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.
Painting a rusted steel roof.
Start with a wire brush photo 1.
You can also use oil based alkyd paint but.
Access the rusted galvanized metal roof using an extension ladder.
No rust remained after wire brushing it then top it with a water or oil based interior exterior rust preventative metal primer available for.
However badly rusted metal areas need more prep work and possibly a special primer.
Painting a rusted metal roof step 1.
How to prepare a rusted galvanized metal roof for painting step 1.
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.
Find either oil based or acrylic based paint at your local home improvement store.
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.
This will remove flaking rust and as much of the surface rust as.
Let the roof dry out thoroughly before applying noxyde coating.
Hand or power tool clean the rusty metal to remove any flaky rust and unsound paint.
Scrub the rust away using a stiff wire brush.
Wash the galvanized metal using a pressure washer.
Wait a full 24 hours for the roof to dry.
Apply a primer to.
Instructions on how to paint over rust.
Metal shed painting 1 apply a rust inhibiting primer with a brush.
Galvanized metal roofs are usually painted with acrylic based paint.
Some historical homes have terne metal roofs and these need to be painted with oil based paint.
If painting over lightly rusted or bare metal i e.
Once done you can paint over rust.
Scrub partially rusted metal areas with a wire brush to remove flakes and powdery surface rust then prime with a rust inhibitive primer.