Shingle Roof Washing

Safe Soft Washing for Asphalt Shingle Roofs in Pittsburgh & Surrounding Areas

Black streaks on your roof aren’t just cosmetic — they’re a sign of algae growth that can shorten the lifespan of your shingles.

If your asphalt shingle roof is stained, streaked, or covered in moss, professional soft washing is the safest and most effective way to restore it.

At So Clean Solutions, we specialize in low-pressure shingle roof washing that removes algae, moss, and organic buildup without damaging your roofing system.

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What Causes Black Streaks on Shingle Roofs?

Those dark streaks are typically caused by Gloeocapsa magma, a type of airborne algae that feeds on the limestone filler in asphalt shingles.

Over time, this growth:

• Causes visible black streaking
• Retains moisture on your roof
• Contributes to shingle deterioration
• Reduces curb appeal

In Western Pennsylvania’s humid climate, this problem is especially common.

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Why You Should Never Pressure Wash Asphalt Shingles

Pressure washing can cause serious and irreversible damage to shingle roofs.

High-pressure cleaning can:

• Remove protective granules
• Shorten roof lifespan
• Void manufacturer warranties
• Loosen or lift shingles
• Force water beneath the roofing system

That’s why we only use a professional soft washing method designed specifically for asphalt shingles.

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Our Asphalt Shingle Roof Soft Washing Process

Every project begins with a visual inspection to ensure your roof is structurally sound before cleaning.

Step 1: Roof & Property Assessment

We check shingle condition, flashing, gutters, and surrounding landscaping.

Step 2: Property Protection

Plants, siding, and nearby surfaces are thoroughly pre-soaked and protected.

Step 3: Soft Wash Application

We apply a specialized cleaning solution that kills algae, moss, and bacteria at the root.

Step 4: Natural Rinse Process

In many cases, no aggressive rinsing is required. The solution continues working over time, allowing stains to dissipate naturally.

Our method provides deeper, longer-lasting results than surface pressure washing.

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What We Remove from Shingle Roofs

We safely eliminate:

• Black algae streaks
• Moss growth
• Lichen colonies
• Mold and mildew
• Organic debris buildup

Removing these contaminants helps extend the life of your roofing system.

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Benefits of Professional Shingle Roof Washing

✔ Restores original roof color
✔ Improves curb appeal instantly
✔ Extends roof lifespan
✔ Prevents premature replacement
✔ Maintains manufacturer warranty compliance
✔ Increases property value

Routine cleaning is far more affordable than early roof replacement.

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How Often Should Asphalt Shingles Be Cleaned?

Most shingle roofs benefit from soft washing every 2–4 years, depending on:

• Tree coverage
• Roof orientation
• Moisture exposure
• Severity of algae growth

If you see black streaks forming, it’s best to address the issue early before growth spreads.

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Why Choose So Clean for Shingle Roof Cleaning?

• Fully insured exterior cleaning professionals
• Specialized soft washing equipment
• No high-pressure roof cleaning
• Safe for asphalt shingles
• Trusted throughout Pittsburgh and surrounding communities

We understand how valuable your roof is — and we clean it the right way.

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