Painting A Rusted Steel Roof

If painting over lightly rusted or bare metal i e.

Painting a rusted steel roof.

Hand or power tool clean the rusty metal to remove any flaky rust and unsound paint. Start with a wire brush photo 1. Access the rusted galvanized metal roof using an extension ladder. Scrape rust from the roof using a wire.

Water blast clean the prepared surface to remove all remaining dust and contaminants leaving a clean dry surface. However badly rusted metal areas need more prep work and possibly a special primer. Wash the metal roof using trisodium phosphate in water at a ratio of 1 cup tsp per 1 gallon water. No rust remained after wire brushing it then top it with a water or oil based interior exterior rust preventative metal primer available for.

Scrub the rust away using a stiff wire brush. You can also use oil based alkyd paint but. Apply a primer to. Make sure you get into all the crevices around the surface of the shed.

Choose a paint that s right for your metal roof. To prep metal for paint adhesion you must first clean it with soap and water remove light rust with a wire brush sand it with fine grain sandpaper and then in most cases prime. Let the roof dry out thoroughly before applying noxyde coating. Scrub partially rusted metal areas with a wire brush to remove flakes and powdery surface rust then prime with a rust inhibitive primer.

Galvanized metal roofs are usually painted with acrylic based paint. Find either oil based or acrylic based paint at your local home improvement store. Metal shed painting 1 apply a rust inhibiting primer with a brush. Wash the galvanized metal using a pressure washer.

Some historical homes have terne metal roofs and these need to be painted with oil based paint. How to prepare a rusted galvanized metal roof for painting step 1. 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. This will remove flaking rust and as much of the surface rust as.

Wait a full 24 hours for the roof to dry.