I was just wondering if anyone has used anything from the HD or Lowes company's to "hard coat" their foam props? I'm going to be building some "stone" walls this year and want to protect them the best way I can, but not bust the bank either. I've used Drylock for my tombstones. It looks really good, but the foam can still be damaged. I don't want to get into resin if I can help it. Very expensive and smelly. I've heard that Hotwire Foam Factory has some stuff, but I have not tested it out. And it seems like its just some type of glue that maybe I can find the equivalent type of product at one of the home department stores. I guess I could always try Drylock and then a couple of coats of Polyurethane but I don't know what that will do to the foam. I'm just really looking for an easy way to make harden foam walls.