Roof Cleaning

Roof Cleaning

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Roof Washing

Roof Cleaning Service Connecticut

What should you know about the black streaks on your roof and how did they get there?

black streaks on your roof

Well, it’s Alive! Yes! Those ugly black streaks on the roof known as roof algae or the scientific name Gloeocapsa Magma has gained notoriety in the Northeastern part of the United States.  This particular type of cyanobacteria is responsible for creating black stains and streaks on roofs. The bacteria accumulate over time as it feeds on moisture and calcium carbonate. This accumulation begins to show the black stains as the cyanobacteria develop their dark and hard UV-protective outer coating. These stains take months, or even years, to appear, but once they are present they are here to stay, living and feeding on your roof shingles. So how did they get on my roof you ask? Well, you could thank your neighbor or someone in the area, algae spore are thought to break free and become air born and land on your house. These algae spores set up shop on the North Side of your house, as they begin to feed on your asphalt shingle. Every rainfall or moist weather forecast causes an increase in the growth of the roof algae / Gloeocapsa Magma. This formation of roof algae can be noticed streaking towards your gutter line. As our climate in Connecticut and surrounding areas begin to warm our problem with roof algae begins growing as well.

Roof algae: more than just a curb appeal problem.

Roof Algae will eat years off your roof by feeding on the limestone filler in the shingles.  Over time your roof will have premature aging, rotting, and granule loss. Roof shingles are designed to reflect sunlight and keep your house cool in the warmer months. As the roof algae become larger growing in size so does its black UV shield. The larger the black stain the more heat absorption from the sun. The heat from the sun becomes trapped in your roof; thus, warming your attic and raising your electric bill. Maintaining a cool household temperature in the warmer season becomes a difficult challenge for any AC unit. A constant running AC can be a strain on your wallet. CT Power Washing & Roof Cleaning & Soft Washing knows your property is your single largest investment. Each year in the US homeowners spend billions of dollars maintaining the exterior of their home. After all the hard work of painting, gardening, and decorating don’t let your property be robbed of its beauty with roof algae. These stains can be seen from down the block and are unsightly to look at. CT Power Washing & Roof Cleaning & Soft Washing, Soft Wash system will kill the roof algae, remove the stains, and restore your house back to a desirable look.  Next time you pull up in your driveway, you’ll be glad you called.

Exterior Cleaning Services


• Apartments
• HOA's
• Condos
• Townhomes
• Balconies
• Parking Lots
• Sidewalks & Walkways
• Play Areas


• Exterior Home Washing
• Roof Cleaning
• Concrete Driveways
• Sidewalks
• Patios
• Concrete, Brick & Pavement
• Gutter Cleaning
• Garage Floors


• Restaurants
• Retail Stores
• Drive-Thrus
• Storefronts
• Concrete Cleaning
• Parking Lots
• Sidewalks & Walkways
• Dumpsters / Grease


• School Playgrounds
• Sanitizing
• Slides & Swings
• Outdoor Play Areas
• Play Surfaces
• Tennis & Basketball Courts
• Concrete Areas
• Sanitizing


• Parks & Playgrounds
• Retail Stores
• Shopping Plaza’s
• Banks
• Government Buildings
• Colleges and Universities
• Medical Facilities & Hospitals
• Stadiums & Arenas
Churches & many other public areas!


A Tidal Wave Of Love John 3:16
Positive: Quality, Responsiveness
We recently in the fall had our building power wash by the professionals at Connecticut Power Washing and Roof Cleaning. The building was in need of pressure washing, the last time we had it washed was about 10 years ago so we were shopping around for prices and we decided to go with CT Power Washing. All the mildew has been completely washed off and the surfaces of the concrete have been cleaned to we are totally satisfied with the final product.

property service

It is very difficult to find a good contractor.
We hired CT Power Washing to pressure wash our home. They were on time and extremely professional.

Definitely recommend their service.

Daniel Bryan

Positive: Professionalism, Punctuality, Quality, Responsiveness, Value

I was in need of power washing for my house in North Stonington, Connecticut. CT power Washing and Roof Cleaning came highly recommended by our friends. So we hired Connecticut Pressure washing service, they washed my house on the same day of accepting the proposal. very satisfied..
We recommend their washing service.

Heinrick R.

I recently had my moms home and mine power washed, and I had my roof cleaning also done by Connecticut Power washing service, they were fast and fair in price. I highly recommend there work.

