Iic Rating For Carpet

It all begins with how sound is generated and the medium it transfers through.

Iic rating for carpet. The iic and stc is conducted at a controlled laboratory. An iic and stc rating will generally be 5 points higher than. The impact insulation class iic rating is a measurement of sound transmission from the floor to a room beneath it. The f iic and f stc is conducted in the field where sound is not as controllable hence the 5 point difference.

The top layer of flooring is only the tip of the iceberg for flooring sound transmission. The preferred level of performance for stc and iic is 60 57 f iic. The higher the rating the less sound gets through. 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.

Carpet with an nrc rating of 40 50 is the most efficient absorptive material. I hope this information was helpful for you. The impact creates vibrations that travel through the flooring and produce sounds on the other side. Some condos prohibit hardwood flooring entirely to make sure noise transmission into lower units is not increased.

But when you compare products look beyond the number. The iic rating is the determined by using a standard tapping machine with five steel faced hammers to strike a test floor material generating sounds between 125 hz 4000 hz. An iic rating 50 means that the flooring material has minimal sound absorption capabilities. The iic rating of a condo unit floor above another condo unit should be 75 or more to match what is provided by carpet and reasonably thick carpet padding.

A f iic and f stc rating. The transmission of these sounds through floor ceiling assemblies such as those found in multi level homes and apartments will be inhibited by underlayments with higher iic and stc ratings. Vinyl cork and rubber have a fairly high nrc rating with hardwood bamboo tile and stone at the bottom of the scale for sound absorption. When evaluating flooring underlayment sound deadening and acoustical ratings are one of the things homeowners or hoa considers.

The main test done by flooring industry is the impact insulation class iic ad sound transmission class stc. The highest rating is iic rating 65 which includes cork flooring and carpet. The subfloor ceiling assembly and presence of an underlayment during testing impact the rating from one manufacturer to. More typical values fall between 35 and 55.

So no 1 4 inch cork is not adequate on concrete.