Painting A Rusted Steel Roof

This will remove flaking rust and as much of the surface rust as.

Painting a rusted steel roof.

Wash the galvanized metal using a pressure washer. Choose a paint that s right for your metal roof. Water blast clean the prepared surface to remove all remaining dust and contaminants leaving a clean dry surface. Wash the metal roof using trisodium phosphate in water at a ratio of 1 cup tsp per 1 gallon water.

Find either oil based or acrylic based paint at your local home improvement store. You can also use oil based alkyd paint but. Make sure you get into all the crevices around the surface of the shed. Some historical homes have terne metal roofs and these need to be painted with oil based paint.

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. Start with a wire brush photo 1. Access the rusted galvanized metal roof using an extension ladder. Scrub partially rusted metal areas with a wire brush to remove flakes and powdery surface rust then prime with a rust inhibitive primer.

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. However badly rusted metal areas need more prep work and possibly a special primer. If painting over lightly rusted or bare metal i e. Scrub the rust away using a stiff wire brush.

Apply a primer to. Instructions on how to paint over rust. Once done you can paint over rust. Let the roof dry out thoroughly before applying noxyde coating.

No rust remained after wire brushing it then top it with a water or oil based interior exterior rust preventative metal primer available for. Galvanized metal roofs are usually painted with acrylic based paint. Wait a full 24 hours for the roof to dry. Metal shed painting 1 apply a rust inhibiting primer with a brush.

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