How To Seal A Rusty Metal Roof

Scrape any cracked or peeling paint from the roof before you repaint it or the new paint coating won t adhere properly.

How to seal a rusty metal roof.

Allow to dry for around eight hours then apply a second coat. Start with a wire brush photo 1. Use a zinc based primer on any areas where rust has been scrubbed or sanded away allowing it to dry before applying the protective roof coating or seal. Rust usually won t eat holes in an aluminum roof but it can discolor the metal.

If your roof is aluminum you shouldn t. On raw steel or rusted metal 3 to 4 coats are recommended because the metal is very porous. Apply the metal etching primer to the rusted galvanized metal roof using the roller. Everbrite will seal moisture out of rusted metal to help prevent further corrosion and will prevent rust stains.

Scrub partially rusted metal areas with a wire brush to remove flakes and powdery surface rust then prime with a rust inhibitive primer. Roll in a vertical motion working backward toward the extension ladder. Begin at the far side of the roof. Apply a solution of hydrogen peroxide vinegar and salt.

Wait three hours for the metal to dry. It can be used alone as a base coat on bare metal and will fix the rust while preserving the appearance. As it dries the acid of the vinegar will begin to corrode the surface of the metal and you will start to see rust appear. We then applied a semi gloss lacquer 3 coats interior application using a deft product.

This is a very important repair that could save your roof. The seal should last a couple of years with the bonus benefit of adding a layer of insulation to your mobile home. He recommended a product called penetrol normally used as a paint additive to improve flow and adhesion that also seals and stops rust. Stir thoroughly before applying it with a soft bristled roofing brush or paint roller.

However badly rusted metal areas need more prep work and possibly a special primer. On most metals two coats of everbrite clear protective coating are recommended. If any panel is extensively damaged replace it with a.