Interlux InterProtect HS Primer. A versatile high solids, two part epoxy primer. Can be used above and below the waterline. Formulated with Microplates® to create an overlapping water barrier and prevent blistering. Also provides metal corrosion protection. Takes fewer coats to reach the desired film thickness. Meets the most restrictive VOC regulations. For use on aluminum, zinc-galvanized steel, cast iron, fiberglass, lead, steel and wood. Can be applied by spray, brush or roller. Satin finish. Gray. Gallon.