Iic Rating Of Concrete Floor

Among current armstrong products installed with normal methods no special underlayments residential flooring with a foam interlayer laminates with a foam underlayment or acoustical fabric and linoleum consistently yields superior iic rating performance iic 50 or greater on concrete capped wooden floors.

Iic rating of concrete floor. Common guidelines to use when selecting the proper iic rating for your space. The iic ratings for basic wood structure with no resilient underlayment is around 40 iic to 45 iic. The iic ratings for basic concrete sub floor with no resilient underlayment is around 28 iic to 35 iic. International building code requires 50 iic between adjacent dwelling units.

On top of that the manufacture of the floor covering can use different materials. The quietwalk underlayment provides very high ratings such as iic of 71 and stc 66 as of mid 2018. Without the addition of sound isolation products the iic rating of basic wood structures will rate better than concrete structures because they are naturally more resilient. Iic 50 the least amount of impact sound transmission reduction considered effective.

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. The iic ratings for basic wood structure with no resilient underlayment is around 40 to 45 iic. Higher end units often expect iic ratings between 55 65. You can use an underlay with an iic rating of 70 to help alleviate the sound from transferring to the floor below you.

Further complicating matters is the effect that poor construction techniques may have on the field iic performance of your flooring assembly. This is usu ally because there is a pronounced dip in the test curve and the stc rating is heavily influenced by a measurement in one fre quency band. It inclused a 3 overlap and self adhesive strip to make installation even easier. Tiles will make more noise than hardwood and installation of the underlay is much easier with hardwood.

The lowest iic rated floors ceiling assemblies come in at around 25 and the highest rated systems can come in at 85 and up. The impact isolation class iic measured in decibels is the classification system used to determine sound impactfrom floor to ceiling in a structure. The standard requires a minimum laboratory stc rating of 50 for party walls and floor ceilings. Some occupants would be dissatisfied with this level of sound transmission.

This underlayment also has a pre attached vapor barrier to protect floors from moisture escaping concrete subfloors. The iic is not to be used to measure airborne sound penetration or absorption in walls.