Softwashing is safe and effective on... Shingle, Slate, Metal & Shake Roofs. Vinyl, Wood, Aluminum, and Hardie Plank Siding. Stucco, Dryvit and EAFIS Surfaces. Driveways, Pavers and Cool Decking. Wood & Composite Decks. Wood & Vinyl Fencing. And Many, Many More Exterior Surfaces Not Listed.