New NRC Testing Available for K-13 & SonaSpray “fc”
ASTM C 423
ICC has new NRC testing available for K-13 and SonaSpray “fc”! The Noise Reduction Coefficient or NRC represents the amount of sound energy absorbed upon striking a particular surface. This is an important measurement to consider when designing an open space that will have acoustical obstacles.
Absorptive materials such as K-13 and SonaSpray “fc” reduce the volume of noise reflected back into a space, the length of time they last, and the distance over which they travel. The amount of absorption in a room is generally indicated by the Reverberation Time (RT) measured within the space. Attaining a low RT is essential to reducing the room’s echo or ‘liveliness.’
