Roof Cleaning is the process of removing algae, mold, mildew, lichen and moss from roofs.
Also cleaning oxidation off metal roofs. Cleaning can extend the duration of roof’s ability to function.
The U.S. based Asphalt Roofing Manufacturers’ Association specifies Soft wash Chemical Roof cleaning solution, without the use of pressure washer, to remove algae from shingle / tile roof. ARMA discourages the use of pressure washer, flat-surface cleaner or any other mechanical device to clean shingle / tile roof. Safely , Effective soft wash chemical cleaning cannot be achieved with pressure washing, the Venturi device (downstreaming) cannot achieve sufficient strength solution to kill the organisms