R Rating Sound Transmission Of Floor Coverings

Floor coverings with a high iic rating help to reduce impact sound transmissions to lower levels thus reducing or eliminating those bothersome noises.

R rating sound transmission of floor coverings.

Stc is widely used to rate interior partitions ceilings floors doors and windows. The higher the number the better the sound isolation. The floor covering industry considers the sound insulation very important in living areas such as multi family or single family dwellings. The higher the stc rating the better sound isolation the wall assembly is to achieve.

The third covers room to room transmission more appropriate for walls. The lowest iic rated floors ceiling assemblies come in at around 25 and the highest rated systems can come in at 85 and up. Sound absorption of floor coverings may be measured on two of those scales. This is called impact sound transmission.

Iic impact isolation class astm e492 e989 and stc sound transmission class astm e336 e413 are both tests for sound traveling through the total floor ceiling assembly from an upper living area to a lower living area. Sound transmission class stc is a rating of sound isolation of a building wall assembly. Sound transmission is rated using three different standards each defining a different way in which sound is transmitted. Impact sound complaints are common on floor ceiling assemblies that meet the bare minimum requirement of 50 decibels iic.