A Sparkling Finish Window Washers (ASF) is a family-owned and operated small business serving Northern California. ASF provides Exterior Cleaning and Maintenance Solutions for commercial and residential customers in the Bay Area and Sacramento Regions. ASF’s motto is “From Start To Finish.” ASF is a Green Certified Business. We use eco-friendly detergents and cleansers. We seek long-term relationships with all of our clients. When you invite us to your home or business, we will show you and your property respect and courtesy--always.