Locally Owned EXTERIOR CLEANING SPECIALISTS IN KITSAP COUNTY

The best way to clean a roof is through 

Soft Washing, which involves applying a mix of sodium hypochlorite and water. This method kills algae, mold, and moss at the root without damaging shingles, unlike pressure washing, which should be avoided.

After chemically treating your roof it typically will last 2-3 years depending on humidity levels and shaded areas. What we recommend at Waterman Exterior Cleaning, is a biannual plan to have us sprinkle the moss powder in the spring and in the fall, it works very well to help prevent any new moss growth and is a cheaper option moving forward than doing a full  chemical roof cleaning every 2-3 years. 

Gutters should generally be cleaned at least twice a year—typically in early spring and late fall—to prevent clogs, water damage, and ice dams.

House soft Washing uses low-pressure water (<500 PSI) combined with specialized cleaning solutions to kill mold and algae on delicate surfaces, whereas pressure washing uses high-pressure water (1,500–4,000 PSI) to mechanically remove dirt from hard surfaces like concrete. Soft washing is a lot safer alternative for cleaning siding.