Subfloor adhesive vs XPS insulation
I'm planning on gluing down my 1" XPS foam board straight to my prepped and painted metal bus floor, then gluing 23/32 Advantech tongue and grove subfloor straight to the foam. I got my hands on a combination of Liquid Nail Heavy Duty Interior/Exterior adhesive, DAP subfloor and deck adhesive(interior/exterior), and TiteBond Subfloor adhesive (interior/exterior). Anyone have a reason why this would be a bad combo? The DAP product has a note that says it's not for use with "rigid plastic". XPS doesn't qualify as a "rigid plastic" for some reason, does it? Any reason anyone else can think of for not using any of these products for this application? I'm only planning on doing this once....