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How to Paint Fiberglass Windows

Some people choose to paint their fiberglass windows when they desire to change the look instead of having them replaced, which would be far more expensive than painting.  Painting the windows is something you can easily do yourself by following a few simple steps.


  1. Put some warm water in a five-gallon bucket and add a mild dishwashing detergent of your choice.

  2. Dip a sponge in the soapy water and wash the windows. Make sure all the dirt and grime is completely removed from the surface. This should be done to ensure the paint adheres properly to the surface of the window.

  3. Use a towel dipped in clean water to rinse the soap from the window. You can use a water hose on the exterior side of the window.

  4. Use a towel to dry the surface of the window.

  5. Use a 220-grit sandpaper to roughen up the surface of the window. This should be done so the paint will adhere better.

  6. Use painter's tape to cover the surfaces surrounding the window.

  7. Use drop cloths to cover the floor.

  8. Use a paintbrush to apply a coat of latex primer on the window.

  9. Allow the primer at least three hours to dry.

  10. Use a clean paintbrush and apply a coat of latex paint of your choice over the primed window. 

  11. Allow approximately two hours for the paint to dry and apply a second coat if you can still see the primer underneath.

  12. Allow at least 24 hours for the paint to dry.

  13. Remove painter's tape from around the window.