Roof Moss Removal and Treatment

Our Roof Moss Removal and Treatment Process includes:

  1. We first remove the large clumps of moss with a gentle scrape of the 3 tab, composite, asphalt, fiberglass, or laminated shingles. (removing the moss that stands around a centimeter or taller)
  2. Then we blow the loose debris off the roof and eaves.
  3. We then apply the moss treatment to the roof’s surface (valleys, eaves, hips and ridges). The remaining moss will dehydrate and become brittle, eroding off the roof, making the shingles look nice again. This terminates, eliminates, and inhibits the future growth of moss and the spores for 9 months to even a few years. Averaging 1 to 2 years depending on the tree shade, exposure to the sun, and harshness of the winter weather.
  4. We then clean the gutters (Gutters cleaning is a separate charge) and tidy up the yard.
  5. This treatment will not hurt the plants or pets around the house.
  6. Once it rains you will see discoloring after about 10 days to 2 weeks and then the process is on it’s way to start the treating.
  7. Allow about 8-13 weeks from the first rain to notice that all the moss and treatment is gone and your roof shingles looks great. In the Summer months it works just as well but can take longer because of less rain.
Roof Moss Treatment

Roof Moss Treatment

*Moss removal and treatment can be done anytime of the year and in most cases should be done annually or every other year. Gutter cleaning is needed along with the moss removal and the treatment process. Late fall (November on) is a great time to schedule moss removal and the treatment since your gutters need cleaning at that time of year from the last of the leaves falling.


  1. Simply walk around your home and have an idea if you have low profile, medium, or large amounts of moss on or between the shingles.
  2. Mention if south and west sides of the roof are moss free
  3. Use the “Button” below to request a quote; on the form is where you will enter the height of your structure and square footage in the “Message” box (e.g. 2 story/2600 sq. ft.)
  4. Gutters must be cleaned after a moss treatment unless the gutters have covers
  5. We will e-mail you a detailed proposal with estimated pricing.
  6. We can then schedule the moss treatment and gutter cleaning
  7. Upon arriving at the home we will confirm pricing before starting work in person or leave a message.

*We never under any circumstances pressure wash composite shingles or an asphalt roof. We only pressure wash slight pitched metal roofs for safety reasons.

Examples of Actual Quotes:

Small one story home 800 sq. ft. 
  • Roof Moss Removal and Treatment
  • Interior gutter cleaning
  • Approx. total cost = $319-369
Average ranch 1 story home: 1,750 sq. ft.
  • Roof Moss Removal and Treatment
  • Interior gutter cleaning
  • Approx. total cost = $379-449
Average 2 story home: 2,600 sq. ft.
  • Roof Moss Removal and Treatment
  • Interior gutter cleaning
  • Approx. total cost = $439-479
 Large 2 story home: 3,900 sq. ft
  • Roof Moss Removal and Treatment
  • Interior gutter cleaning
  • Approx. total cost = $529-600


Additional charges
    • Extra zinc
    • Presidential roofing shingles
    • Steeper than a 7/12 pitch (rIse/span)
    • Zinc alternative  * It’s no extra charge (Just ask for the fish friendly alternative) It takes longer for the treatment’s effectiveness and has a little less potency. But if maintained every year it is sufficient.
    • Skylights
    • Gutter Cleaning
    • $45 to take away and remove large bags of moss, leaves, needles and debris.




Click here for a Free detailed quote by email




Clear Skies Cleaning provides many services whether it is that patch of moss on the roof that looks like a 70's shag carpet, the gutters that look like an herb garden or the dryer vent has all but the ears of a bunny trying to get out, we have you covered. When the sidewalks and driveway need pressure washing to improve your curb appeal, the windows need cleaning to enhance your feng shui energy and bring in some light, our services will make you smile and get you noticed in the neighborhood. We are dedicated to excellent customer service and are licensed, insured and pay L&I for your protection and peace of mind. Also feel free to visit inside my head, otherwise known as my infrequently updated blog." - Timothy Austin   My Personal Blog