Westchester Pressure Cleaning
Serving Westchester NY since 1990
Katonah Pressure Washing and Roof Cleaning

Katonah Pressure Washing

Katonah pressure washing company, Westchester Power Washing is experienced and fully insured.

We have more than 18,000 satisfied roof cleaning and house pressure washing clients.  You pay us when the pressure cleaning is complete. We clean and remove Mold (Black Streaks), Moss, Algae, Lichen, Fungus & other bacteria. Pressure cleaning services for your roof, siding patio, deck, driveway, walkway, and home’s exterior. Plus, we have a 5 Year Streak-Free Roof Guarantee.

Westchester Power Washing provides the following pressure washing services in Katonah and throughout Westchester, Putnam and Dutchess County, New York:



We clean all types of roofs: Asphalt Shingles, Slate and Cedar Wood Roofs.



Power wash all types of siding: Vinyl, Wood (painted and stained), Aluminum, Stucco and more.




All decking cleaned/restored:  Wood,  Composite, Trex, Timber Tech ( including pressure treated, cedar, mahogany, and all other wood deckings). In addition, we wash all outdoor surfaces-  pool decking, teak furniture tables and chairs, fences (wood and PVC).



All types of patios, walkways and pool decking (Stone pavers, Concrete patios, Bluestone, Flagstone, Slate).

Free Roof and House Cleaning Estimates- 914-492-8138, Westchester Power Washing- Residential Pressure Cleaning- Westchester, Putnam and Dutchess County, New York

Westchester Power Washing is insured to protect you and us. We have liability and workers compensation insurance that is specific to pressure washing and roof cleaning. Most companies are not insured. This places you and your home at risk. We take our responsibility seriously. Westchester Power Washing has 30 years of experience and has washed more than 18,000 homes. We are professionals and guarantee our work.

Our mission is to be the best. The best value. The most trusted name in roof cleaning and residential pressure washing.

Call us for a FREE estimate at 914-490-8138, if you want your house, roof, patio, deck, fence, outdoor furniture or walkway expertly cleaned.

Are you searching for slate or shingle roof cleaning near me in Katonah? If your roof has black stains, moss, mold, mildew or bacteria, we get it deep cleaned for you.

Our soft slate, shingle and asphalt roof washing and roof shampoo services in Katonah are the best rated and most recommended all roof cleaning companies in Westchester, NY. We have 30 years of experience pressure washing houses, siding, patios, decks, walkways, driveways, bricks, pavers, stone and fences in Katonah. In addition, we have pressure cleaned more than 18,000 residential properties.

dirty shingle, asphalt roof soft washed, black marks, roof shampoo
Before roof soft washing
After soft washing of dirty shingle, asphalt roof soft washed, black marks, roof shampoo
After soft roof washing

Westchester Power Washing is the #1 rated, best pressure cleaning business in Westchester, Putnam and Dutchess County. We are insured for liability and have workers compensation coverage specific for pressure washing and roof cleaning. Furthermore, we provide FREE roof cleaning and house pressure washing estimates. Just call or text us at 914-490-8138. Peter Salotto, owner of Westchester Power Washing will get back to you ASAP. 

Beware, most roof cleaning and pressure washing companies lack proper insurance. We are properly insured to protect you, us and our workers in case of an accident. Make sure you ask to see the roof cleaning companies or pressure washing business insurance. If the insurance does not specifically state liability and worker’s compensation for roof cleaning or pressure washing, do not hire them. Call Westchester Power Washing instead. We are insured and can show you our insurance to prove it.

Dirty roof in Katonah? Should you call a roofing contractor or Westchester Power Washing?

Most roof contractors do not want you to know that your dirty roof shingles need to be cleaned, not replaced. If you see black streaks on your roof, mold, mildew, lichens or moss, call Westchester Power Washing at 914-490-8138. More than likely, your dirty roof needs to be soft washed. Soft washing removes black streaks, mold, mildew, lichens, and moss from your roof.

Homeowners think a dirty roof needs to be replaced. If you call a roofing contractor, they will likely tell you to replace your roof. Why? Roof contractors make money replacing roofs. Furthermore, roof replacement can cost as much as ten times the price of having your roof cleaned. If your roof is less than 25 years old, you may just need to have your roof professionally shampooed and cleaned.

