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Roof Cleaning Video

Black Streaks on Roof? 
Protect Your Investment with Low Pressure Roof Cleaning

Pricing | Procedure | Guarantee | Payment

Unsightly black stains or streaks on asphalt shingles are caused by a hardy type of algae called Gloeocapsa Magma.  The algae feed on the crushed limestone, cellulose, and various wood products that are used in asphalt shingles.  The unexpected result is a destructive algae infestation.  Rain worsens the condition by spreading the algae and causing black streaks on the roof.  In fact the appearance of black or green stains is the first sign that damage may be occurring.  These streaks are unattractive and can cause the shingles to fail prematurely by not allowing them to reflect heat properly.  If this biological growth has infected your roof, it should not be ignored. 

Cleaning your roof is a simple and affordable way to protect your roof and increase the life of your investment.  Shingle companies like Owens Corning and GAF, as well as the Asphalt Roofing Manufacturers Association, recommend a low pressure roof cleaning using a chemical application to restore shingles suffering from roof algae.  The cleaning is followed by a low pressure rinse.  If your shingles are still in good shape but have roof algae on them, having your roof cleaned will allow you to get the full life out of your shingles and save you thousands of dollars.  See the difference low pressure roof cleaning makes by watching the video on this page.  

The Pricing

Pricing is based on the size of your home, and how many sides are affected.  An estimate for a 3500-square-foot home is approximately $250 per side or section.  (Note that algae normally grows on the north and east sides of your roof.)  

For more information, call our office at 770-609-4046.  Our staff is trained to offer no pressure advice and answers to your questions.  If you are interested in moving forward with the service, we will schedule a day and time that is good for both of us. 

On the scheduled day, uniformed Sunshine Window Cleaning employees will arrive in a company van, introduce themselves, and verify the work that you requested.   The technician will then walk around your house and give you the firm price for the service you are requesting.  We don’t want you to have any surprises at the end; everyone will know the exact price before they begin the work.  When you agree to the price, we will get to work.

The Procedure

  • We will thoroughly rinse with water all the shrubs and plant life around your house that may be affected by the algae run off. 
  • A cleaning solution is then applied to your roof and allowed to soak for about 15 minutes to effectively kill the algae. 
  • The roof is rinsed with water.  LOW PRESSURE is used during the entire process so that nothing is damaged or harmed. 
  • After the roof is thoroughly cleaned and rinsed, we will rinse the house, shrubs, and concrete with water that may have been affected by the dirty run-off to make everything sparkle. 

Satisfaction Guarantee

We are confident that you will be satisfied with the high quality of work, and to ensure you are happy with the results we guarantee it.   We will not leave your property until you are completely satisfied, and if you’re not home during the appointment, no problem; we will return to make it right.    

See what our customers are saying.   


Sunshine Window Cleaning accepts cash, check and all credit cards (MasterCard, Visa, Discover and American Express).   Payment is due at the time of service.   

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