Thanks for the lesson.. But if you put fiberglass on metal it can very easily be pulled right off the metal... Sorry YOU can't make me blieve that.. Under your carpet yes it will stay until it pop's off..... But with what they have out there today,, It's to easy to do it right,, Not bestest...
If your going to tell someone how to do it... Tell them the right way...You don't have the tool's to do it right,, Then buy them or bring it to someone that does.. My God !!!