1901 COPPERCOAT GREEN WOOD PRESERVATIVE | WOODLIFE COPPERCOAT Green wood preservative is a multi -purpose, EPA-registered, insecticidal wood preservative designed to protect exterior untreated or pressure-treated wood in below ground, ground contact, fresh water contact or above ground installations. COPPERCOAT prevents attack from termites and other wood boring insects while protecting against rot and decay. Its anti-wicking property resists moisture absorption through end cuts for greater control of dimensional warping, splitting and end-checking. Plus, its paintable/stainable formula makes this product an excellent preservative primer for wood roofing, millwork and trim.