Save Money on your heating and cooling cost with G.P. Insulation advanced expertise on environmentally friendly energy efficient building practices. We have trained certified professional through the State of Illinois energy program who can provide you with an energy rating on your building. For more information about these services check out our list of products or contact us for more details.

Quiet Comfort
A quiet home is relaxing and serene - with a peaceful aura of quality and solitude. Homeowners realize that unwanted noise affects comfort, concentration, and behavior. That is why it is crucial to insulate the ceilings, walls, and floors with a material that effectively controls sound.

And since noise from within the home can be equally disagreeable, it is a good idea to insulate interior walls and floors — so that several people or groups can simultaneously enjoy different activities (such as watching TV, reading, and using the computer). Controlling noise is clearly important, but how can a homeowner or builder know which insulation is best at keeping a home quiet?

Tested
The best way to determine effectiveness is to conduct reliable, scientific tests. Sound Transmission Class (STC) is a laboratory measurement used to study the resistance of a wall, ceiling, or floor to the passage of sound. The higher the STC number, the more sound is deadened.

The Winner
Testing shows that Foam/Cellulose design quiets a home better than fiberglass or spray foam. This is due to the porosity of the two materials in separate layers. We have found that the two materials complement each other in ways not previously tested.

Custom Fit Every Time
Different installation methods dramatically affect how well noise is controlled. Fiberglass batts leave gaps and voids since they are cut and patched to fit the countless variations throughout a home. Open Cell Spray Polyurethane Foam Insulation and Cellulose together completely fills the spaces in walls and ceilings. This application helps to reduce the sound transmittance because it is sprayed in and provides a custom fit around wiring, plumbing, and other obstacles. A Real Improvement For Every Home Spray Foam Insulation and Cellulose together will help keep your home quiet and energy effect. This results in a quitter more comfortable environment.

Ideal For Multifamily & Commercial Use
In situations where sound control is even more critical, Spray Polyurethane Foam Insulation and Cellulose has proven extremely effective.

STC Rating	Description of Performance
30 35	Loud speech understood fairly well Loud speech audible but unintelligible
42 45	Loud speech audible as a murmur Must strain to hear loud speech
48 50	Loud speech audible as a murmur Must strain to hear loud speech

Material	Performance
Open Cell Foam Insulation	Sound Transmission Class (STC) 39
Closed Cell Foam Insulation	Sound Transmission Class (STC) 37
Cellulose Insulation	Sound Transmission Class (STC) 49
Fiber Glass Insulation	Sound Transmission Class (STC) 39
Empty Walls	Sound Transmission Class (STC) 33
Open Cell Foam/Cellulose Combination	Sound Transmission Class (STC) 51

---

Sources (1) “Noise Control Design Guide”, Owens-Corning Fiberglas Corp. (2) “Noise Control Design Guide”, Owens-Corning Fiberglas Corp. (3) Spray Polyurethane Foam Alliance.