How To Paint A Metal Door That Has Rust
Purchase products that are labeled for metal and contain a zinc additive.
How to paint a metal door that has rust. If rust has partially or fully eaten through the metal i e. If the door has any gouges or dents either from the rust removal process or from previous damage fill them in with auto body filler putty smoothing it on to blend into the area. This also works great as metal fence paint or metal shed paint. Paint a metal door metal doors offer great benefits in security and weather resistance but to keep their surfaces welcoming and rust free you have to keep up with the painting.
Before you apply the primer and paint lightly sand the door with 400 grit sandpaper so the primer and paint will stick to it better. Before you can repaint the metal door you need a clean smooth surface go back over the door with sandpaper if needed to smooth out any rough or uneven areas. It is a good idea to seal the door to prevent a recurrence of rust by applying a rust sealant over the entire door surface. For spots that are very badly rusted or too delicate or detailed to clean thoroughly use a product like rust oleum rust reformer which soaks into the rust and changes it into a non rusting paintable surface photo 3.
The combination of outdoor moisture oxygen and carbon dioxide can damage an exterior metal door resulting in unsightly rusty patches. Be alert for discolored spots on your door. This signals rust development. Then apply 2 coats of the primer letting it dry after each coat.
Use a light gray primer for a light final paint color and a black primer for a darker final color. If the finish is free of cracking and peeling but simply needs a fresh coat the surface can be lightly sanded and cleaned and a fresh coat of glidden premium exterior paint can be applied. Preparing the door for a fresh coat of paint if your door has old paint on it what you do will depend on the condition of the paint. Once done you can paint.
Sometimes the rust eats. Pits or holes are visible in the piece or the piece has structurally weakened to the point that you can bend it by hand then paint. To paint a steel door you ll need exterior paint and an oil based primer designed specifically for metal. How to restore a rusted metal door.
Once done you can paint over rust.