Safe Roof Cleaning in Philadelphia
Remove black streaks, moss, and algae that shorten your roof's lifespan. Our soft wash approach cleans thoroughly without damaging shingles or voiding your warranty.
Those Black Streaks Are More Than Just Ugly
The dark streaks running down your roof aren't dirt — they're Gloeocapsa magma, a type of algae that feeds on the limestone in asphalt shingles. Left untreated, it slowly eats away at your roofing material, causing granule loss and premature failure. A roof that should last 25 years might only make it 15.
Moss is even worse. It grows under shingle edges, lifting them up and creating gaps where water gets in. Once water gets under your shingles, you're looking at rot, leaks, and expensive repairs. Philadelphia's humid summers and wet falls create perfect conditions for both algae and moss growth.
Philadelphia Property Pros uses a soft wash system — low-pressure water with cleaning solutions — to safely remove all organic growth without damaging your shingles. Soft washing is the method recommended by major shingle manufacturers for roof cleaning.
Our Roof Cleaning Process
A manufacturer-approved soft wash approach that safely removes algae and moss without high-pressure water.
Roof Inspection
We assess the condition of your roof from the ground and ladder, identifying the types of growth present, any damaged areas, and the best approach for your specific roofing material.
Protect Surroundings
Plants, shrubs, and landscaping below the roofline are soaked with water and covered. We protect windows, outdoor furniture, and anything that could be affected by runoff.
Soft Wash Treatment
Our specialized cleaning solution is applied at low pressure across the entire roof surface. It kills algae, moss, and lichen at the cellular level — destroying the root system, not just the visible growth.
Rinse & Verify
A gentle, low-pressure rinse removes the solution and dead organic matter. We inspect every section of the roof and rinse all surrounding landscaping to ensure no residue is left behind.
Roof Inspection
We assess the condition of your roof from the ground and ladder, identifying the types of growth present, any damaged areas, and the best approach for your specific roofing material.
Protect Surroundings
Plants, shrubs, and landscaping below the roofline are soaked with water and covered. We protect windows, outdoor furniture, and anything that could be affected by runoff.
Soft Wash Treatment
Our specialized cleaning solution is applied at low pressure across the entire roof surface. It kills algae, moss, and lichen at the cellular level — destroying the root system, not just the visible growth.
Rinse & Verify
A gentle, low-pressure rinse removes the solution and dead organic matter. We inspect every section of the roof and rinse all surrounding landscaping to ensure no residue is left behind.
Why Roof Cleaning?
Here's why Philadelphia homeowners and businesses choose us for their roof cleaning needs.
Extend Your Roof's Lifespan
Algae and moss accelerate shingle deterioration. Removing them can add years to your roof's life and delay a costly replacement.
Restore Curb Appeal
A clean roof makes your entire home look newer and well-maintained. It's one of the most visible improvements you can make from the street.
Warranty-Safe Methods
Our soft wash approach is the method recommended by major shingle manufacturers. High-pressure washing can void your warranty — soft washing protects it.
Improve Energy Efficiency
Dark algae streaks absorb heat and raise your attic temperature. A clean, lighter-colored roof reflects more sunlight and can reduce cooling costs.
Prevent Leaks & Rot
Moss lifts shingle edges, creating gaps where water infiltrates. Removing moss before it spreads prevents leaks, wood rot, and interior water damage.
Protect Property Value
A stained, mossy roof signals neglect to buyers and appraisers. A clean roof signals a well-maintained property and can improve your home's value.
Roof Cleaning FAQs
Common questions about our roof cleaning service.
Not with our method. We use a soft wash approach — low pressure specifically designed for roofing materials. High-pressure washing can damage shingles, which is why we never use it on roofs.
Results typically last 2–5 years depending on shade, moisture levels, and tree coverage around your home. Homes with heavy shade may need cleaning more frequently.
High-pressure washing can, but soft washing is the manufacturer-recommended cleaning method for most roofing materials. Check your warranty documentation for specific requirements.
Pricing depends on the size and pitch of your roof and the level of growth. Contact us for a free, no-obligation quote.
Our crew is trained in roof safety and uses proper equipment. For steeper roofs, we can clean entirely from ladders and from the ground using extended soft wash systems — no walking required.
Spring through fall is ideal, when temperatures are above 50°F. We recommend cleaning before summer heat bakes algae deeper into the shingles. But we can clean roofs in any season as long as conditions are safe.
No. We pre-soak all landscaping with water before treatment and rinse everything thoroughly after. We take every precaution to protect your plants.
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