In fact power washing can leave streaks and make it look even worse.
Oxiclean aluminum siding.
I recently found out that aluminum siding oxidizes over time giving it a chalky appearance.
Oxiclean is not recommended for use on rust.
This is a cedar shake siding restoration job we did in rhode island.
If you go to the very end of the video you will see a completed photo when the wood is d.
If mold or mildew is the culprit spraying with a bleach solution will remove it.
Cleaning aluminum siding mildew.
There may be stains that are caused by mold and mildew.
Aluminum siding oxygen bleach such as oxiclean is safe to use on aluminum siding and effectively removes mold and mildew that can damage aluminum surfaces.
This oxidation can t be removed by power washing alone.
Oxygen is a major ingredient in oxiclean and an essential contributor to rust.
Spray this mixture on remaining spots.
To clean aluminum siding having mildew use a solution of one part bleach and four parts water.