Open the awnings. Use a medium- or hard-bristled brush to sweep away all dust, dirt and debris. Alternatively, use a shop vacuum to clear away all dust, dirt and debris.
Fill a spray bottle with white vinegar. Spray the vinegar directly onto the mold areas so those areas are saturated with vinegar. Allow to sit for 30 minutes.
Fill a bucket with water as hot as you can stand to touch. Use a medium- or hard-bristled brush to scrub the mold from the vinegar-soaked area. Continue to scrub until all mold is removed.
Allow to fully air dry before closing the awning.
Open the awnings. Use a medium- or hard-bristled brush to sweep away all dust, dirt and debris. Alternatively, use a shop vacuum to clear away all dust, dirt and debris.
Combine one part hydrogen peroxide to three parts warm water. Spray the awning in an inconspicuous area to test for color fastness. Allow the spray to dry for 15 minutes. If the color has not changed or faded, spray the moldy areas on the awning so they are saturated with hydrogen peroxide. If the color has changed, do not use this method. Allow the hydrogen peroxide to work into the mold for 15 minutes.
Fill a bucket with water as hot as you can stand to touch. Use a medium- or hard-bristled brush to scrub the mold from the hydrogen peroxide-soaked area. Continue to scrub until all mold is removed.
Allow to fully air dry before closing the awning.
