Along the Gold Coast bluffs above Hempstead Harbor, the grand estate style homes and tree lined streets near the historic clock tower and duck pond face constant moisture from the harbor air. Salt spray, shade from mature oaks, and humid mornings rolling off the water leave siding, brick facades, and roofs coated in algae and grime. Homeowners near Roslyn Village and East Hills rely on Power Washing and Exterior Cleaning to keep these stately properties looking as sharp as the neighborhood itself.