Painting A Rusty Galvanized Metal Roof

Instructions on how to paint over rust.

Painting a rusty galvanized metal roof.

Link to product info on amazon first might be a good idea. If it s quite old and rusty any primer for metal followed by any outdoor paint designed for metal is probably okay although a rust converter affil. After you ve sanded away the rust apply 2 coats of a rust inhibiting primer to prevent rust building up underneath the paint. Wash the galvanized metal using a pressure washer.

Painted metal roofs come with a baked on factory finish and you can re coat these as well as paint bare metal roofing with acrylic latex paint. Wash the metal roof using trisodium phosphate in water at a ratio of 1 cup tsp per 1 gallon water. You can also use oil based alkyd paint but. Access the rusted galvanized metal roof using an extension ladder.

Scrape rust from the roof using a wire. Allow the first coat to dry completely before applying a second coat. After noxyde is applied. The acidity of the vinegar will react with the metal treating the surface to promote paint adhesion.

Paint over the primer with a water based metal roof paint that contains rust inhibitors. Wait for the roof to dry completely before proceeding. A power washer may remove more of the rust for you. Then apply 2 coats of a water based enamel acrylic paint to bring out the color.

How to prepare a rusted galvanized metal roof for painting step 1. You can wash it by hand using a sprayer attachment to a garden hose or a power washer. Water blast clean the prepared surface to remove all remaining dust and contaminants leaving a clean dry surface. If it s a newer roof the galvanizing can definitely cause you adhesion problems.

Wait a full 24 hours for the roof to dry.