Iic Stc Ratings For Floor Underlayment

Stc is a sound rating that attempts to measure the effectiveness of an assembly in addressing ambient or airborne sound.

Iic stc ratings for floor underlayment.

Measures a floor ceiling assembly s resistance to transmission of structure borne or impact noise such as footfall or a chair dragging on the floor. It will be hard for your downstairs neighbors to hear anything coming through their ceiling. As with the roberts felt however their first step foam is only suitable for laminate or engineered wood floors. Floor muffler ultraseal underlayment now for the cream of the crop the grand daddy of all sound reducing underlayments floor muffler.

All ratings are not equal as with any underlayment sound testing number that a company gives you each subfloor or floor assembly in your home. Of floor coverings in reducing impact sound transmission through concrete floors. On top of that the manufacture of the floor covering can use different materials. The test measures airborne sound transmission loss between 125 and 4000 hz iic.

The quietwalk underlayment provides very high ratings such as iic of 71 and stc 66 as of mid 2018. Laboratory sound test results for acousticork underlayment floor ceiling assemblies subfloor type acousticork wallboard floor sound ratings iic ratings product thickness ceiling covering iic stc astm e 2179 plywood w gypsum concrete r60 6mm yes ceramic tile 57 60 n a plywood w gypsum concrete r60 6mm yes parquet wood 54 59 n a. For engineered wood flooring installations the results depend on the type of materials used in the construction of the building along with the underlayment selected for the application. Iic values can range from as low as 25 for lightweight residential construction with no floor covering to over 65 for commercial construction with carpet.

More typical values fall between 35 and 55. Test iic of bare concrete substrate then add sound reduction membrane and flooring surface and test iic. This catalog of sound rated wall and the purpose of the indexing system is. For multi family structures some codes require an iic of 50 or more when tested in the laboratory or 45 or more when tested in the field.

Rates a partition s or material s ability to block airborne sound such as a television or people having a conversation. Results for both are compared at each of 21 frequencies and a change or delta is calculated. It works for noise absorption and damping as well with an stc rating of 66 and an iic rating of 68. Catalog of stc and iic ratings for wall and floor ceiling assemblies russell b.

Each iic or stc test report issued has a detailed description of the floor ceiling assembly used in that test. This underlayment is stc rated 73db and iic rated 74db.