Simplifying IIC and What it Means for You (Condo Insider)
IIC is the Impact Rating for Flooring. The host for this show is Raelene Tenno. The guest is Brent Iwasaki.
Does your condo have complaints related to being able to hear noise such as being able to hear the footsteps or moving furniture from the unit above? IIC is the ‘Impact Insulation Class’ acoustic rating for the ability of a floor-ceiling assembly to block impact/structure-borne noise from transmitting to the space below or the unit below. A flooring product with a low IIC rating will cause that distracting noise to the unit below that leads to complaints to the Condo Management. The higher the IIC rating, the better the assembly is at blocking impact noises. The International Building Code requires many public structures to have an IIC rating of at least 50. Whether you’re in a residential or commercial space, strive for this number to achieve the most comfortable environment. Some assemblies, especially those with flooring underlayments, can reach an IIC rating in the 80s. The best way to improve a floor assembly’s IIC rating is by adding a easy installable flooring underlayment.
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