Industry professionals can offer their customers the added value of sound control with cellulose insulation. It is widely used to help limit exterior noise intrusions as well as for limiting noise between rooms. Understanding how cellulose insulation can help control sound provides industry professionals with more added value to offer customers and can even expand their markets to business that require quieter building environments.
Noise Reduction Coefficient measures the build-up of noise within a space. A NRC number index rating is used to measure the sound absorption quality of a material. Cellulose Insulation products have an NRC rating that can range upwards of .80 or higher depending on the product, and the wall, floor or ceiling design where the material is installed. What this means is Cellulose Insulation can absorb 80% or more of the sound it comes into contact with.
Sound Transmission Class measures the sound transmission between spaces. A single number rating is used to measure a structure’s ability to impede sound transfer. The higher the STC rating, the more effectively a wall, floor or ceiling controls sound transmission. Noises can be heard through a wall with an STC rating of 30, but should much less audible through a wall with a rating of 60. Cellulose Insulation may be used, along with other sound control details such as resilient channel, staggered stud design, and multiple layers of gypsum board, to achieve STC ratings of 60 or more depending on the wall or partition assembly where the product is installed.
Progressive builders sell the added value of sound control provided by cellulose insulation as an upgrade between interior walls, in addition to the traditional benefits derived from exterior wall and attic installations. It’s just one more way consumers can benefit from the enhanced performance and value only cellulose insulation can provide.