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.

How to seal a rusty metal roof.

Rust usually won t eat holes in an aluminum roof but it can discolor the metal. Regardless of the coating used the coating protects the sealing materials and extends the life of the metal roof. Apply a thick layer of urethane roofing cement around. Instead use a heavy power washer or a light sand blaster to blast away all the loose flaking rust.

Allow to dry for around eight hours then apply a second coat. If any panel is extensively damaged replace it with a. On most metals two coats of everbrite clear protective coating are recommended. Everbrite will seal moisture out of rusted metal to help prevent further corrosion and will prevent rust stains.

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. Once the rust is scraped away and the area is rinsed cut two pieces of metal repair mesh at least 1 inch larger than the area to be patched. You can buy rubber based roof coating from most major hardware stores. The water or sand will also remove dirt mildew and flaking paint from the surface.

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. If a rusty roof exists a rust primer must be applied prior to the roof coating. Elastomeric roof coatings typically have a higher level of aesthetic appeal than an aluminum roof coating.