All About DIY Spray Foam Insulation Kits ~ Closed-cell polyurethane spray foam has some pretty awesome qualities. It has a high R-value. It’s resistant to water, mold and insects. It expands into hard-to-reach nooks and crannies. Heck, it can even add structural support to walls and roofs.
Check out this project on RYOBI Nation - Built this rustic cooler box with some old pallet wood that I had. Only things I had to buy were 4 pieces of 1x6 and some 1 1/4 deck screws. I made the cooler box about an inch bigger on each side so that I can put insulation board and filled the cracks with spray in foam to increase the RS value of the cooler for the famous Texas summers.