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Roof Cleaning Glen Head NY
Roof cleaning in Glen Head NY from Pressure Wash Long Island removes the black streaks, moss, and lichen that build up on shaded roofs — using soft wash roof cleaning that protects your shingles instead of stripping them. The hamlet sits under mature trees in the Town of Oyster Bay, and that shade keeps a roof damp long enough for algae, moss, and lichen to take hold on north-facing slopes, in valleys, and around dormers.
We soft wash asphalt shingle, slate, tile, and architectural roofs at low pressure — never high-pressure spray that can lift tabs or force water under the shingles. Most residential roof cleaning runs $500 to $800 depending on roof size, pitch, access, and how much growth has set in.
Pressure Wash Long Island is owned by Kevin, who has worked on Long Island homes since 1982. From homes near Pound Hollow Road and Glen Cove Road to the wooded streets around the LIRR station and the 11545 area, we clean roof systems with the right process for the surface. Call (516) 350-8393 for a written roof cleaning quote from our location at 108 Jerusalem Ave in Hicksville, one town over.
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 Black streaks are Gloeocapsa magma, a roof algae that feeds on the limestone filler in asphalt shingles and spreads as dark stains. Our soft wash roof cleaning treats the staining at the source at low pressure, with no granule-stripping spray. Heavier staining often keeps lightening in the days after the service as weather works with the treatment.
Moss and lichen take hold on shaded roof sections — north-facing slopes, valleys, and the lower courses near gutters. We apply the right solution, let it dwell, and rinse where appropriate. We never scrape or pull growth off, because that tears shingles and strips the surface. Treated growth releases on its own over time.
Properties here sit on landscaped lots with mature plantings, and roof runoff lands on all of it. We pre-wet plant material before every job and use NeutraPods to capture and neutralize runoff where landscaping is a concern — protecting the beds, shrubs, and lawns under your roofline from start to finish.
Black Streak Removal
Black streaks are Gloeocapsa magma, a roof algae that feeds on the limestone filler in asphalt shingles and spreads as dark stains. Our soft wash roof cleaning treats the staining at the source at low pressure, with no granule-stripping spray. Heavier staining often keeps lightening in the days after the service as weather works with the treatment.
Moss & Lichen Treatment
Moss and lichen take hold on shaded roof sections — north-facing slopes, valleys, and the lower courses near gutters. We apply the right solution, let it dwell, and rinse where appropriate. We never scrape or pull growth off, because that tears shingles and strips the surface. Treated growth releases on its own over time.
Safe for Your Landscaping
Properties here sit on landscaped lots with mature plantings, and roof runoff lands on all of it. We pre-wet plant material before every job and use NeutraPods to capture and neutralize runoff where landscaping is a concern — protecting the beds, shrubs, and lawns under your roofline from start to finish.
Why Glen Head Homeowners Trust Pressure Wash Long Island for Roof Cleaning
A roof is the most expensive surface on your house, and cleaning it wrong is how the protective granules get stripped and warranties get voided. We never put high pressure on a roof. Our low-pressure soft-wash methodology lifts algae, moss, and lichen at the root with biodegradable surfactant solutions, the method GAF, CertainTeed, and Owens Corning name in their maintenance standards.
Kevin has worked on Long Island homes since 1982. Decades in home remodeling means he reads a roof the way a builder does — he knows what is under the shingles, where water wants to go, and which slopes hold growth longest. His son Matthew works the roof cleaning jobs alongside the crew, and Kevin’s wife runs scheduling and quotes from the office at 108 Jerusalem Ave. When you call (516) 350-8393, you reach the family that does the work.
We are licensed and insured, PWMCA certified, and we clean roofs across the area and the greater Glen Cove communities. We also handle house washing, gutter cleaning, window cleaning, paver sealing, and commercial power washing throughout Nassau County. For full roof service details, see our roof cleaning Long Island page.
You get a written quote before any work starts, and that price is what you pay.
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Why These Roofs Get Black Streaks
Black roof streaks are algae, not dirt. On asphalt shingles, Gloeocapsa magma spreads across damp sections and leaves dark staining that worsens the longer the roof stays shaded. Around here it shows up near Pound Hollow Road, Glen Cove Road, and the wooded streets where mature trees slow drying after rain.
A Glen Head Roof We Clean Every Year
We maintain a large estate on an annual schedule, and last year the work focused on the north side of the home — the slope that sits in shade and grows back first. That is the pattern on these wooded properties: the sunny faces stay cleaner, the shaded faces need attention sooner. Annual soft washing keeps the whole roof even and stops growth before it embeds.
Soft Washing Is Safer Than Pressure Washing
We do not pressure wash asphalt shingles. High pressure can strip the granules, lift tabs, and force water under the shingles — problems worse than the staining itself. Our low-pressure soft wash uses roof-safe biodegradable solutions and the right rinse for the condition, the approach manufacturers name in their maintenance standards.
The Roofs We Soft Wash
The older and higher-end homes here carry a range of roofing — architectural asphalt shingle, slate, tile, and cedar on some estate properties. Each calls for a different touch, and none tolerate high pressure. We match the soft-wash approach to the material so the roof comes clean without losing surface grit, cracking tile, or splitting slate.
