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Roof Cleaning in Plainview, NY
If the north side of your Plainview roof has gone dark while the south side still looks fine, that is almost always algae, and it can be cleaned with a low-pressure soft wash rather than a replacement.
Plainview grew from about 1,155 residents in 1950 to more than 35,000 by 1960, as potato and cucumber farms were sold and built over in the post-war boom. The hamlet, in the Town of Oyster Bay, took its name in 1885 from the view of the Hempstead Plains from the Manetto Hills. With most of the land developed in that single decade, many Plainview homes are about the same age. If yours has an asphalt shingle roof, it contains the limestone filler that black-streak algae feeds on. Kevin and the team treat it with a low-pressure soft wash, under 500 PSI.
Newer homes need upkeep too. On this Plainview colonial the team cleaned the dark shingle roof and washed the white siding, from the board-and-batten gables down to the stacked-stone base. The driveway was still wet when this photo was taken, with a hose running across it.
Streaks Removed at the Source
Pressure Kept Under 500 PSI
Insured, OSHA-Compliant Access
What Changes After a Soft Wash
Click Any Box To Learn About Our Roof Cleaning Benefits
Black streaks from Gloeocapsa magma come off, so the shaded and sunny sides match again. The organism is killed, not just rinsed, which slows its return.
No high pressure means no stripped granules and no water forced under shingle tabs. The approach follows guidance from shingle manufacturers such as GAF, CertainTeed and Owens Corning.
Moss and lichen are killed in place and weather off afterward, so nobody has to scrape the roof and damage the surface.
Even Color Across the Roof
Black streaks from Gloeocapsa magma come off, so the shaded and sunny sides match again. The organism is killed, not just rinsed, which slows its return.
Shingles Left Intact
No high pressure means no stripped granules and no water forced under shingle tabs. The approach follows guidance from shingle manufacturers such as GAF, CertainTeed and Owens Corning.
Moss and Lichen Treated
Moss and lichen are killed in place and weather off afterward, so nobody has to scrape the roof and damage the surface.
A Plainview Roof Cleaner Close to Home
Kevin and the team have been in business on Long Island since 1986, working from our office at 108 Jerusalem Ave in neighboring Hicksville. Paperwork you can check: PWMCA certification, licensing and insurance, and Nassau County home improvement license HO455700000. Call (516) 350-8393 and you reach our own office; the cleaning is done by Kevin and the team, not subcontractors.
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Based in
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Nassau County
Licensed
In Business
Since 1986
Why One Side Streaks First
Algae needs moisture. Roof slopes facing north, or shaded by a neighbor’s tree, stay damp longer after rain and dew, so the streaking starts there and spreads downhill. Moss follows on the dampest spots, and lichen settles in where the roof stays wet longest. A cleaning usually holds for three to five years here; the shaded side may need a touch-up first. There is more on the biology in our roof streak explainer.
Our Process, Step by Step
It starts with a free quote worked up from satellite imagery. Once you sign off, Kevin or a team member meets you at the house on the day of the job. The crew soaks the plantings with clean water, fits barriers to downspout openings if the layout allows, and applies the soft-wash mix at low pressure. After it has worked, the roof is rinsed and NeutraPods goes down to neutralize what is left before it can reach the soil or the street drains.
Homeowner Reviews From Around Long Island
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 the team lead the job from start to finish.
See the Difference
When the job is done, Kevin or a team member 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.
See the Difference on Your Roof
Scroll over any photo to see a streaked, algae-stained roof go from grime to clean.
Roof Cleaning for Plainview and Old Bethpage
Our Core Exterior Cleaning Services
The full method is on our roof cleaning page. Plainview homeowners also hire us for pressure washing, house washing and gutter cleaning (from $295). To get a free quote, call or text (516) 350-8393 or use the online request form.
(516) 350-8393
Roof Cleaning Plainview NY: Frequently Asked Questions
Why is only one side of my roof stained?
The side that stays damp longest, usually north-facing or shaded, gives algae the moisture it needs. That is where streaks start before they spread.
Do I need a new roof or just a cleaning?
If the shingles are intact and the problem is staining, moss or lichen, a cleaning is usually enough. Kevin or a team member will point out anything that looks like damage during the walk-around before the job.
Is soft washing safe on asphalt shingles?
Yes. Shingle manufacturers recommend low-pressure cleaning, and that is how we work: under 500 PSI, with the solution doing the cleaning.
How often should a Plainview roof be cleaned?
Plan on every three to five years, and sooner for a roof in shade.
How is the price worked out?
We look at the roof footprint, steepness, material and how much growth is on it, all from satellite imagery, then send a free written quote. Typical figures appear in the cost guide.