Black algae streaks
Dark organic streaking that develops across roof slopes, especially in humid, shaded conditions.
Houston roof algae removal
Target Dark Roof Algae Stains Without High Pressure
Those black streaks are often organic growth, not dirt that should be blasted away. We use a controlled soft wash approach based on roof material, condition, access and runoff.
- Algae-focused treatment
- Low-pressure application
- Runoff protection plan
What we treat
Roof algae, dark streaks and organic staining
We assess the staining before recommending service because similar-looking marks can come from very different conditions.
Moss- or lichen-like growth
Visible colonies require condition review and may release gradually rather than disappearing during the appointment.
Serviceable roof surfaces
Asphalt shingles, coated metal and specialty materials are considered case by case based on wear and manufacturer guidance.
Soft wash difference
Treat the growth instead of stripping the roof
High-pressure impact can be inappropriate for shingles, coatings, seams and roof penetrations. Our approach applies a material-appropriate treatment at low pressure and allows it to work on the organic source of the staining.
The plan accounts for gutters, downspouts, solar equipment, painted metals, siding below and landscaping. Application strength, dwell time and rinsing are adjusted to the specific roof and surrounding property.
Important: Algae treatment is not roof repair. Missing granules, coating loss, rust, faded material, old stains and other wear can remain visible. Some dead growth releases naturally with weather after treatment.
Our process
Roof, access and runoff planned together
1 Remote review
Photos show material, stains, height and geometry.
2 Condition check
Wear, damage and safe access are assessed.
3 Protection
Plants, metals and runoff paths are managed.
4 Treatment
Low-pressure application targets the growth.
5 Result review
Coverage and remaining roof wear are explained.
Roof washing results
Real algae and roof stain results
Safe quote prep
Send roof photos from the ground, never climb for us
Include full-slope views if safely visible, the roof material and approximate age, the worst streaking, solar panels or skylights, tree cover, and any known leaks or damage.
Photo-based scope review
Find out if your roof algae is treatable
Send the property address and safe photos. We’ll review the staining, roof type, access and surrounding surfaces before quoting.