Metal Prep Gallon

The Metal Prep Gallon by POR-15 is the marine maintenance workhorse that every serious boater and angler should have in their engine compartment. Rust and corrosion are relentless enemies on the water—whether you're running a freshwater lake, saltwater estuary, or coastal offshore—and they attack bare metal with remarkable speed once protective coatings are compromised. This gallon-sized surface preparation cleaner removes rust, scale, mill scale, and old paint down to bare metal, creating a chemically clean substrate ready for POR-15's legendary protective coatings or standard primers and topcoats.

Metal Prep Gallon works by converting and etching rust and oxidation into a stable, paint-ready surface without requiring mechanical grinding or media blasting—a critical advantage when working in tight engine bays, around fuel systems, or on delicate marine hardware. The formula penetrates surface contaminants and creates a uniform, slightly etched finish that promotes adhesion for topcoats, dramatically reducing the risk of rust creep and coating failure under wet conditions. At 9.25 lbs per gallon, the concentrate delivers substantial coverage for large restoration projects, small touch-ups, and routine maintenance on hulls, through-hull fittings, engine blocks, bilge systems, and structural steel.

Experienced anglers and commercial operators rely on Metal Prep Gallon to extend the life of expensive marine hardware, fuel tanks, and engine components exposed to constant moisture and salt spray. When paired with POR-15 topcoat or other marine-grade protective systems, this prep cleaner becomes the foundation of a corrosion-prevention strategy that actually works in harsh saltwater and brackish environments. Apply with brush, spray, or immersion methods; the gallon size makes it economical for fleet maintenance, fishing lodge operations, and boatyards managing multiple vessels.