Troy’s Blog

How to maintain and clean Aluminum Patio Covers & Pergola’s

Mar 24, 2019 | News

Aluminum Patio Cover Care & Maintenance.

Amerimax aluminum products are relatively easy to maintain.  Generally, the average rainfall is sufficient to keep its appearance clean.  If cleaning is required, we recommend the following steps.  Attention should be to areas under eaves, porches, awnings, and other overhangs with limited exposure to the natural cleansing effect of rainfall.


  • For moderate dirt – An occasional washing with clear water using a garden hose and soft-bristled brush is recommended (a long-handled, car-washing brush is ideal for this purpose).


  • For more substantial dirt accumulation – Wash in the manner indicated above, but use the following solution:


  • 1/3 cup detergent (e.g., Tide®)
  • 2/3 cup trisodium phosphate (e.g., Soilax®)
  • 1-gallon water


  • Mildew accumulation – Mildew can collect on surfaces of all types of building products and is often evident on surfaces that have not had properly maintained.  Normally, mildew will appear as black spots.  Mildew is easy to remove by using the following cleaning solution:


  • 1/3 cup detergent (e.g., Tide®)
  • 2/3 cup trisodium phosphate (e.g., Soilax®)
  • 1-quart sodium hypochlorite 5% solution (e.g. Clorox®)
  • 3 quarts water


  • Environmental black streaking.
  • Black streaking can also collect on the structure’s surface, which can be removed using Gutter Zap 4 and purchased online.  Gutter Zap 4


  • Caulking compounds, tar, etc. – Use mineral spirits in reasonable amounts. Apply directly to foreign substances. Rinse the area thoroughly with water immediately after cleaning.