Use long even strokes and load the brush with paint when you bridge wet areas to prevent noticeable brush marks.
How to paint a rusted metal door.
The first step is to clean off loose rust and flaking paint and then apply a rust inhibitive primer.
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.
Then apply 2 coats of the primer letting it dry after each coat.
Allow the primer to dry fully usually two to four hours.
Allow the paint to dry before.
A primer can help paint adhere to a rusted metal piece but you still must first remove as much loose rust as possible from the surface first.
However badly rusted metal areas need more prep work and possibly a special primer.
Step 3 apply a coat of rust inhibiting metal primer with a paintbrush.
You don t need to get down to bare metal.
Step 5 allow the first coat to dry and apply the second and final coat.
Use an oil based paint designed for application on metal for the finishing coat on the door.
If the paint deteriorates over time from the suns uv rays or sprinklers then it may begin to rust.
Rusted metal doors fall into three categories.
Wipe the door frame with a rag dipped in isopropyl alcohol to remove all sanding dust.
Apply an even coat of exterior paint that s designed for use on metal doors.
Maintaining a metal door is a very easy task and repainting gives you a chance to change the doors color if you had been thinking about doing so.
You don t need to get down to bare shiny metal just clean off the flakes and powdery surface rust that prevent paint from adhering.
Scrape off peeling paint and powdery flaking rust until the surface is mostly smooth.
If you re dealing with a lightly rusted surface you may just need to give it a quick scrub with a brush.
Use a paint roller for the larger areas and a paintbrush for smaller crevices and corners.