Paint Rusty Metal Barn Roof

How to prepare a rusted galvanized metal roof for painting step 1.

Paint rusty metal barn roof.

The black tip provides enough pressure to clean without stripping the existing paint. Wait a full 24 hours for the roof to dry. 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. To paint a rusty metal shed you ll need to sand away the rust apply a special primer then paint it.

Combine 1 1 2 cups tsp for every 5 gallons of hot water. Access the rusted galvanized metal roof using an extension ladder. Scrub the rust away using a stiff wire brush. Scrape rust from the roof using a wire.

This will remove flaking rust and as much of the surface rust as. The first thing you ll need to do is wash your shed with warm soapy water. Dirt can increase rust so this way you start with a good foundation. Wash the metal roof using trisodium phosphate in water at a ratio of 1 cup tsp per 1 gallon water.

Insert the black tip on the power washer wand. Hand or power tool clean the rusty metal to remove any flaky rust and unsound paint. Wash the galvanized metal using a pressure washer. Painting a rusted metal roof step 1.

Treat any flash rust by rubbing paint thinner onto the surface. Water blast clean the prepared surface to remove all remaining dust and contaminants leaving a clean dry surface. Apply a primer to. Instructions on how to paint over rust.