Paint Rusty Metal Barn Roof

Water blast clean the prepared surface to remove all remaining dust and contaminants leaving a clean dry surface.

Paint rusty metal barn roof.

Painting a rusted metal roof step 1. The black tip provides enough pressure to clean without stripping the existing paint. Scrub the rust away using a stiff wire brush. Insert the black tip on the power washer wand.

Access the rusted galvanized metal roof using an extension ladder. Treat any flash rust by rubbing paint thinner onto the surface. 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.

Dirt can increase rust so this way you start with a good foundation. Wash the galvanized metal using a pressure washer. Apply a primer to. How to prepare a rusted galvanized metal roof for painting step 1.

Wait a full 24 hours for the roof to dry. Hand or power tool clean the rusty metal to remove any flaky rust and unsound paint. Scrape rust from the roof using a wire. Instructions on how to paint over rust.

You can also use oil based alkyd paint but. To paint a rusty metal shed you ll need to sand away the rust apply a special primer then paint it. The first thing you ll need to do is wash your shed with warm soapy water. Begin with the roof and use the power washer with the tsp solution to thoroughly clean the pole barn in 8 foot by 8 foot sections.