Black Streaks on Roof

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Chemical Cleaning to Remove Black Streaking from Roofing

Gloeocapsa Magma is the scientific name for those black streaks on your roofing. Gloeocapsa is a form of algae that lives in wet humid climates. These streaks of black are not as evident in the Seattle-Tacoma region due to the majority of roofing material being of dark coloring. If your roofing substrate is light colored, it’s very probable that these stains will be found on your home.

Although, Gloeocapsa Magma is not harmful to roofing, the appearance of a home suffers tremendously. When selling a home the algae stains should be an issue that is dealt with before the home is placed up on the market. These stains are a red flag to potential home owners who may not know exactly what that black stuff is and whether or not it’s harmful to the roofing.

Soft wash roof cleaning with chemicals is a superior method of removing Gloeocapsa. This method of roof cleaning gets rid of these unsightly black streaks while keeping the integrity of the roofing intact. Power washing is not as effective at eliminating Gloeocapsa. It is also very damaging to roofing shingles. Read more here………….

In the picture to the left, a chemical solution is sprayed on the roof. Each chemical in the mix does a certain job. Within 25 minutes, the picture to the right shows the roof stains are almost completely gone. The mix continues to work on the stains and streaks until the next day of rain. After the roofs first shower, the roof is looking its best.

Going from being a white roof covered in black to being a white roof again has strong selling value for a home. Soft Washing is a great way to safely and effectively remove black streaks from your roof in Seattle. Whether your home is up on the market or you just don’t like coming home to a dirty roof, consider chemical cleaning when hiring a roof cleaning contractor.



Roof Cleaning Bellevue

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Roof Cleaning in Bellevue, Washington

Bellevue has some of the steepest and highest roofs in the area. Roof Cleaning in Bellevue are practiced in an  similar manner to any other roof cleaning in our area , however due to the steepness of the roof slopes, certain safety precautions need to take place. These precautions are:

  • Safety Monitors: One man is constantly looking out for his partner from the ground, while another performs the actual work.
  • Safety Straps in multiple locations: based on our experience  a home in Bellevue requires 3 straps or more. This can drive up the cost on a roof cleaning in Bellevue, by up to $150 dollars as compared to other areas.
  • The volume of cedar roofs is much higher. A big percent of our jobs in the area are cedar shake cleanings. Cedar shake cleanings require safety precautions not found on asphalt shingles.

The residents of Bellevue and the eastside take great care of their homes and are savvy when it comes to making decisions on the right contractors to hire. Based on our professionalism and track record for completing jobs on time and on budget we have received an enormous amount of referrals from the area.  We hope to continue to be able to serve the residents of bellevue and look forward to many more years of visting this great city and its wonderful residents.