Painting A Rusty Galvanized Metal Roof

Wash the metal roof using trisodium phosphate in water at a ratio of 1 cup tsp per 1 gallon water.

Painting a rusty galvanized metal roof. You can also use oil based alkyd paint but. Wash the galvanized metal using a pressure washer. Scrape rust from the roof using a wire. You can wash it by hand using a sprayer attachment to a garden hose or a power washer.

Link to product info on amazon first might be a good idea. If it s a newer roof the galvanizing can definitely cause you adhesion problems. 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.

Wait for the roof to dry completely before proceeding. After noxyde is applied. Access the rusted galvanized metal roof using an extension ladder. 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.

A power washer may remove more of the rust for you. 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. The acidity of the vinegar will react with the metal treating the surface to promote paint adhesion. Wait a full 24 hours for the roof to dry.

Allow the first coat to dry completely before applying a second coat. Paint over the primer with a water based metal roof paint that contains rust inhibitors. Choose a type of paint you may or may not need to prime the surface depending on the type of paint you choose. After you ve sanded away the rust apply 2 coats of a rust inhibiting primer to prevent rust building up underneath the paint.

Instructions on how to paint over rust.