Black streaks are caused by roof algae. The technical term for roof algae that cause the black streaks on your roof is Gloeocapsa Magma. Algae feed on the crushed limestone used in asphalt shingles. As rain washes down your roof, it spreads algae down your roof causing the black streaks you see. Black streaks cause shingles to fail prematurely by not preventing the shingles from reflecting heat properly.

Research has shown 50% of dirty roofs in Katonah are replaced because of black streaks not because they are damaged.

Unfortunately, when homeowners in Katonah see a dirty roof, they think it is time to replace their roof. This is usually not true. Research has shown more than half the roof replaced in Katonah and Westchester County, NY were replaced because of how they look and not their condition. Therefore, more than 50% of roofs need to be professionally washed, not replaced. In fact, this means, people who replace their roof have simply wasted their money.

Roofs in Westchester, Putnam and Dutchess County, New York experience a lot of humidity, rain and snow. This moisture promotes algae to growth on the roof. The algae create the black streaks and the roof looks dirty, old and damaged. As stated before, this is just a dirty roof not a roof in need of replacement.

We clean slate, shingle and asphalt roofs in Scarsdale, Armonk, Katonah, Bronxville, Tarrytown, Chappaqua, Briarcliff Manor, and Croton on The Hudson since 1990. As a result, we have restored many slate, shingle and asphalt roofs by soft washing them with our eco-friendly cleaning solution, Prior to our coming roof cleaning, homeowners were told they needed to replace the roof. By having Westchester Power Washing wash and clean their roofs, these homeowners saved thousands of dollars over the cost of roof replacement.

How do I know when my dirty roof needs to be washed or replaced?

Just as mold and mildew grow on your vinyl siding, windblown algae lands and grows on your slate, asphalt and shingle roof. Remember, your home’s exterior just like the interior needs to be washed and cleaned. Therefore, when your house, patio, deck, roof, siding, fence, outdoor furniture gets dirty, pressure washing saves you money being cleaning not replacing.

Most roof contractors do not know the difference between a dirty roof with algae and black streaks versus a roof in need of repair or replacement. Roof contractors sell roofs, not clean roofs. Also, some roof contracting companies do not know the roof is dirty because they are not educated in roof maintenance which includes roof washing.

If you are thinking about replacing your roof because it is dirty, your see black streaks or your roof looks faded, call Westchester Power Washing first at 914-490-8138. We will take a look at your roof and give you a FREE roof cleaning and washing estimate.

While there we can also see if your siding, deck, patio, fence, walls, or pavers needs pressure washing. If so we will provide you with a FREE complete exterior house washing quote.

What are the signs of a dirty roof that needs to be replaced?

To being with, never use a pressure washer on an asphalt, shingle or slate roof. A pressure washer will damage the granules on your shingles and lessen your roof’s life and longevity.

Roof shingle manufacturers like Owens Corning and GAF as well as the Asphalt Roofing Manufacturers Association recommend a soft wash method to restore shingles with roof algae. Westchester Power Washing uses the cleaners and methods recommended by these companies, to provide you with a safe and damage-free roof washing and cleaning.

If your roof shingles do need to be replaced, we can recommend a reputable roof contractor if you need one. Furthermore, we do not recommend cleaning shingles that are in need of being replaced. In addition, our customers in Westchester, Putnam and Dutchess County, NY can attest, we believe true customer service starts with integrity.

Therefore, when you recommend us for roof, house, siding, deck, patio or fence washing, you’re recommending a professional company. As well as one that cares about your neighbors, friends, and family.

If not sure if your roof shingles need replacement or need cleaning, below are some signs of an aged roof in need of replacement.

1) dry rotted, brittle or crumbling shingles
2) excessive amounts of shingle granules in your gutters, sidewalk or landscape
3) notice the bottom corners of shingles are curled up, twisted or lifting up
4) warped, wavy or heaved shingles
5) shingles are thinning out or are loose or falling off

If you see your roof exhibiting these conditions, your roof is in need of repair and maybe full replacement.

If you are cannot see your roof or are not sure about what we just described, and you are thinking about whether you should wash or replace your roof, give Westchester Power Washing a call.

