How to Paint an Aluminum Window Frame

An aluminum window frame is an insulating material for windows; it can save energy and lock in temperatures. But an aluminum window frame can be a bland part of your outer home decor. Painting your aluminum window frames can add a zesty splash of color that your house needs to stand out in the neighborhood.

Step 1 - Clean the Aluminum Window Frame

First you need to thoroughly clean the window frame with the soapy water and a clean cloth. You should also clean the windows themselves before this project.

Step 2 - Remove Stains

Next you need to remove all stains that might alter the color of the finished paint. Spray the entire aluminum window frame with a thin coat of lubricant and scrub the entire surface with the toothbrush. After scrubbing the entire surface, wipe the window frame with a clean cloth to remove any gunky residue that may remain from cleaning.

Step 3 - Tape the Window

Tape protects the window from excess paint, which results in an unprofessional look. You should tape the outer edges of the window with the painter's tape.

Step 4 - Prime the Aluminum Window Frame

You need to use metal primer according to the manufacturer's instructions, which should be somewhere on the can. Allow the primer to dry before you continue to the next step.

Step 5 - Paint the Window Frame

Open the paint and stir it for about a minute to even the color. Dip the small paintbrush into the paint. Scrape all excess paint off the paintbrush on the side of the bucket. Smoothly drag the paintbrush up and down the window frame for an even coat of paint. Let the paint dry. Reapply numerous coats of paint until the aluminum is completely colored, with no metal shining through. Make sure to allow each coat of paint to dry before you apply the next.

Step 6 - Remove the Tape

To remove the tape from the window, pull the tape off at an angle, away from the painted area. Make sure to pull the tape away from the paint, not toward it. Use the razor knife to remove any paint that may have gotten on the window, but be careful not to scratch the window.