Roof Cleaning Olney MD – FAQ


Q. What are the stains actually up on your roof?

  1. Most people will tell you it’s all from the trees, possibly from planes, and leaf stains. But, all of these assumptions are wrong. The ugly black streaks are blue-green algae known as Gloeocapsa Magma that is spread by airborne spores. These spores attack the lime that your shingles are made from.

Q. What is the best way to clean this Gloeocapsa Magma?

  1. The absolute best way to clean an Asphalt roof and the only process that ARMA (Asphalt Roofing Manufacturers Association) Suggests is our no pressure roof cleaning solution process. We use a specially formulated chemical combination to kill all the algae without the use of a pressure washer at all.

Q. Will the chemical kill or at least damage our plants, grass, etc?

  1. Our roof cleaning technicians always work in teams of two or more for safety and the wellbeing of your home and plants. While one technician is up cleaning the roof the ground man ensures the safety of cleaner and landscaping, by using a ladder stand offs, and copious amounts of water

Q. How long with this clean last?

  1. While every roof is different we can comfortably say that after we clean your roof it will stay clean for a minimum of 3 years without any visible mold growth.

The picture of the roof below was a roof we cleaned in Olney MD. It shows the cleaning process right after we sprayed it. The lighter portion is the bacteria growth dying. 

Cleaning Roof Olney MD

Midway through a roof clean in Olney MD








For a fraction of the cost of a roof replacement, we can clean your roof with no pressure, keeping your home looking great and protecting the integrity of your roof.

The average cost of a roof replacement in Olney is in the 10’s of $1,000’s while the average cost to clean a roof in Olney is under $1,000. Give your roof a second chance and give us a call today. 301-949-8000


Visit for your free estimate.