We actually clean shingle roofs on a regular basis. Shingle roofs should never be pressure cleaned as that would take years of life off the roof. Instead, this type of roofing material needs to be chemically treated to kill the algae that is discoloring it. Once the chemicals have done their job, we can simply rinse the roof clean without ever applying any pressure (thus no damage to the roof). You can see the results for yourself if you look at our before and after photos. Why not schedule your shingle roof cleaning today and be another one of our happy customers!