I've had great luck with it patching rusty floors. POR-15 combined with fiberglass has made some very strong and very long-lasting patches for me since the '80s. I have had it peel off when I tried it over clean metal and had it fail on a master cylinder.

Plaza front passenger floor pan.jpgPlaza front passenger floor pan (2).jpgPlaza front passenger floor pan (3).jpg
Last edited by 71charger; 11/15/17 03:07 PM.