Furthermore, we come to your home and see if roof washing is the best option. Westchester Power Washing never washes a roof that needs to be repaired or replaced. In addition, we give our professional opinion if cleaning your roof is not safe nor worth your investment.

Westchester Power Washing is a licensed and insured house exterior cleaning company. We wash and clean roofs, houses, siding, decks, patios, fences and outdoor furniture. We have been pressure washing homes for almost 30 years. Westchester Power Washing is a 5 Star Google Rated, Yelp, and consumer review home pressure washing company.

Our services include pressuring wash homes, dirty roofs and siding throughout Westchester, Putnam and Dutchess County, NY.

We pressure wash homes, roofs, decks, patio and fences in the following towns and zip codes. If you live in or near these towns, call Westchester Power Washing for a FREE estimate or to book us today at 914-490-8138. Our main websites are www.WestchesterPowerWashing.com and www.PowerWashingWestchester.com.

algae, growth, dirty roof, westchester, putnam and dutchess county ny, westchester power washing

Ardsley NY 10502, Bedford NY 10506, Bedford Hills NY 10507.  

As well as Briarcliff Manor 10510, Chappaqua NY 10514, Brewster NY 10509, Carmel (Kent) NY 10512, Cortlandt Manor NY 10567, Croton on Hudson  NY 10520.

In addition to Dobbs Ferry NY 10522, Eastchester NY 10709, Goldens Bridge NY 10526. Harrison NY 10528, Hartsdale NY 10530, Hawthorne NY 10532. Hopewell Junction NY 12533. As well as Irvington NY 10533, Katonah NY 10536, Larchmont NY 10538.

Mahopac NY 10541, Mamaroneck NY 10543, Millwood NY 10546, Mohegan Lake NY 10547., As well as Montrose NY 10548, Mt. Kisco NY 10549, New Rochelle NY 10804, 10801, 10802, 10803, 10805, North Salem NY 10560, Ossining NY 10562, Pleasantville NY 10570.

In addition to Pound Ridge NY 10576, Purchase NY 10577, Putnam Valley NY 10579, Rye NY 10580, Rye Brook NY 10573.  As well as Scarsdale NY 10583, Sleepy Hollow NY 10591, Somers NY 10589, South Salem NY 10590, Tarrytown NY 10591, Thornwood NY 10594. 

Furthermore, Valhalla NY 10595, Waccabuc NY 10597, West Harrison 10604, Westchester. White Plains NY 10601,10602,10603,10604,10605,10606,10607,  Yorktown Heights NY 10598

To contact Westchester Power Washing online, please go to our contact us page located here.

If you are interested in seeing some of our popular houses, roof, deck and patio pressure cleaning videos on YouTube click here.

To watch one of our popular brick pressure washing videos, click here. This video has gone viral. Watch it and please let us know if you like it.

If you would like to connect with us on Facebook, we would appreciate that.


Roof Washing NY

Pressure Cleaning Westchester

Power Washing Westchester

Westchester Pressure Washing

Westchester Roof Washing

If you are searching for pressure cleaning near me or searching for roof or house washing near me in Katonah or in Westchester, Putnam or Dutchess County NY- Westchester Power Washing is near you for roof, house, patio, deck, siding, fence and outdoor furniture cleaning.

Our extensive Katonah roof cleaning and house pressure cleaning services include:

  • Roof cleaning- slate, shingle, asphalt
  • Roof shampoo- moss, black streaks, black spots, lichens, mold, mildew, algae, fungus, and bacteria removed
  • Patio washing- wood, cement, pavers, tile, brick, composite
  • Stone washing and cleaning
  • Mold mildew washed of all exterior surfaces
  • Walkways
  • Pool surfaces
  • Slate walkways and roofs
  • Flagstone
  • Block
  • Stone Walls
stone wall pressure washed, black marks, oil, dirt, moss, mold, mildew, fungi, algae, soot, stains
Dirty Stone Wall Before Pressure Washing
stone wall pressure washed, black marks, oil, dirt, moss, mold, mildew, fungi, algae, soot, stains
Before and after of stone wall pressure cleaned
Call Now Button