Louis Mazzarelli

Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
Outstanding and incredibly professional. Highly recommend.
Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
I hired CT Power washing and roof cleaning and soft wash service to cleaning the moss and mildew of my home and roof Mystic, Connecticut. they also wash the pavement and washed my deck as well. I am very satisfied. I recommend CT Power Washing as the local power washing comapany to go with.
Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
Hello, i recently hired Connecticut Power Washing Service and Roof Cleaning, to soft wash the outside of my home in Norwich, CT. They were very professional and fast. there work is quality. Javier even did extra work for free. they ares the local power washing service company to go with.
Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
Hello recently had my interior painted by the Painters at Ct house painters & Power washing
They where phenomenal and clean. Then they offered Free Pressure Washing Service for my home, my house after being power-wash Look brand new.
5 months ago
Positive: Professionalism, Punctuality, Responsiveness, Value
Hire CT power washing to soft wash my roof wein they Colchester Connecticut. very professional and my roof looks new after the cleaning.
Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
If you are looking to have the job done right, this is the right company, they go above and beyond to ensure customer happiness, great people to work with, fantastic pricing
Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
CT Painters were very professional from start to finish. Exterior Painting was completed with no mistakes and no complaints on my end.

Power washing in old saybrook, CT

We had our house in Old Saybrook, CT pressure washed and roof cleaning done by CT Power Washing. they were great.

Double doodles

Double doodles

Saint Thomas ...

Enjoying this fall 🍂 weather before he gets cold 🥶

Enjoying this fall 🍂 weather before he gets cold 🥶 ...

Painting exterior

Painting exterior ...

LWC Groton CT ...

Happy birthday 🎉🎊🎂🎈🎁 to my princess

Happy birthday 🎉🎊🎂🎈🎁 to my princess ...

School night ...

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Roof Cleaning Service Connecticut

Roof Cleaning

How do we clean roofs? Why is Connecticut Power Washing & roof washing & soft washing right for the job?

We carry the correct amount of insurance for this type of work. Connecticut Power Washing & roof washing & soft washing safety standards and practices are second to none. We follow OSHA guidelines while operating on a roof etc. Our staff is trained, uniformed, and educated on roof cleaning and power washing. Without the proper safety equipment on hand, we would rather lose the job than operate in an unsafe manner. You will always find at least two workers on every job, especially when cleaning a roof. We are not a “Splash and Dash Company” meaning apply the chemical and explain to the homeowner that the rain will take off the rest. Beware of those practices! Our relationship with our customers and your overall experience is vital to our future existence.  CT Power Washing & Roof Cleaning & Soft Washing works with many different realtors in the Connecticut area enhancing curb appeal by removing those unsightly black streaks. Potential buyers will turn away considering that a particular house or property on the market may need a new roof.  CT Power Washing & Roof Cleaning & Soft Washing, a professional cleaning system costs about 10% of what it cost to replace a roof.

Cleaning a roof requires proper setup.  Checking your entire property making sure windows, doors, pets, and children are secure. The safeguarding of your flowers, plants, trees, shrubs, and lawn is one of our many safety procedures carried out by our company. Proper cleaning techniques are always followed on each and every job we perform. Connecticut Power Washing & roof washing & soft washing will deliver the final results a homeowner can be proud of.  Contact us for a free estimate. We will spend the time to answer all your questions and concerns.

The roof of your property has a large effect on the overall appearance of your home or business. Black algae stains on an asphalt shingle roof can seriously detract from the curb appeal of your residence. Rust stains and organic growth on your commercial property's roof takes away from the image of your business. At CT Power Washing & Roof Cleaning & Soft Washing, our Connecticut roof cleaning contractors are here to help you revitalize the beauty of your property.

In every exterior property cleaning service, our professionals have one simple goal. We seek to provide the highest quality services possible in order to maximize customer satisfaction. When you hire us for your roof cleaning needs in Connecticut, we will bring this dedication to excellence to your task for you.

If the roof of your Connecticut home or business has become dirty and unsightly, call CT Power Washing & Roof Cleaning & Soft Washing, today. Our roof cleaning experts can restore your roofing system to its original beauty. Our polite and knowledgeable staff would be happy to take your call and to answer any questions that you may have. We can schedule your appointment today.

Roof Cleaning Services Customized to Your Needs

When you hire our Connecticut roof cleaning contractors for the task, you are making the absolute best choice for your property. Depending on the type of roof that you own and the stains that are on it, the cleaning method must be adapted in order to achieve the best looking and most rewarding results.

Because our roof cleaning contractors are adept at both soft washing and power washing in Connecticut, we can clean any stain from any roofing material in the best possible manner. We will customize our cleaning method to your particular needs. Afterward, your home or business will look it's absolute best.

Clean Black Stains from Your Shingle Roof

One of the most common complaints about the look of a home is black stains on an asphalt shingle roof. These stains are caused by algae that grow within the surface of shingles after prolonged exposure to moisture. The best way to clean black algae stains from a delicate roofing system is soft washing.

