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Cleaning Guide For Fiberglass And Aluminum Awnings

Solid awnings, such as those made from aluminum or fiberglass, are an important part of your home's exterior. They add decorative value as well as providing energy savings by shielding your home's interior from the sun. For these reasons, you want to keep the awning in good condition. The following guide can help you avoid some common issues:

General grime

Dust, pollen, and dirt will build up on the awning. Taking care of it at regular intervals can help you avoid some of the other cleaning issues below. During the warmer months, spray off the top of the awning as well as the underside once weekly, perhaps as part of your normal lawn and exterior care routine. During the colder months, sweep out the inside of the awning to remove debris, and use a broom to sweep off any collected snow or loose debris from the top of the awning as well. Once warmer weather arrives, wash the awning more thoroughly with hot water, a sponge, and diluted dish soap. Avoid using a harsh abrasive cleaner or brush since this can scratch the finish on the awning.


Algae and mildew can leave brown, black, gray, or green stains and streaks on the awning. It most commonly occurs on top of the awning, but in moist or humid locations it will sometimes form on the underside. Begin by washing the awning thoroughly with soapy water. Then, combine one part bleach with six parts water to create a diluted bleach solution. The bleach will kill the algae and mildew, as well as removing any stains. Apply the solution, wait 10 minutes, then scrub and rinse. Keep in mind bleach can kill plants, so cover any garden plants beneath the awning with a tarp as you clean. Follow up by watering the area thoroughly to dilute any bleach run-off so it is rendered harmless.

Rust or corrosion

Rust and corrosion are most likely to occur where hardware connects the awning, although aluminum awnings may sometimes develop discoloration. Using galvanized or stainless hardware prevents the problem in most cases. If you have rust and corrosion, remove the offending hardware and replace it with a rust-proof version. Use a chemical rust remover to get rid of the stains – just make sure the remover you choose is safe for your awning material. If the aluminum itself has developed rust or corrosion, buff it off with steel wool and then repaint the awning.

For more help, contact an awning repair company in your area, like Lockhart Gene & Son Canvas Awnings