Real Results from Delaware
Professional roof treatment for Delaware homes. No pressure washing. No roof damage. Just results.
Delaware is the county seat of Delaware County and one of Central Ohio's most dynamic communities — a city where a beautifully preserved historic downtown meets rapidly expanding new developments on every side. The older neighborhoods surrounding Sandusky Street, William Street, and the Ohio Wesleyan University campus feature Victorian, Federal, and Italianate homes from the 1800s, many with original slate and cedar roofing. Meanwhile, newer subdivisions along US-23 and Liberty Road feature modern asphalt shingle construction. Across both old and new, Delaware's humid summers and mature tree canopy create ideal conditions for Gloeocapsa Magma algae — the organism responsible for the dark streaks spreading across rooftops throughout the city.
Forza Roof Cleaning has been serving Delaware homeowners for over a decade, including cleaning the slate roof of a historical home in the downtown district. We understand that Delaware's housing stock spans two centuries of architecture, and each roof type demands a different approach. Our treatment system is safe for original slate, cedar shake, tile, and modern asphalt shingles alike — no pressure washing, no walking on your roof. With a 5.0-star rating across 256 Google reviews and a quality commitment, Delaware homeowners trust Forza to protect their investment.
We respond within minutes. No obligation.
Gentle, no-pressure treatment that restores your slate roof's natural beauty. We never walk on your slate.
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Specialized treatment that revives cedar shake's warm, natural tones without damaging the wood fibers.
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Our signature service for steep pitches, complex rooflines, and hard-to-reach areas. No scaffolding required.
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Remove black streaks, algae, and moss from asphalt shingles. The most common roof type in Delaware.
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Green algae on your siding? Our treatment removes it from vinyl, brick, wood, and stucco safely.
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Clogged gutters cause water damage and foundation issues. We clean and flush your gutters thoroughly.
Learn More →Delaware's historic homes often have steep, complex rooflines that are dangerous to inspect on foot. Our drone captures every angle safely, identifying exactly what needs treatment.
If any bio-streaks return within 3 years of our treatment, we come back and re-treat at no charge. Whether your Delaware home is historic or brand new, our guarantee has you covered.
Pressure washing cracks slate tiles, destroys cedar fibers, and strips granules from asphalt shingles. Delaware's diverse housing stock deserves a gentle approach — our treatment system delivers.
Delaware homeowners invest in their landscaping and gardens. Our biodegradable cleaning solution is safe for plants, grass, pets, and the surrounding environment.
"We have a historic home near downtown Delaware with an original slate roof. Forza cleaned it perfectly — no pressure, no walking on it, just their drone and treatment system. The moss and algae are completely gone and the slate looks beautiful again. Highly recommend."
"Our home in one of the subdivisions off Liberty Road and had dark streaks spreading across the entire roof. Forza came out, took pictures with a drone, and cleaned it in one visit. The difference is incredible — it looks brand new. Great price too."
"Dwayne was responsive, professional, and the work was outstanding. Our roof near Ohio Wesleyan had years of algae buildup and he made it disappear. The quality commitment gives us confidence it'll stay clean. Would absolutely use Forza again."
Most Delaware homes fall in the $600–$1,800 range depending on roof size, material, and degree of growth. Historic slate and cedar roofs require more specialized treatment than standard asphalt shingles. Every job starts with a free drone assessment and a written estimate — no surprises.
Yes — our treatment is actually the only safe method for slate roofing. Pressure washing cracks tiles and causes irreversible damage. Our low-pressure system uses a biodegradable solution that kills moss, algae, and lichen at the root without any mechanical force. We've cleaned historic slate roofs in downtown Delaware.
Yes. We serve the city of Delaware (43015) and surrounding Delaware County communities including Powell, Lewis Center, Sunbury, Galena, and Orange Township. Call us at (888) 516-0008 to confirm your address is in our service area.
The dark streaks are caused by Gloeocapsa Magma, a type of blue-green algae that feeds on the limestone filler in asphalt shingles. Delaware's humid summers and mature tree canopy create perfect conditions for this algae to spread. Our treatment kills it at the root and prevents regrowth for years.
Browse real before-and-after photos from roof cleaning projects across Central Ohio.
View our project portfolio →Get your free drone assessment and see why 256 homeowners have given us a perfect 5.0-star rating.
