How To Seal A Rusty Metal Roof

Start with a wire brush photo 1.

How to seal a rusty metal roof.

The seal should last a couple of years with the bonus benefit of adding a layer of insulation to your mobile home. Roll in a vertical motion working backward toward the extension ladder. Begin at the far side of the roof. 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. Allow to dry for around eight hours then apply a second coat. This is a very important repair that could save your roof. On raw steel or rusted metal 3 to 4 coats are recommended because the metal is very porous.

I have a 20 gauge cold rolled steel that has been cleaned w soap water and then we applied a solution of water acid to speed up the rusting process. Apply a solution of hydrogen peroxide vinegar and salt. Scrape any cracked or peeling paint from the roof before you repaint it or the new paint coating won t adhere properly. If your roof is aluminum you shouldn t.

Scrub partially rusted metal areas with a wire brush to remove flakes and powdery surface rust then prime with a rust inhibitive primer. He recommended a product called penetrol normally used as a paint additive to improve flow and adhesion that also seals and stops rust. It can be used alone as a base coat on bare metal and will fix the rust while preserving the appearance. You can buy rubber based roof coating from most major hardware stores.

If any panel is extensively damaged replace it with a. Stir thoroughly before applying it with a soft bristled roofing brush or paint roller. 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. Once done you can paint over rust.

Wait three hours for the metal to dry. On most metals two coats of everbrite clear protective coating are recommended. 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.