M&D Power Washing LLC offers Cedar shake roof cleaning services by using our soft wash process. Cedar shakes need to be cleaned and maintained by removing all algae mold and mildew. The reason why cedar shakes need to be cleaned is because they need to breathe and be free of algae. The dark mildew stains and green algae that you see on your roof will slowly start to rot and deteriorate the shakes if not removed and eliminated. Cedar shakes do not need to be stained or sealed because they need to breathe.