For truly greasy or dirty aluminum siding or other outdoor pieces use a commercial degreaser in the power washer or sprayed on the surface to ensure it is as clean as possible and ready to take on primer and paint.
Paint aluminum sliding door frames.
Following the sequence illustrated above and beginning with the stationary panel paint one vertical edge then paint the top of the frame.
If they are metal steel sand lightly to get rid of any dust etc.
Sand the entire surface of the door frame with 80 to 120 grit sandpaper.
Next paint the opposite edge and bottom of the same panel.
Any good brand of paint for wood might be behr sherwin williams and others.
It shows how to use spray paint to paint an aluminium window frame the same as your doors.
Aluminum is also used for some bi fold closet and cabinet doors.
Now on the doors.
Although you can paint aluminum with nearly any paint exterior grade spray paint leaves an even smooth finish without.
Rustoleum makes good paints to cover metal surfaces.
For indoor projects clean the aluminum by hand with a scrub brush and a spray bottle of degreaser.
Secure old wrapping paper to the border of each piece of glass with painter s tape.
Sand until the aluminum is dull to promote paint adhesion.
Vacuum for cleaning sliding glass door tracks and window sills all purpose cleaner.
Painter s tape 2 3 inch thick tape is best for this project roll of kraft paper or wrapping paper.
Tape off the outside border of the door frame with more wrapping paper.
Affix the paper to a sanding block and sand in one direction.
Move the sliding section about an inch from the edge of the jamb and paint it in the same order.
Leave the sliding section open until the paint dries.
It recommends to use an etch primer first and be careful with the prep.
Cover the floor with an old sheet.
Aluminium windows and doors are painted using a special process called powder coating.
How to paint aluminum windows and door frames.
The first step of any painting project is cleaning.
The aluminium surface is prepared the paint applied electrically and then the section is placed in an oven to bake and finish.
Powder coating colours work just like regular paint.
Almost any colour can be achieved and can be mixed to achieve a specific tone.