NAC Products’ Super SAM 125 has achieved a 51 IIC and 54 STC on a bare 6" concrete slab in a recently conducted laboratory test. The self-adhering, sound-deadening sheet membrane can be used over 6" or 8" concrete slabs, with or without a sound rated ceiling assembly. Super SAM 125 also provides up to 3/8" of crack isolation protection and can function as waterproofing membrane when used in conjunction with SubSeal liquid waterproofing membrane.