Affix the paper to a sanding block and sand in one direction.
Paint aluminum sliding door frames.
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.
The first step of any painting project is cleaning.
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.
Sand until the aluminum is dull to promote paint adhesion.
It recommends to use an etch primer first and be careful with the prep.
Aluminium windows and doors are painted using a special process called powder coating.
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.
Sand the entire surface of the door frame with 80 to 120 grit sandpaper.
Then apply a good primer and then a couple of coats of the color of paint of your choice in an exterior paint.
If they are metal steel sand lightly to get rid of any dust etc.
Leave the sliding section open until the paint dries.
Spray a light even coat of spray primer over all the metal parts of the doorframe.
The aluminium surface is prepared the paint applied electrically and then the section is placed in an oven to bake and finish.
Although you can paint aluminum with nearly any paint exterior grade spray paint leaves an even smooth finish without.
Almost any colour can be achieved and can be mixed to achieve a specific tone.
For indoor projects clean the aluminum by hand with a scrub brush and a spray bottle of degreaser.
Next paint the opposite edge and bottom of the same panel.
Now on the doors.
Cover the floor with an old sheet.
Following the sequence illustrated above and beginning with the stationary panel paint one vertical edge then paint the top of the frame.
Secure old wrapping paper to the border of each piece of glass with painter s tape.
Rustoleum makes good paints to cover metal surfaces.
Tape off the outside border of the door frame with more wrapping paper.
Powder coating colours work just like regular paint.
Any good brand of paint for wood might be behr sherwin williams and others.