Asphalt Shingle Roof Cleaning
No-pressure soft wash that kills gloeocapsa magma — the algae behind black streaking — without dislodging a single granule from the shingle surface.
Included in your free quote
Roof Cleaning
Pearland, TX
No-pressure roof treatment that removes black streaks
No-pressure roof treatment Removes black streaks Extends shingle life
Free On-Site Quote
Professional Roof Cleaning
Shingle, tile & flat roofs
Those black streaks are gloeocapsa magma — a roof-eating algae that holds moisture against your shingles and shortens their life. We treat it with a no-pressure soft wash method approved by shingle manufacturers.
Tile, metal, and flat roofs get the same careful treatment with the mix and dwell time adjusted for the material. Nothing is scrubbed, walked on unnecessarily, or blasted.
What's Included
- Full roof algae and lichen treatment
- Black streak removal
- Gutter exterior brightening available
- Landscaping protection and rinse
- Downspout flush
- Post-clean walkthrough
Roof Types We Clean
Shingle, Tile, Metal & Flat Roof Cleaning
Roofing material dictates the chemistry, the dwell time, and how the crew moves on the roof. Here's how we handle each type across the Houston area.
Tile Roof Cleaning
Clay and concrete tile hold moss and lichen in the valleys. We treat and rinse carefully, working off walk boards so tiles never crack underfoot.
Included in your free quote
Metal Roof Cleaning
Standing seam and R-panel roofs cleaned with a coating-safe mix that removes streaking and oxidation film without dulling the finish.
Included in your free quote
Flat & TPO Roof Cleaning
Commercial flat roofs get ponding stains and biological growth. We clean membrane surfaces gently and keep drains clear as part of the service.
Included in your free quote
Black Streak Removal
The dark vertical streaking on north-facing slopes is living algae, not dirt. Treatment kills it at the root so it doesn't return in a few months.
Included in your free quote
Moss & Lichen Treatment
Lichen roots into the shingle mat. We treat it and let it release naturally over the following weeks instead of scraping and damaging the roof.
Included in your free quote
How It Works
Our Roof Cleaning Process
Step 1
Free On-Site Estimate
We walk the property, measure the areas, note surface type and staining, and give you a flat written price for the roof cleaning — no guessing, no surprise add-ons.
Step 2
Prep & Protection
Plants get pre-wet and rinsed, outlets and fixtures are covered, doors and windows checked, and pets and vehicles moved clear of the work zone.
Step 3
Clean The Right Way
Soft wash chemistry on delicate surfaces, hot water and surface cleaners on hard surfaces. Dwell time is what removes the growth — pressure alone just moves dirt around.
Step 4
Rinse & Walkthrough
Everything gets a full rinse-down, then we walk the job with you. If anything was missed we handle it before the truck leaves.
Know The Signs
When It's Time For Roof Cleaning
- Green, black, or gray streaking that keeps coming back after rain
- Chalky, dull surfaces that used to look bright
- Slick spots underfoot after a humid Gulf Coast week
- Dark organic staining along shaded or north-facing areas
- A listing photo, event, party, or family gathering coming up
- It has been more than 12 months since the last cleaning
Why GreaseKleen
Trusted By Houston Homeowners
Fully Insured
General liability coverage on every job, certificate available on request.
Local To Pearland
We live and work here — we know what Gulf Coast humidity does to surfaces.
Flat Written Pricing
The number we quote is the number you pay. No hourly creep.
Respectful Of Your Home
Quiet, tidy, on time, and gone before your day gets interrupted.
“Showed up when they said, walked the whole property with me first, and the difference was night and day. Easiest contractor I've hired in Pearland.”
— Verified GreaseKleen customer
Estimating
What Affects Your Roof Cleaning Price
Every property is different, so we price on-site instead of guessing over the phone. These are the factors we look at when we put your written estimate together.
Square Footage
Total area we're cleaning and how it's laid out.
Surface & Condition
Material type plus how heavy the growth or staining is.
Access
Height, gates, water access, and how much setup the site needs.
Add-Ons
Bundled services in the same visit usually lower the per-service cost.
Roof Cleaning FAQs
Does roof cleaning void my warranty?+
Not when it's done correctly. High pressure does void warranties — that's why we use a no-pressure soft wash, which is the method shingle manufacturers recommend.
How long do results last?+
Typically three to five years in the Houston climate, depending on tree cover and how much shade the roof gets.
Will the runoff hurt my plants?+
We pre-wet all landscaping, tarp sensitive beds when needed, and rinse thoroughly afterward.