Expert Roof Cleaning in Portsmouth, NH

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At Seacoast Exterior Cleaning LLC, we specialize in safe, professional roof cleaning services across Portsmouth, Rye, Kittery, Dover, and the greater Seacoast region. Using a proven soft wash system, we remove years of moss, mold, algae, and grime without damaging your shingles — extending the life of your roof and enhancing curb appeal in just hours.

New England’s coastal weather creates the perfect environment for:

• Black streaks (algae) 
• Green moss growth 
• Lichen and mildew patches
   

These stains don’t just look bad — they trap moisture, eat away at your roofing materials, and cause premature failure. Roof replacement can cost $10,000+ — our cleaning can prevent that.

Unlike traditional high-pressure cleaning (which can damage shingles), we use a low-pressure soft wash system with eco-friendly, biodegradable solutions. This safely:

• Kills moss and algae at the root 
• Loosens stains and dirt 
• Prevents regrowth for up to a year or more
   

The result? A spotless, like-new roof without voiding warranties or causing wear.

Extends Roof Life
Regular soft washing can add 5–10 years to your roof’s lifespan.

Improves Energy Efficiency
Algae absorbs heat. A clean roof reflects sunlight better, helping your attic stay cooler in summer.

Boosts Curb Appeal
A freshly cleaned roof transforms the look of your entire home — making it look newer, well-maintained, and more valuable.

Saves You Thousands
Neglect = rot, leaks, and full replacements. Cleaning now avoids major costs later.

Eco-Friendly Approach
Our method protects your landscaping, siding, and shingles while delivering stunning results.

• Asphalt shingles 
• Metal roofing 
• Cedar shake 
• Tile and synthetic roofing
   

Whether you’re selling your home, maintaining a rental, or just tired of black streaks — we’re here to help.

 Proudly Serving: Portsmouth, Rye, Hampton, Exeter, Dover, Greenland, North Hampton, Kittery, York, Eliot, and nearby towns.