The green film on siding is usually algae — often a species that thrives in shade, humidity and moisture. North- and east-facing walls, areas under trees and spots near downspouts get it first.
Algae is more than cosmetic. Left alone, it holds moisture against the surface and can spread to the roof, where its cousin leaves the black streaks you see on shingles across the neighborhood.
High-pressure washing is the wrong tool for siding: it can force water behind the panels, strip finishes and void warranties. Soft washing uses low pressure plus the right cleaning solutions to kill the algae at the root and rinse it away gently.
A professional soft wash also treats the surrounding areas so growth takes longer to return. We protect your plants and landscaping during the process, and we match the method to the surface — siding gets soft washing, concrete gets the pressure it needs.
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