A-788 is an extremely hard, abrasion and impact resistant, two-part epoxy patching compound. It applies like putty to seal, fill, patch, or re-build aluminum, wood, concrete, fiberglass, and steel. It can be applied in or out of water to repair boat hulls, buoys, seawalls, docks, bridge abutments, and more. Splash Zone provides excellent protection against corrosion of metals and erosion and deterioration of concrete or wood. Recommended for patching and repairing damaged underwater surfaces. Not for use in potable water.