.

So go ahead and crank it up a notch, just

make sure your home theatre system

TM

has a Quiet-S-WallsSystem

of its own.5/8” Plywood Floor

2” x 12” Floor Joint No. 2

Yellow Pine on 24” CRS

TM

SEALECTION500

SPRAY FOAM INSULATION 

Sheetrock, 5/8” type ‘X’3 1/2” Thick Applied to Underside of Floor

STC- 50*

                 F 24 FLOOR ASSEMBLY

RC-1 Channels 25 GA (24” CRS)

Waver: While every attempt has been made to present, in this brochure, the proper and most accurate/available information, it should be recognized that it has been prepared for general information and

guidance only and thus, does not imply or intend a guarantee or warranty. To receive information concerning any of our specific polyurethane systems, please contact the representative in your area.

cCopyright December 2005  Demilec (USA) LLC. 

Any partial or total reproduction of this information without prior written consent is unauthorized.

 

 I Behind lhe ]oam= Gontlactor Ghronicle

Pnonlr: Rrcnano SprEss, OwNER AND PnrstDENT oF

INxovlrve lNsuLATroN SolunoNs, Lro

By Stephanie Marie Chizik

Richard Spiess' Innouatiue Insulations Solutions, Ltd, crew wonWhqt's the most

'Resid.ential 

first-place in the WaIl" category during the 2008rewording experience

Spray Foam Conference. For more information on this project -you've hod on on SPF iob?

Yannell Zero Net Energy Home - check out the SPFA Web site atThere have been several

www.sprayfoam.org.projects that have been

really cool and interesting.

How long hove you been involved in the SPF industry?Our green, high-profile

March of 2002 is when I put my deposit down on my firstprojects have been the best

rig. I was a Senior Tax Manager for Arthur Anderson with aand most-rewarding. They

Master of Accounting in tax. I was dabbling with friends inget a lot of media coverage

remodeling and things of that sort and we were looking to doand when we go in and do

a substantial remodel to our own house in Arlington Heights,our job right, it works out

Illinois. We used spray foam. The more I thought about itwell. The zero net energy

the more I thought it would be a good opportunity to own myhouse that won last year's [SPFAI award was pretty cool.

own business.

Where do you see yourself in ftve yeors

Whot wos your ftrst lob in the SPF indusrry?in relotion to the SPF world?

I picked up the rig over Memorial Day weekend and theControlled growth. I'm developing my people internally. I find

first job didn't come for about a month and a half later.that hiring people who have experience really usually doesn't pan

That was insulating a flat roof, spraying it with closed-cellout. They don't usually adhere to the high standards I have. I've

foam in Chicago. It was a mixed use: The first floor wasbeen developing someone, bringing him into the office, hoping

commercial and the second floor was going to be a couplethings get easier for me...working insane hours that I do.

apartments.

Everything and anything that could go wrong on that jobWhot mokes o perfect work doy ior you?

did. I remember very distinctly when we pulled up to the job IWhen everything in the field goes well and there are no issues

told my worker "we'll be picking up the check by two o'clock."I'm able to get my work done in the office.

It was three days later that we finished the work. That phrase -

"picking the check up by 2 o'clock" - has become pretty famousDo you hove ony heroes?

in my company.I don't necessarily have any heroes so to speak. When I was

growing up it was always my uncle - my father's brother - who

Whot's your fovorite port obout working in rhe SPF industry?was a person I looked up to and tried to emulate. That was Gustaf

I suppose it's that I find it challenging. It's very technical -Spiess who is deceased now. He was always a person I admired

the work - and it's very rewarding when we execute jobs andquite a bit for his even-keeled thought process. He would think

they're done very, very well and customers are happy. We havehis way through problems without getting too excited, keeping

a reputation for doing great work in Chicago. They always findhis cool. He had the most impact on me growing up.

people cheaper than us, but no one has the capability of the

sprayers nor executes as finely as we do.Do you hove ony hobbies?

I have three kids. The eldest is 13, the middle is nine, and the

Whot's your leost fqvorite port oboutyoungest is five. Their hobbies are mine.

working in the SPF industry?

Getting paid for the work we do. Chasing the money has becomeWhot mokes o perfect doy off for you?

a real problem.When I'm able to leave the cell phone on the charger for the

entire day, not have to worry about it, and spend a nice day with

Whofs the most chollenging experiencethe family.

you'Ye hod on on SPF iob?

Clearly the first one's always the hardest. You're learningWhere's your foYorite ploce to be?

by fire.Disnev World. 5F

54 SprayFoam o February 2009

 

 Innovative Insulation Solutions, Ltd

Union Pacific -Oil Recycling Tank

Union Pacific Railroad Yard Melrose Park, IL

Installer: Martin Gudinoand Oscar Espinoza 

Type of Job: 19,000 gallon Tank Insulation 

Square footage of Job: 2000 Square feet: sprayed/coated 

Equipment Used: Gusmer HF-1600 / Gap Pro Guns 

Number of people needed for the Job: Two man sp 

Number of days required by the Job: Three Days 

Special Requirements: Wind Screen and Fall Protection 

Foam and coatings used: GacoWestern 273 Roof Foam 

and GacoFlex A-30

Project Description:Union Pacific RR has a locomotive 

engine oil recycling initiative. Union Pacific’s Chicago rail yard 

has hundreds of locomotives, which produce thousands of 

gallons of used oil annually. Union Pacific collects the used oil, 

treats the oil to remove water, and then sell the treated used 

oil to recyclers. The recycling process always came to a stop 

during the winter. Union Pacific RR decided to insulate the 

19,000-gallon oil collection tank with SPF, so the combination 

of the SPF and the heater they installed will permit the oil 

recycling to continue year around. 

Benefits of using Foam:SPF insulation was chosen to 

insulate the tank, since it was the only way to insulate the tank 

in an effective manner. No other method would achieve their 

goal of allowing the oil recycling process to continue through 

the winter. The SPF was able to conform to all the unusual and 

irregular surfaces of the tank. We were also able to insulate 

the tank in a very short period of time -sprayed and based 

coated in one day -two more days for the topcoats. 

Industry Excellence AwardsIndustry Excellence AwardsIndustry Excellence AwardsIndustry Excellence Awards

Category:  Tanks and Vessels

 

 

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