Roof washing is not power washing. In fact, don't let anyone power wash your roof unless you want to take off a few rows of shingles. Pressure washing is intended for concrete and similar surfaces, not wood, clay, or asphalt shingles. And not roofing … period! Instead of a water jet, we gently coat the roof with a soft wash that slowly breaks down organic material. The solution sits for a few days to completely dissolve the contaminants. Then it, along with dirt and debris, is gently rinsed off. You'll be pleasantly surprised at the curb appeal. Your roof will also thank you (if it could) for extending its life.