About WOODLIFE® COPPERCOAT™ Protect and preserve below-ground outdoor wood with Rust-Oleum® Wolman™ WOODLIFE® COPPERCOAT™. This unique formula contains an insecticide and nearly double the fungicide of standard sealers or stains. It’s paintable and stainable. EPA-registered, insecticidal preservative prohibits termite damage, rot and decay. Inhibits surface growth of fungal organisms: mould, mildew and staining fungi. Paintable and stainable; imparts a transparent green colour that naturally fades over time.