Foamboard for paint booth

It will only stay white till the first time you use a dark paint.

I have started using "contact" shelf paper to line my spray booth, for easy cleanup.  When the inside gets too much paint on it, I just pull the old contact paper off and put down new stuff. I doubt if foamcore would take many sessions of that.

Paper back foamboard would suffice for minor duty, but not heavy duty applications. Eventually the paper will get wet and the stability of the board will be compromised. There is a foamboard that is much more stable and rigid called (in my neck of the woods) Gatorboard. It has the same foam core, but is faced with .020 styrene. Costs almost as much as plywood, so I don't see any benefit, unless you need to pickup and store your booth.

I use a plywood frame and put white paper up. When it gets dirty, I replace it.

I go to an office supply store and get me 2 double folded display board bright white one side brown on back I use this to line my booth.                  ACESES5