Paint Rusty Metal Barn Roof

Treat any flash rust by rubbing paint thinner onto the surface.

Paint rusty metal barn roof.

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. Scrub the rust away using a stiff wire brush. To paint a rusty metal shed you ll need to sand away the rust apply a special primer then paint it.

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. Access the rusted galvanized metal roof using an extension ladder. Wash the galvanized metal using a pressure washer.

Insert the black tip on the power washer wand. Wash the metal roof using trisodium phosphate in water at a ratio of 1 cup tsp per 1 gallon water. Wait a full 24 hours for the roof to dry. Combine 1 1 2 cups tsp for every 5 gallons of hot water.

Let the roof dry out thoroughly before applying noxyde coating. Scrape rust from the roof using a wire. Apply a primer to. This will remove flaking rust and as much of the surface rust as.

Instructions on how to paint over rust. How to prepare a rusted galvanized metal roof for painting step 1. The black tip provides enough pressure to clean without stripping the existing paint. Hand or power tool clean the rusty metal to remove any flaky rust and unsound paint.