Our Connecticut roof cleaners have an immense amount of experience working with delicate roofing materials. As such, when you hire our professionals, you can rest assured knowing that your roof will be cleaned in the best manner while protecting and preserving the underlying surface. The exceptional results will speak for themselves. You will always know who to trust with your future roof cleaning needs.

Connecticut roof cleaning uses only the Asphalt Roofing Manufacturers Association (ARMA) approved method of cleaning roofs. Our process uses a sprayed chemical solution that has proven to be both effective at removing algae and safe to the surrounding environment.

Our roof cleaning solution is contained and controlled to protect your property at all times during the process. We do not use high-pressure cleaning during any part of the roof cleaning process. All roof stains will be removed by the time we leave the job. Any roof moss left behind will be dead and will fall off after a few heavy spots of rain. If you have moss or lichen and want it removed immediately we can scrape it off, but it is not recommended as it pulls granules off the shingles with the roots. We recommend that moss and lichen be left to break at the root level after it is treated.

We do not rinse the solution off because the solution is still active and continues to work hours after applied. The longer it is left on the roof the more effective it is, as a preventive measure against future growth. Not rinsing saves time and money for the homeowner as well as saves water in the process. Once the solution becomes inactive it is simply salt left behind.

The chemical solution that we use has been found by 3M Corporation and the Asphalt Roofing Manufacturers Association (ARMA) to be the most effective and safest method to combat the growth of Gloeocapsa Magma algae, Moss, and Lichen on residential roofing shingles.

Soft Washing Roof Cleaning Service Near Me Connecticut

We look forward to returning the roof of your home to its original color and condition. Call/text or email us today for a FREE ESTIMATE!! 

Frequently Asked Questions (FAQ)

What is the Black Streak on my Roof?

The most common culprit causing the black streaks on roofs is a black alga called Gloeocapsa magma. That’s right! You have organic matter growing and feeding on your roof! Over the past 30 years, this algae has become more aggressive and has migrated via spores released into the atmosphere to cooler less humid environments. It has become a fairly common sight on asphalt shingle roofs across most of the Country.

This ugly growth usually occurs on the north or west side of the house as well as the tree-shaded areas of the roof. As the algae grow and spread, it holds moisture, which accelerates its growth.

Is this Gloeocapsa magma algae dangerous to my roof?

Yes, algae growth on your roof causes several problems over time. First of all the algae is usually black in color so it absorbs the sun's rays, heats the roof surface quicker, and leads to higher cooling costs. As if that were not enough reason to have it removed, the algae on your roof are actually eating your shingles! This strain of algae feeds on the limestone used in the manufacturing of today's roof shingles.

Over time the granules protecting the surface of the shingle begin to loosen and wash off as the limestone is diminished. Algae present on roof shingles promotes other damaging biological growth such as lichens and roof moss which are even more harmful if left to grow and spread. Roof moss and lichens anchor into the shingles and spread even more quickly than algae. Moss and lichens grow up into and under the shingles and along edges causing them to lift and make the roof more prone to wind damage and leaks. This destructive growth acts like a sponge that keeps the roof damp causing even more and faster growth

Premature roof replacement could cost you many thousands of dollars. Removing the stains and growth early is your best option. Don’t wait until the entire north side of your roof is black, it may be too late and some damage to your shingles may have already been done.

How do I get rid of this destructive algae, moss, and lichen?

Professional cleaning with environmentally safe solutions and very low pressure is the best answer. Connecticut roof cleaning uses only safe, a non-pressure system for cleaning roofs. The chemicals do all the work. We systematically apply the cleaner and then wash away the algae to a clean, new looking roof. A thorough roof cleaning adds life to your shingles, and value to your home.

Will my roof look clean when roof cleaning is finished?

Your roof will look almost brand new when Connecticut roof cleaning finishes the roof cleaning job. The unsightly black streaks will all be gone from your shingles when we are finished. Any spots of heavy lichen will die and change colors but could remain visible for a week or two after cleaning. Lichen’s roots take a very strong grip on your shingle granules and need some extra time before it will release from the granules. 



Cleaning Cedar Roof

Can Natural Wood Siding be cleaned, sealed, or stained?

All-natural woods must be cleaned properly then rinsed without pressure. With over 20 years of experience with all types of wood siding in the Northeast, CT Power Washing & Roof Cleaning & Soft Washing will clean your home without damaging the wood. We offer to seal and staining services as well. Javier Santos the owner of CT Power Washing & Roof Cleaning & Soft Washing, would be happy to give you a Free Estimate! 

CT Power Washing & Roof Cleaning & Soft Washing would be happy to provide you with a FREE ESTIMATE for any of our cleaning, painting, or staining services.  We have been in business for 10 years!

Service Area:

Roof Cleaning New London County Connecticut

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Roof Cleaning Middlesex County Connecticut

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