Paint Rusty Metal Barn Roof

Scrape rust from the roof using a wire.

Paint rusty metal barn roof. Water blast clean the prepared surface to remove all remaining dust and contaminants leaving a clean dry surface. Combine 1 1 2 cups tsp for every 5 gallons of hot water. The black tip provides enough pressure to clean without stripping the existing paint. Instructions on how to paint over rust.

You can also use oil based alkyd paint but. Wash the metal roof using trisodium phosphate in water at a ratio of 1 cup tsp per 1 gallon water. Apply a primer to. 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.

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. Let the roof dry out thoroughly before applying noxyde coating. The first thing you ll need to do is wash your shed with warm soapy water. To paint a rusty metal shed you ll need to sand away the rust apply a special primer then paint it.

Painting a rusted metal roof step 1. Wait a full 24 hours for the roof to dry. Dirt can increase rust so this way you start with a good foundation. Treat any flash rust by rubbing paint thinner onto the surface.

Scrub the rust away using a stiff wire brush. Hand or power tool clean the rusty metal to remove any flaky rust and unsound paint. Wash the galvanized metal using a pressure washer. Insert the black tip on the power washer wand.