Marine Board – Withstands the harshest marine conditions. Manufactured for marine use, Interstate Plastics Marine Board HDPE (High-Density Polyethylene) is a superior alternative to wood at a very economical price. While resistant to salt water, a wide range of chemicals and UV exposure, unlike other alternatives, Marine Board doesn’t splinter, crack, delaminate, rot, swell or absorb water. … Continue reading HDPE Marine Board | Interstate Plastics