Local, family-owned business in south King County and north Pierce County Washington. Our services include: roof cleaning, moss treatment, gutter cleaning, pressure washing, window cleaning, and house washing. In the fall and winter, we install Christmas lights. When you’re tired of looking at a stained home, streaky windows, and gutters full of debris, call the experts at BLK Diamond Exterior Solutions. Whether you’re looking for pressure washing, window cleaning or roof cleaning, we can help. Exterior cleaning is our specialty, and our mission is simple — to help home and business owners feel proud of how good their property looks. We offer a 100% satisfaction guarantee on all of our services which makes investing in your property’s appearance risk-free.