Tracy, CA
Roof Cleaning in Tracy, CA
Grime Getterz cleans Tracy roofs with a soft wash: low pressure and a sodium-hypochlorite-based solution that kills the algae causing black streaks and moss. We never put high pressure on a roof: it strips shingle granules and cracks tile. Call (209) 624-6249 for a free written quote.
What is growing on Tracy roofs
The black streaks on shingle roofs are Gloeocapsa magma, an algae that feeds on the limestone filler in the shingles. Tracy's Tule fog winters give it months of damp mornings to spread, and it shows worst on north-facing slopes that stay shaded. Tile roofs in the newer stucco tracts collect the same algae plus a layer of Altamont dust and freeway fallout that dulls the tile color.
Soft wash only: no exceptions
High pressure destroys roofs. On composition shingles it strips the protective granules and shortens the roof's life. On the concrete tile common across Tracy's subdivisions, it cracks tiles and blasts out the finish. Our soft wash applies the treatment at little more than rain pressure, lets it kill the growth, and rinses gently. The roof gets clean and stays intact.
The treatment keeps working
A soft wash does not just remove the visible streaks; it kills the algae colony down to the roots. Heavy streaking often fades over the following weeks as the dead growth weathers off. Because the organism is dead rather than trimmed, results last far longer than any pressure-based cleaning could.
Questions We Actually Get
Do you walk on tile roofs?
As little as possible, and never as a cleaning method. Concrete tile cracks underfoot. We work from the eaves, ridges, and ladders wherever we can, and our soft wash equipment reaches across slopes without loading tiles.
What causes the black streaks on my shingles?
An algae called Gloeocapsa magma. It eats the limestone filler in the shingles and spreads downslope with water flow. Tracy's damp foggy winters accelerate it, especially on north-facing slopes.
How long does a roof cleaning last?
Typically several years. Because the soft wash kills the algae rather than just rinsing the color off, regrowth is slow. Shaded, fog-prone slopes may need attention sooner than sun-baked ones.
Is roof cleaning safe for my gutters and plants?
Yes. We control the rinse, capture runoff where needed, and water down landscaping before and after. Gutters actually benefit: the rinse flushes out grit and debris.
Ready to make it look new again?
Fast scheduling. Photo-documented results. A written quote before any work starts.