Roof Washing in Houston, TX
Black streaks gone. Shingles untouched.
Gloeocapsa magma is eating your roof from the top down. We remove it with a manufacturer-approved no-pressure wash that kills the algae at the root.
5.0★ · 157 reviews · Licensed & insured · Jobs from $549
Those black streaks are alive
The dark staining running down Houston roofs is Gloeocapsa magma — an algae that feeds on the limestone filler in asphalt shingles and holds moisture against them. Pressure washing a roof strips granules and voids warranties. We use the no-pressure soft wash method aligned with roofing-manufacturer guidance: a treatment is applied, the organism dies, and the staining rinses away with the next rains and a controlled low-volume rinse.
Roofs we clean
Drag to see the difference
Our six-step process
Roof inspection
We assess pitch, material, condition, and drainage, then quote a fixed price — free.
Protect
Landscaping saturated, downspouts diverted, gutters and beds shielded.
Treat
Manufacturer-aligned solution applied at zero pressure across the full roof plane.
Dwell & kill
The algae, moss, and lichen die at the root — not just surface-bleached.
Rinse & flush
Controlled low-volume rinse, then gutters flushed clean of runoff.
Walk-through
We review the result with you and send before-and-after photos the same day.
Hi, I'm Alan — founder of A&T's Pressure Washing
I treat every Houston home like it's my own — and you'll be talking to my crew directly, never a call center.
Save 20% off your exterior clean— booked in August only.
Drop your name and number for a free, no-obligation quote. Our team personally responds within the hour.
Offer ends August 31
Licensed & insured · No spam, ever · Quote in under 60 minutes
Alan & the A&T's crew
Owner-operated · Houston, TX
Roof Washing FAQ
Not with our method. We never put pressure on a roof — the treatment does the work, which is exactly what asphalt-shingle manufacturers recommend.
No. Pressure washing can. Our no-pressure soft wash follows the approach the roofing industry endorses for algae removal.
Most streaking lifts during the wash. Heavier lichen can continue to fade over a few weeks as dead growth weathers off.
Every 2–3 years for most homes. Heavily shaded roofs under oaks or pines regrow faster.