Originally Posted by mattmxracer
its worth a shot and for 16 bucks and why does it stink?
Even Dynamat stinks like asphalt for the first few days.
It's the material used for the backing.
And while I'm not familiar with the specific product you asked about, I'd be inclined to agree with David.
The roofing industry, both commercial and consumer/retail, is FULL of products that are little more than some kind of industrial waste product, and someone looks at it and says "Hey, this is somewhat pliable and water repellent, let's market it as a roofing product!"
It might be okay on a roof, but it could pose a health risk in a situation with repeated confined space exposure.