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How to Paint Window Frames

Painting interior and exterior window frames, along with all painting, begins with proper preparation. If
you want to know how to paint window frames and how to do it correctly, you will need to know how to
clean the window frames correctly. After cleaning, comes window frame repair and sanding. After all of
this, you will tape off the window frames and begin painting.

Painting Window Frame Summary

  1. Clean the window frame
  2. Repairing damage
  3. Sand the window frames
  4. Tape off the window frame
  5. Paint the window frame

How to Paint Exterior Window Frames

As mentioned previously, painting window frames begins with proper preparation. You will first have to
clean the window frames. After, comes repairing the frames. When you window frames are repaired is
when you can begin sanding. Finally, tape off the window frames and begin painting.

Cleaning the Exterior Window Frames

Use a dry clean cloth and wipe the window frames. After, you can use a product to get off any strong
build-up, such as dirt and grease. There is a good chance the outside of your home will have a buildup of
dirt, along with your window frames.
An example of a product you can use is Trisodium phosphate:

  • Trisodium phosphate (TSP) is a heavy-duty cleaner. Follow the directions on the container to use
    TSP correctly.

When your cleaning agent has done its job is when you can rinse off the window frames. A power
washer works great for this. Allow the window frames to dry off before you begin your repairs.

Repairing the Exterior Window Frames

If your home is weathered, you will most likely need to remove paint flakes off the window frames. You
can use a scraping tool for this. Furthermore, finish off this repair with some rough grit sandpaper. The
most common repair you will probably need to do with trim is fill gaps between the window frames and
walls. You can use caulking for doing this repair. Caulk the gaps and then use a soft 90-degree object to
scrap off the excess caulking. You can also use other products such as a wood filler. Wood filler works
great for small dents and holes in the window frames.

Sanding the Exterior Window Frames

You can use a rough grit piece of sand paper for the areas with a lot of damage, such as the paint flake
areas. Then use a very fine grit sandpaper and give the window frames a light sanding. When you are
done sanding, wipe the frames off again. You can also use a vacuum.

Tape Off the Exterior Window Frames

Your exterior window frames should now be clean, repaired, and sanded. This is when you can tape off
the area around the frame with a good quality roll of painter’s tape.

Painting the Exterior Window Frame

Now that all your prep work is complete, you can begin painting your window frames trim. Begin by
giving the exterior window frames a coat of primer. The window frames throughout your house exterior
will most likely be narrow, so use a narrow brush.

  •  A brush around two inches wide works well for all window frames.
  • A good quality brush will give you a good quality window frame paint job.

Because the window frames will be narrow and small, begin painting by putting only a little paint on
your brush. After you got a good first coat of paint on your frames, let it dry and then give the window
frames a second coat of paint. Your home and how it looks is important. If you want a great paint job on
your exterior window frames, you should always use a painting professional.

Painting the Interior Window Frames

Painting the window frames inside you home will have a similar process to the outside. However, your
interior window frames will probably not need such a labor-intensive cleaning and repair process.