Painting A Rusty Galvanized Metal Roof

How to prepare a rusted galvanized metal roof for painting step 1.

Painting a rusty galvanized metal roof.

Scrape rust from the roof using a wire. 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. If it s a newer roof the galvanizing can definitely cause you adhesion problems.

Hand or power tool clean the rusty metal to remove any flaky rust and unsound paint. After noxyde is applied. You can also use oil based alkyd paint but. A power washer may remove more of the rust for you.

All you have to do is simply apply the vinegar to a clean rag and then wipe down the galvanized surface. Wait a full 24 hours for the roof to dry. Then apply 2 coats of a water based enamel acrylic paint to bring out the color. 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. Paint over the primer with a water based metal roof paint that contains rust inhibitors. Water blast clean the prepared surface to remove all remaining dust and contaminants leaving a clean dry surface. 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. Wash the metal roof using trisodium phosphate in water at a ratio of 1 cup tsp per 1 gallon water. Choose a type of paint you may or may not need to prime the surface depending on the type of paint you choose. Instructions on how to paint over rust.

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.