I recent got my beardie in the mail and I noticed the insulation was 1" thick styrofoam. I have 4 pieces that are 12"x17". My question is, if I make just simple steps and ledges do I really have to grout it, or can I use textured spray paint and use multiple layers (5-6) of mod podge to seal it? I already built a wooden (maple) platform with a ramp, but thought I'd make use of the insulation.