I think I read an old thread regarding cabin insulation. Has anyone used this or have an opinion on this product? It seems like it would work pretty well and the price is right.

Here's the pix

Some of our forum members swear by this. I have a roll, but not installed yet. Often goes on after first dynamating. Then use this after. They each satisfy a different requirement.

I recall reading strong negative using the stuff you are asking about. Forgot what, could be something about elements that a car is exposed too

Photo is of a friends car that he is currently building. Dynamat and then Aircraft Spruce. Excellent installation. Doors yet to be done.

http://www.aircraftspruce.com/catalog/appages/insulator3.php

Yes, I wasn't sure if it will hold up or get brittle and break up over time. It's obviously designed to hold up to heat, but how long?

For what app would you want to spring for the slightly more expensive double foil stuff in the link?