3M Reinforced Polyurethane Foam, a lightweight and rot-resistant alternative to plywood for use in structural and semi-structural applications. These polyurethane foam boards with fiberglass reinforcement provide high strength in applications including marine, transportation and general construction, with a weight savings ranging from 30 to 60 percent versus plywood.
Available in five densities ranging from 15 pounds to 26 pounds per cubic foot, sold in 4-foot by 8-foot sheets and provides users with a perfectly straight, level board that has no risk of warping and is easy to work with. Unlike plywood, which can chip or pop loose during construction, 3M’s innovative foam can be easily shaped with tools and secured to substrates with screws. Additional advantages of reinforced