Roof Cleaning

Many homeowners see black streaks or moss on their shingles and assume it’s time for a massive, five-figure replacement. In reality, your roof likely isn't "failing"—it’s just dirty.

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Those black streaks are actually a hardy algae called Gloeocapsa Magma. It feeds on the limestone filler in your shingles, literally eating your roof from the outside in. If left untreated, it causes premature aging and rot.

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Restore vs. Replace: The Financial Reality

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The difference in cost is staggering. By choosing a professional soft-wash cleaning over a full replacement, you aren't just improving curb appeal—you are performing a "surgical" restoration.

Service Average Cost:

Roof Replacement $12,000 – $25,000

Professional Cleaning $500 – $1,200

The Bottom Line: A professional cleaning costs roughly 5% to 10% of a total replacement. By investing in a cleaning today, you can save $15,000 or more while extending the functional life of your existing shingles for another decade.

The Benefits of Restoration

• Heat Reduction: Dark algae and moss absorb heat. A clean roof reflects sunlight properly, which can lower your cooling costs during Westchester summers.

• Insurance Compliance: Many insurance companies are now canceling policies or denying claims if they see significant moss or algae growth on a roof.

• Instant Curb Appeal: A clean roof makes a house look years younger, which is vital if you are considering selling.

The Professional Difference

I use a Soft-Wash System. This is a low-pressure chemical treatment recommended by the Asphalt Roofing Manufacturers Association (ARMA). Unlike high-pressure washing—which can blow the protective granules right off your shingles—soft washing kills the algae at the root without causing any structural damage.

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Don't buy a new roof when you can restore the one you have for a fraction of the price.