"MMC" wrote in message
g.com...
Was over at HF today and saw a stack of "anti-fatigue mats", pretty
reasonable at 9 bucks for 4 sections 25" x 25" each. Wonder how this would
do for insulation? Ice box, sound, hull, etc.

Would it absorb water? Styrofoam is excellent insulation and has very low
absorbtion. Foam rubber not so much.