
Most homeowners think the black streaks on their roof or the green film on their siding is just “dirt.” It’s not. It’s organic growth — algae, mold, mildew, and lichen — and it is actively breaking down your home’s exterior surfaces.

Those black streaks are typically Gloeocapsa magma, a type of algae that feeds on the limestone filler in asphalt shingles. As it spreads:
Lichen and moss are even worse. They root into the shingle surface and can lift or crack shingles, leading to leaks and costly repairs.

On siding, organic growth:
Left untreated, this can mean repainting or replacing siding much sooner than necessary.

Unlike pressure washing, soft washing uses low pressure combined with specialized cleaning solutions to safely eliminate organic growth at the root.
Soft washing:
High pressure can void roof warranties and strip shingle granules. Soft washing cleans safely while preserving the integrity of your home.

Routine soft washing is not just cosmetic — it’s preventative maintenance.
By removing organic growth:
For homeowners here in upstate New York, where moisture and seasonal changes accelerate organic growth, regular exterior maintenance makes a major difference.
To our valued customers,
Due to a significant shoulder injury that requires surgery and rehabilitation, I will be suspending operations at Supreme Clean Exterior Renewal and will not be accepting any new work for the remainder of the season.
As an owner-operated business, I am unable to safely perform the physical demands of exterior cleaning while I recover.
I want to sincerely thank everyone who has supported my business, trusted me with your homes, and referred me to family and friends. Your support has meant more than you know.
Thank you again for your understanding and support.
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