Painting A Rusty Galvanized Metal Roof

Wash the galvanized metal using a pressure washer.

Painting a rusty galvanized metal roof.

Instructions on how to paint over rust. The acidity of the vinegar will react with the metal treating the surface to promote paint adhesion. After you ve sanded away the rust apply 2 coats of a rust inhibiting primer to prevent rust building up underneath the paint. 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.

Link to product info on amazon first might be a good idea. Choose a type of paint you may or may not need to prime the surface depending on the type of paint you choose. After noxyde is applied. Wait a full 24 hours for the roof to dry.

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. 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.

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. 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.

You can also use oil based alkyd paint but. How to prepare a rusted galvanized metal roof for painting step 1. Hand or power tool clean the rusty metal to remove any flaky rust and unsound paint. Water blast clean the prepared surface to remove all remaining dust and contaminants leaving a clean dry surface.

Wait for the roof to dry completely before proceeding.