You could visit a Roofing & Supply House (found in the YELLOW PAGES under ROOFING - SUPPLY), and ask for their $.02. If you're talking about Snow & Ice Shield, I've used enough of it but don't recall who makes it. I simply refer to it as Snow & Ice Shield.
My best to ya and hope this helps.
Jay J -Moderator
PS: Perhaps you need to be more specific as to what you're referring to ...