[Michael C Henry]

The fiberglass doesn't burn but it looks like it explodes when the pipe fails and all that throbbing -pulsing exhaust hitts it.I'm certain that the fiberglass of the footboxes wouldn't like it either.I still have the original exhaust in the attic above the garage as proof.I thought that the short lengths that my replacement exhaust were in lent it"s self to ceramic coating inside and out.and was the best choice.Heat is still there .Not as good as glass wrap but better than bare pipes .keeping air moving is enought to keep everything alive and comfortable.This is one of the concerns with my upcoming start up and cam breakin. Last time I let it run in place for extended time it burnt outline of engine and exhaust into lawn.I want one of those 4ft fans I saw at Home Depot.