Those Black Streaks Are Not Just Dirt
The dark streaks you see on roofs across Katy are usually algae, and left alone they spread and can shorten the life of your shingles. A pressure washer is the wrong tool for a roof. Katy Brothers Pressure Washing uses a soft wash treatment built specifically for shingles, so algae and moss come off without damaging the roof itself.
What Our Roof Cleaning Includes
- Soft wash treatment safe for asphalt shingles
- Algae, moss and black streak removal
- Gutter exteriors rinsed clean
- A careful walk of the property before we start
Why Our Roof Cleaning Gets Chosen
- Soft wash method, never a damaging pressure blast
- Family owned and operated
- Free quotes, no pressure to book
- Local to Katy and the surrounding areas
What People Ask About Roof Cleaning
What causes the black streaks on my roof?
Those streaks are algae, most commonly Gloeocapsa magma, feeding on the limestone filler in asphalt shingles. It is not dirt and it will not wash off with rain or plain water, which is why streaked roofs keep getting worse season after season in a humid climate like Houston's.
Will pressure washing damage my shingles?
Yes, high pressure will damage asphalt shingles, which is exactly why we never use it on a roof. Blasting a roof strips the protective granules off the shingle surface and shortens the life of the roof. We soft wash roofs at low pressure so the cleaning solution kills the algae without stripping anything.
How long does roof cleaning last before the streaks come back?
A properly soft washed roof usually stays clear for several years, though how long depends on shade, tree cover and how much moisture the roof holds. North facing slopes and roofs under heavy canopy tend to regrow first. We will tell you honestly what to expect for your roof.
Can you clean a roof without walking on it?
Most of the time, yes. Soft washing is done from ladders and with extended reach equipment rather than by walking the surface, which protects both the shingles and the person doing the work. Some roof shapes need limited access, and we will say so up front.
Ready for Roof Cleaning?
Call, text or request a quote online. We usually respond the same day.