Soft Wash Roof CleaningThose black streaks running down your roof are not dirt and they are not stains. They are a living algae called Gloeocapsa magma, and it feeds on the limestone filler in asphalt shingles. Left alone it spreads across the whole roof and works its way under the granules.
The wrong way to remove it is a pressure washer. High pressure blasts the protective granules off the shingle surface, and once those granules are gone the shingle is exposed to UV and fails years early. Plenty of roofs have been ruined by someone trying to clean them.
We soft wash instead. A cleaning solution is applied at low pressure, it kills the algae and the moss, and the roof rinses clean without a single granule being disturbed. This is the method the asphalt shingle industry itself recommends.
Signs You Need This
Black streaks running down the north or shaded slopes
Green moss growing along the shingle edges or in the valleys
Lichen showing up as raised grey or white crusty spots
Granules collecting in your gutters or at the downspout splash block
Neighbors with newer roofs that look noticeably cleaner than yours
A roof that looks patchy or two toned from the street
What's Included
Full soft wash of all accessible roof slopes
Algae, moss, and lichen treatment
Gutter exteriors rinsed while we are up there
Landscaping and beds pre-wet and rinsed after
Downspouts flushed of runoff
Low pressure only, no granule loss
Siding below the roofline rinsed of any overspray
Photos of the finished roof since you cannot see it from the ground
How It Works
Inspect The Roof
We check the slope, the shingle condition, and where the growth is worst, and note any loose or damaged shingles before we touch anything.
Cover The Ground
Landscaping, beds, and any sensitive plantings below the roofline get saturated with clean water first.
Soft Wash The Slopes
The solution is applied at low pressure across every affected slope and given time to kill the algae and moss all the way through.
Rinse And Photograph
Everything below gets rinsed down and we send you photos of the finished roof, since most of it is not visible from your yard.
Other Services We Offer
House Washing
Soft wash that lifts mold, mildew, and green growth off siding without damage.
Learn more→
Concrete Cleaning
Driveways, sidewalks, and patios brought back to their original color.
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Fence Cleaning
Vinyl and wood fencing cleaned back to a uniform, fresh finish.
Learn more→
Exterior Window Cleaning
Streak-free exterior glass, frames, and sills.
Learn more→
Frequently Asked Questions
Will roof cleaning void my shingle warranty?
Soft washing is the method asphalt shingle manufacturers recommend. Pressure washing a roof is what causes granule loss and warranty problems, and that is exactly what we do not do.
How long until the streaks come back?
Soft washing kills the algae rather than just knocking the surface layer off, so it takes far longer to return than it would after a pressure wash. Shaded roofs under heavy tree cover will regrow sooner than roofs in full sun.
Can you clean a metal or tile roof?
Yes. The approach changes with the material, so tell us what you have when you request a quote and we will match the method to the roof.
Do you walk on the roof?
Only when the pitch and condition make it safe and necessary. Most of the work is done from ladders and from the ground, which is safer for the roof and for us.
Will the runoff hurt my landscaping?
We saturate everything below the roofline with clean water before we start and rinse it again when we finish, so nothing sits on the plants.
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