We have hired this company to clean windows for the past 3 years. This year, they also pointed out that we had moss growing on our roof, and that it could do damage to shingles. So in addition to a great window cleaning, they cleaned the roof, and also the gutters. As always, a thorough job, done to our satisfaction. The owner is always on site, and is very energetic, efficient, and personable. Hope to work with them again, next year!