Are you looking for the best Pressure Cleaning in Thornleigh? Then visit Clean Slate NSW. We provide professional high pressure cleaning and exterior cleaning across Sydney’s Upper North Shore and Hills District. Our services include: Concrete and driveway cleaning – deep surface restoration, Exterior window cleaning – clear, streak-free finish, House washing, Surface cleaning, Paths and walkways, Patios and entertaining areas, Fence cleaning, Back garden and ground area cleaning. Using commercial-grade equipment and safe cleaning solutions, we remove dirt, mould, algae, oil stains and built-up grime. For residential and commercial customers, we handle all your outdoor cleaning needs with proven techniques and fully insured service.