Safe & Effective
Roof Moss Treating or Cleaning done properly can be a Safe and effective way to extend the life of your roof while helping keeping your house looking in top shape. We recommend the safest gentlest option to clean-treat your roof.
Because of the fragile nature of the small rocks coating this kind of roof we offer a treatment only option with a light scrape. The scraping is only to pop off moss 1/2 inch or greater in height, the mechanical action, or what some call low pressure (pressure washing) needed to remove moss can also removes the roofing granules. We start with the light scrape, then blow off the roof, clean out the gutters, and lastly apply a Zinc Sulfate treatment to kill moss. We clean the gutters either by hand or blowing, and prefer blowing when possible as it is a little more thorough and can save you money if debris can be blown into beds and bushes- more likely when debris is dry and or you have fascia board behind the gutters. The Zinc treatment is in the form of a powder that washes down over the moss within the next few rains and completely disappears after it treats the moss. Then each time you have your gutters cleaned another zinc treatment can be applied if needed to keep the growth from coming back, without the need for scraping or blowing the moss. It takes 1-6 months for all or most of the moss to fall off and dies and shrivels up once it is washed over moss usually within a month or so. The Zinc treatment we us is the standard treatment for roofs and lasts from 6 months - 5 years, or 2-3 years for the average house, accept in the case of areas that drain directly onto the roof. The Average size roof in 2012 was $250 with an average range of $185-300 for this option but can be more if you have a large or very mossy house, with follow ups less and if done with another service like gutters very reasonable. Condos and apartments vary so call for pricing.
956 10th Ave. E Apt 306 Seattle, WA 981020
Roof scrape, blow, clean gutter, apply Zinc Treatment
Composite shingles, have a small granular sand, in a tar base. The tar base is mixed with limestone to thicken the tar, which sadly is a food for moss, mold, mildew, & Algae. Couple this with wet moist weather of the northwest for a significant portion of the year and you have perfect condition for growth that can damage your composite roof by loosening the granules that protects the roof & tar.
Light scrape for moss 1/2" or greater, blow, clean gutters, apply Zinc to kill remaining moss
* Call for a free phone estimate!
Licensed, Bonded, & Insured for your safety!
Composite, Asphalt, Fiberglass, or 3 Tab
We also do large complexes