Paint Rusty Metal Barn Roof

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

Paint rusty metal barn roof.

Insert the black tip on the power washer wand. Wait a full 24 hours for the roof to dry. Let the roof dry out thoroughly before applying noxyde coating. The black tip provides enough pressure to clean without stripping the existing paint.

Instructions on how to paint over rust. Hand or power tool clean the rusty metal to remove any flaky rust and unsound paint. 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. This will remove flaking rust and as much of the surface rust as.

Apply a primer to. Access the rusted galvanized metal roof using an extension ladder. Wash the galvanized metal using a pressure washer. 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. Combine 1 1 2 cups tsp for every 5 gallons of hot water. Painting a rusted metal roof step 1.

You can also use oil based alkyd paint but. Scrub the rust away using a stiff wire brush. Treat any flash rust by rubbing paint thinner onto the surface. Scrape rust from the roof using a wire.