Dynamat / Peal n Seal... yes or no
Was just looking at B-Quiet product samples...
B-Quiet Extreme says "is a sound dampening material that consists of rubberized asphalt coated with an aluminum top layer".
Same as Peal & Seal.
If it had issues w/melting and smell... why would they continue to use it?
The B-Quiet Ultimate, however, is pure butyl rubber.