Re: Deck Materials???
Couple of issues / problems with pink/blue polystyrene basement insulation board. Polystyrene foam melts with polyester resin and will not even bond well with epoxy. I made a few sample boards and it worked "ok" if you cut it into 6" x 6" squares, but laminate didn't last long when I jumped up and down on it. The core is really too soft . . . 1/2" core cell, pesnske, coosa or marine ply are much much better choices . . . 1/2" marine ply and polyester resin is the least expensive route and arguably the strongest most durable laminate.
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