Are you searching for pressure washing or to have your roof cleaned in westchester county, NY? If so, Westchester Power Washing, a 5 star Google rated home pressure washing company is the one to call. Westchester Power Washing is licensed and insured. We pressure wash houses, patios, patios and decks. In addition, we soft wash roofs, power wash outdoor furniture and fences.

pressure washing, soft roof washing, vinyl siding, Logo for Westchester PowerwashingSince 1990, Westchester Power Washing has power washed more than 18,000 homes and roofs. Our customers are in Westchester, Putnam and Dutchess County, New York. This is not a handyman company. We are professional, experienced and highly qualified pressure washing and roof cleaning experts.

Our pressure washing services include one story, two story and multiple level homes. Brick houses, stucco and wood homes pressure cleaned. We pressure wash and clean brick pavers, stone pavers, concrete patios, wood decks, bluestone, flagstone and slate. In addition, we soft wash and clean all types of roofs including asphalt shingles, slate and cedar wood roofs.

power washing,roof shampoo, soft wash, pressure cleaning, siding,pressure washing, siding pressure cleaning, Vinyl siding pressure washing, siding soft wash, house washing, soft house washing, power washingWe power washing all types of siding including vinyl, wood (painted and stained wood), aluminum, stucco, brick and more. Also, we clean and restore all types of decking. Wood decks, composite decks, Trex, Timber Tech including pressure treated, cedar, mahogany and all other wood decking.

We also pressure wash all outdoor surfaces from  pool decking, teak furniture tables, chairs, wood fences, pvc fences and cinder block walls.

We pressure wash, clean and remove dirt, black streaks, mold, mildew, lichens, moss or fungus. Black streaks are a sign that mold and mildew is present and algae.

What causes dark marks or black streaks on my roof?


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Those dark marks or black streaks are Gloeocapsa magma. Depending on the age and condition of your roof, soft washing your roof is the best and most cost-effective solution. Roof replacement in comparison, which is not necessary most of the times, could cost up to 10 times more than roof cleaning.

The black streaks are not preventable as they are caused by humidity and is very common in Westchester, Putnam and Dutchess County, NY.. The marks are cause because of the algae 

which survives through photosynthesis where the algae feeds on the limestone filler used in asphalt shingles.

Yes shingle makers have been treating roofs with copper or zinc to inhibit algae growth but these stop being effective over time. This leads to the algae eventually continue to eat the limestone in the shingles combined with the New York humidity and the dark marks or black streaks appear.

Most black streaks form on the northern side of roofs. This is because this where it’s darker and wetter which is perfect for algae to grow. Compared to Florida where it is even more humid, homeowners in Westchester County fare only slightly better.

Of course, in Arizona where it is more dry, there is less humidity so less algae growth.When the algae decays, the algae turn black. Therefore you see the black streaks on your roof.


Are the black streaks harmful to my roof?

pressure cleaning, pressure washing, roof washing, black streaks, black marks, pressure washing, power washing, Chappaqua, house washing and roof cleaning, moss, mold, mildew, black streaks, soft roof wash, shampoo, power washing, roof shampoo, roof algae- westchester power washingYes, the black streaks are harmful to your roof. This is because the black marks greatest threat to your roof is moisture retention or root damage that algae and other fungus and bacteria can cause. These two combine together to form lichen, the roots of which can wrap around and feed on the granules covering the shingles. Unlike black streaks, lichen is not easily removed.

Even when lichen dries, it comes right back after intense humidity, snow or rain, Scrubbing or power washing lichen will only cause more damage to your roof.

What is the best way to clean my roof to get rid of black marks and lichens?


Furthermore, the best way to clean your roof is soft roof washing. Soft roof washing is better than roof shampoo. Also, soft washing uses a eco-friendly cleaning solution to bath your roof and destroy moss, mildew , lichen and fungus. This is gentle applied to your roof. As a result, when your roof is washed down, the algae lifts off and washes off your roof.


After you wash my roof, how long will it be clean?


Westchester Power Washing guarantees your roof will be clean of black streaks and lichens for 5 years. In addition, if you see black marks or streaks on your roof, just give us a call at 914-490-8138 and we will wash your roof.


Do you give FREE Roof Cleaning and Pressure Washing Quotes or Estimates in Westchester, Putnam and Dutchess CO. New York?


Yes, Westchester Power Washing gives free estimates and quotes for roof cleaning and for pressure washing houses, patios, decks, siding, sidewalks, walkways and fences.


For FREE pressure washing and roof cleaning quotes and estimates call 914-490-8138.

Feel free to visit our website at Power Washing Westchester.

In addition, our other websites are Westchester Power Washing., Roof Washing NY , Westchester Roof Washing and Pressure Cleaning Westchester.