What are the acoustic properties of spray foam?
If you are looking for sound deadening, open cell foam is both better and more cost effective. As an effective air seal, FreedomSeal 500 eliminates the air gaps through which sound travels and is superior in controlling mid-range frequencies which include the most common sounds; the human voice, stereo music and plumbing noise. A lot of the sound waves are absorbed as they find their way through the foam.