If mold or mildew is the culprit spraying with a bleach solution will remove it.
Cleaning mold off aluminum siding.
Mold removal usually requires some scrubbing and the best tool to use is a stiff bristle natural fiber scrub brush avoid metal fiber brushes they can damage the siding.
Remove the mold as soon as you notice it to prevent it from spreading and keep in mind that removing mold from aluminum siding may require more.
There may be stains that are caused by mold and mildew.
The main types of siding are aluminum wood brick stucco and the most popular siding vinyl.
Mold can grow on aluminum siding when the area is exposed to water or humidity and receives a limited amount of sunlight.
Choose your cleaning solution.
While a pressure washer is a fast way to remove dirt it is not recommended for use on all siding types or for a light cleaning.
Cleaning aluminum siding mildew.
Scrub with moderate pressure being careful not to push too hard against the flexible vinyl which can break using a scrub brush on the end of a long pole will help you avoid the need to climb to the top of the ladder to.
Spray this mixture on remaining spots.
Mold is a fungus that attaches itself to surfaces and can be a health hazard.