All Surface Enamel Oil Primer

Description

Secure a rugged, corrosion-resistant base layer for demanding architectural surfaces with Sherwin-Williams All Surface Enamel Oil Primer. This industrial-strength alkyd/oil-based undercoat is engineered to bond tightly to challenging interior and exterior substrates, providing an defense against moisture and environmental wear. Formulated with anti-corrosive properties, it penetrates raw iron, steel, and aluminum surfaces to arrest rust and prevent corrosion from bubbling through your finish. On exterior wood siding, shutters, and trim, it seals open grain structures to stop tough wood tannin bleed-through and sap discoloration. The smooth-leveling oil formula fills minor surface flaws and controls suction on porous concrete or brick, leaving a uniform, high-grip anchor layer. It is the premier choice for prepping gates, machinery, structural railings, and high-wear trim work before applying premium enamel topcoats.