How To Seal A Rusty Metal Roof

Apply the metal etching primer to the rusted galvanized metal roof using the roller.

How to seal a rusty metal roof.

Rust usually won t eat holes in an aluminum roof but it can discolor the metal. The seal should last a couple of years with the bonus benefit of adding a layer of insulation to your mobile home. 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. We then applied a semi gloss lacquer 3 coats interior application using a deft product.

If your roof is aluminum you shouldn t. You can buy rubber based roof coating from most major hardware stores. Once done you can paint over rust. It can be used alone as a base coat on bare metal and will fix the rust while preserving the appearance.

Allow to dry for around eight hours then apply a second coat. Begin at the far side of the roof. However badly rusted metal areas need more prep work and possibly a special primer. This is a very important repair that could save your roof.

Start with a wire brush photo 1. Apply a solution of hydrogen peroxide vinegar and salt. Stir thoroughly before applying it with a soft bristled roofing brush or paint roller. Wait three hours for the metal to dry.

Scrub partially rusted metal areas with a wire brush to remove flakes and powdery surface rust then prime with a rust inhibitive primer. If any panel is extensively damaged replace it with a. On most metals two coats of everbrite clear protective coating are recommended. 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.

Everbrite will seal moisture out of rusted metal to help prevent further corrosion and will prevent rust stains. He recommended a product called penetrol normally used as a paint additive to improve flow and adhesion that also seals and stops rust. On raw steel or rusted metal 3 to 4 coats are recommended because the metal is very porous.