AquaForce is excellent! They do great work, and it won't destroy your roof since it's a low pressure application of his cleaner. The same can be said if they power wash siding. It doesn't weather the paint, vs pressure washing which removes the top most surface of the paint. He also has cleaned my concrete walks and driveway, which makes it look white again! He is prompt, polite, hardworking and reasonable. The most recent time he did work at my house (cleaned the concrete) was 1/10/14. After seeing the quality of work, my neighbors also use him. Thanks again Henry!