Painting A Rusty Galvanized Metal Roof

Wait a full 24 hours for the roof to dry.

Painting a rusty galvanized metal roof.

Wash the galvanized metal using a pressure washer. Scrape rust from the roof using a wire. Wash the metal roof using trisodium phosphate in water at a ratio of 1 cup tsp per 1 gallon water. 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.

Choose a type of paint you may or may not need to prime the surface depending on the type of paint you choose. Allow the first coat to dry completely before applying a second coat. Link to product info on amazon first might be a good idea. How to prepare a rusted galvanized metal roof for painting step 1.

Paint over the primer with a water based metal roof paint that contains rust inhibitors. You can also use oil based alkyd paint but. You can wash it by hand using a sprayer attachment to a garden hose or a power washer. Instructions on how to paint over rust.

Hand or power tool clean the rusty metal to remove any flaky rust and unsound paint. All you have to do is simply apply the vinegar to a clean rag and then wipe down the galvanized surface. The acidity of the vinegar will react with the metal treating the surface to promote paint adhesion. Water blast clean the prepared surface to remove all remaining dust and contaminants leaving a clean dry surface.

Then apply 2 coats of a water based enamel acrylic paint to bring out the color. 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. Access the rusted galvanized metal roof using an extension ladder. Wait for the roof to dry completely before proceeding.

After noxyde is applied.