Roof Cleaning
Houston, TX.
ARMA-approved soft wash removes black streak algae from Houston asphalt shingles. Serving Memorial, Heights, West University, River Oaks, Bellaire, and all Houston neighborhoods.
Why Houston homeowners choose PrimeStar for soft wash roof cleaning.
Houston asphalt shingle roofs develop black streaking from Gloeocapsa magma — a cyanobacteria spread by wind from untreated neighboring roofs. The Greater Houston metro has some of the densest roof algae contamination in Texas because of the combination of high humidity, warm temperatures year-round, and the spread pattern that means untreated roofs accelerate colonization of clean ones nearby. Memorial, Heights, West University, and Bellaire homes commonly see first streaking within 18–24 months of installation if nearby roofs are untreated.
We use the ARMA-recommended soft wash method: sodium hypochlorite solution applied at under 100 PSI at the shingle surface, allowed to dwell to kill the algae colony at the root, then rinsed thoroughly from ridge to eave. All landscaping, gutters, and exterior siding receive pre-wet protection before solution application. We do not walk shingles unnecessarily — cleaning is performed from the ladder and extended pole where possible.
Free 24-hour written quote. Dispatching from inside Beltway 8 near the Energy Corridor — most Houston addresses are 10–20 minutes. Bundle roof soft wash with house exterior cleaning for 10% off the combined invoice.
Houston neighborhoods we service.
Roof Cleaning FAQ — Houston.
What causes the black streaks on Houston roofs? expand_more
The black streaks are caused by Gloeocapsa magma, a cyanobacteria that spreads via wind from colonized roofs to neighboring ones. It thrives in Houston's high-humidity climate and retains moisture against shingles, accelerating granule loss and shortening roof life.
Is pressure washing safe for Houston asphalt shingles? expand_more
No — high-pressure washing dislodges the granules that protect asphalt shingles and voids most manufacturer warranties. The ARMA-approved method is soft washing: sodium hypochlorite solution applied at under 100 PSI at the surface.
How long do results last after soft wash roof cleaning? expand_more
Roofs cleaned with the soft wash method stay clean for 2–4 years depending on tree shade and proximity to other untreated roofs. The sodium hypochlorite kills the algae colony at the root, not just the surface layer.
More Roof Cleaning pages
Get a free roof cleaning quote in Houston.
24-hour response. No pressure. Just a fair price.