What Roof Cleaning Costs in Glen Head
Most residential roof cleaning here runs $500 to $800. The price depends on roof size, pitch, access, and how much growth has set in — and larger, steeper roofs under heavy tree coverage land toward the higher end because of the surface area and access involved. You get a written number before we start.
Protecting Your Landscaping and Runoff
A premium lot has plantings worth protecting, and roof runoff touches all of them. We pre-wet plant material before every job and use NeutraPods to capture and neutralize runoff where it matters — keeping the cleaning solution off your beds and out of the landscape while the roof gets clean.
When the Roof Is Not the Only Problem
Roof staining usually travels with gutter streaks, algae on siding, and growth on the walkways below shaded sections — the same moisture pattern affecting more than the shingles. When that happens we can pair roof cleaning with house washing, gutter cleaning, or window cleaning in one scheduled visit, quoted together or roof-only.
How We Quote and Schedule
Most roof cleaning quotes start from satellite imagery — we review your roof and send a price before anyone comes out. Kevin’s wife handles scheduling from the office, and on the day of the job Kevin or Matthew walks the property before any work starts so the scope is clear. You see the difference the same day.
Unparalleled Roof Cleaning Services in Glen Head NY
Glen Head NY Raves About Our Roof Cleaning
Roof Cleaning in New York
Pressure Wash Long Island was great for all the jobs was done, and they always answer the phone on time, arrive on time, great service ! I am sure I will use this company every year for power washing and roof cleaning.
Roof Cleaning in NY
Great service, extremely helpful and informative. looking forward to call them again for roof cleaning.
Roof Cleaning NY
Pressure Wash Long Island were on-time, reasonably priced - extremely polite. And my house and windows look amazing! Excellent roof cleaning service!
Our Simple Three Step Process
Working with us is easy as...
Getting a quote from Pressure Wash Long Island is fast and straightforward. Tell us about your property and what needs cleaning and we'll review it via satellite. Your written quote comes back before anyone sets foot on your property.
Set A Schedule
Once your quote is approved, our office locks in a date that works around your schedule. We confirm the day, show up on time, and get to work. Kevin and Matthew lead the job from start to finish.
See the Difference
When the job is done, Kevin or Matthew walks the property before we pack up. Every surface cleaned, every agreed area covered, no surprises on the bill. You'll see the difference the same day — and it will still be there six months later.
Revive Your Property Today!​
Scroll over any photo to see these damaged and ugly shingles transform into a safe and beautiful roof again!
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Roof Cleaning Glen Head NY — Frequently Asked Questions
How much does roof cleaning cost in Glen Head NY?
Most residential roof cleaning here runs $500 to $800. The price depends on roof size, pitch, access, and how much algae, moss, or lichen has built up. Larger or steep roofs under heavy tree coverage land at the higher end. Pressure Wash Long Island gives you a written quote before any work begins, so there are no surprises.
Is soft washing safe for asphalt shingles?
Yes. Soft wash roof cleaning is the correct method for asphalt shingles. We never use high pressure, which can strip the protective granules, lift tabs, and force water under the roof. Our low-pressure method with biodegradable solutions treats algae, moss, and lichen without harming the surface — the approach GAF, CertainTeed, and Owens Corning name in their maintenance standards.
What causes the black streaks on my roof?
Those streaks are Gloeocapsa magma, a roof algae that feeds on the filler in asphalt shingles and spreads as dark stains. Roofs here streak faster on shaded slopes, valleys, and areas near mature trees that stay damp after rain. The streaks are not dirt, so they need a roof-safe soft-wash treatment, not pressure washing.
Can moss and lichen damage my roof?
Yes. Moss and lichen hold moisture against the shingles and shorten roof life if ignored. They are common on shaded sections that stay damp after rain. We treat the growth so it releases on its own instead of scraping it off, which would tear shingles and strip the surface. Heavier growth keeps lightening after the service.
How often should a roof be cleaned in Glen Head?
Most roofs here benefit from cleaning every year or two, depending on tree coverage and which slopes sit in shade. North-facing slopes under mature trees grow back fastest, so shaded homes often go on an annual schedule. Regular cleaning keeps growth from embedding and protects the roof’s lifespan.
Do you clean gutters or siding during the same visit?
Yes. Roof cleaning can be scheduled with gutter cleaning, house washing, or window cleaning, which makes sense when roof runoff and shaded moisture mark the siding, fascia, and surfaces below. We can quote the roof on its own or bundle the related exterior cleaning into one written estimate.
Schedule Roof Cleaning in Glen Head NY
If your roof has black streaks, moss, lichen, or shaded sections that never seem to dry clean, Pressure Wash Long Island can help. We soft wash asphalt shingle, slate, tile, and architectural roofs at low pressure that protects your shingles, your gutters, and the landscaping below. Most jobs run $500 to $800 with a written quote up front. Call (516) 350-8393 for roof cleaning near you in Glen Head and across the greater Glen Cove area — including Sea Cliff, Glenwood Landing, Old Brookville, and Matinecock.