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Knowledge Base

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Answer: QuietRock would have little to no discernible affect on the IIC rating of a wood floor structure. Acoustically damped panels such as QuietRock which work (via the process referred to as "constrained layer damping"), provide an increase in the assemblies STC rating (Sound Transmission Class - a rating describing attenuation of airborne noise), but have been found to have little to no effect on increasing or affecting the IIC rating (IIC - Impact Insulation Class-a rating describing attenuation of impact or structurally transmitted noise).

QuietRock 510 and QuietRock 500 (Lowes), are identical in terms of performance and installation. The only difference is the QuietRock 500 is only available at participating Lowe's stores and is manufactured and sold in 4x8' size sheets only. QuietRock 510 is availible in 4x8, 4x10 and 4x12 panel sizes and is only available through regular building material dealers. To find a QuietRock dealer near you, please use the Find a QuietRock Dealer search engine at the top right of our QuietRock website pages.

No, none of our QuietRock products contain asbestos or any other any harmful agents. Just like standard drywall, care and appropriate protection (dust masks, eye protection, etc.), should be used when cutting and installing QuietRock. For more information on the materials used and contained in our QuietRock products, please refer to the MSDS (Materials Safety Data Sheet) located in our documentation center

Depending on the wall type and level of sound reduction (STC rating), you wish to achieve, QuietRock can be installed on one or both sides of a wall. In most cases and applications, installing QuietRock on only one side of a wall is all that is necessary to see noticeable and significant reductions in sound transmission through the wall (assuming the wall is well sealed with acoustical sealant-QuietSeal Pro and QuietPutty is used on the electrical outlet boxes and that the sound cannot “flank” or go around the wall). Refer to our QuietRock assembly guide for more information on performance differences using QuietRock on one or both sides of different wall types.

QuietRock is “STC rated and tested” to reduce the transmission of airborne noise through a wall or floor/ceiling assembly. Reducing sound echo inside a space is a different classification of products which are rated based on “NRC” (Noise Reduction Coefficient). QuietRock has not been tested for a noise reduction coefficient rating.