Painting A Rusty Galvanized Metal Roof

Scrape rust from the roof using a wire.

Painting a rusty galvanized metal roof.

If it s a newer roof the galvanizing can definitely cause you adhesion problems. Wash the galvanized metal using a pressure washer. Water blast clean the prepared surface to remove all remaining dust and contaminants leaving a clean dry surface. 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.

Then apply 2 coats of a water based enamel acrylic paint to bring out the color. Wash the metal roof using trisodium phosphate in water at a ratio of 1 cup tsp per 1 gallon water. After you ve sanded away the rust apply 2 coats of a rust inhibiting primer to prevent rust building up underneath the paint. After noxyde is applied.

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. Hand or power tool clean the rusty metal to remove any flaky rust and unsound paint. You can wash it by hand using a sprayer attachment to a garden hose or a power washer. A power washer may remove more of the rust for you.

Instructions on how to paint over rust. The acidity of the vinegar will react with the metal treating the surface to promote paint adhesion. Allow the first coat to dry completely before applying a second coat. Link to product info on amazon first might be a good idea.

Access the rusted galvanized metal roof using an extension ladder. How to prepare a rusted galvanized metal roof for painting step 1. Wait a full 24 hours for the roof to dry. You can also use oil based alkyd paint but.

Wait for the roof to dry completely before proceeding.