Dynamat

I have been reading all the post on dynamat and I plan on using it but my question is: I live in Florida and during the summer we're talking mid 90's in temp. Will the dynamat start to smell or melt?

One post mentioned 85F with no problems but increase that by 10 degress. What do you guys think?

More like add 40° to 85°. With windows up on a hot day, your car will be well into the hundred degree mark. the spec sheet for the Dynamat extreme says it works best between 14-140° but will widstand between 65-300°+: http://www.dynamat.com/spec_dynamat_xtreme.htm
Check out their site for the other products and their specs.