Originally Posted by Tedd
Neat idea! But which insulation board? The foam stuff looks like it will dent or compress pretty easily resulting in a divot.
It will dent, even with the blue rigid 3000 PSI Styrofoam.
You need sheet metal in between. Minimum 16 ga, glued down with a contact cement that won't eat the Styrofoam.
Then glue the vinyl plank flooring right to it.
Use galvanized steel so you don't have to paint or worry about rust.
This is a Far better system
than using plywood
in a floor