How Much Does Roof Soft Washing Cost in Northern Virginia?
By Pristine America Washing··Ashburn, VA
Why Your Roof Has Black Streaks
Those streaks are Gloeocapsa magma algae, extremely common on shaded roofs in humid Northern Virginia. Left alone, it spreads and can shorten shingle life.
Why We Soft Wash Roofs (Never Pressure Wash)
High pressure dislodges shingle granules and voids many warranties. We use under 100 PSI with a cleaning solution that kills the algae and rinses safely.
What Affects Roof Cleaning Cost
Roof size, pitch, number of stories, and how heavy the algae growth is all affect price.
How to Get an Accurate Quote
Call (571) 291-5206 for a free roof soft washing quote.
Frequently Asked Questions
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Serving Ashburn, Chantilly, Aldie, Brambleton, South Riding and across Northern Virginia.
Last updated July 9, 2026