interesting, i had planned on wrapping my exhaust so i hope that will help a little with the heat. i am not to worried about it. I have taken a torch to this stuff before, when I had to make a round section for a corner, and it took longer than i thought before it became malleable enough to form it. they do make thicker sections of dibond. or even alumilight. same stuff but the polycarbonate is waffle style in between the aluminum instead of a solid. I guess i will just have to wait and find out.