A couple of weeks ago we did a roof and gutter cleaning job for a client in Kirkland, Washington. We showed up and greeted the people that live at the house and then we walked around the house to double check everything was ready for us to get started on our work. We started by brushing all the moss off of the roof with hard bristle brushes that de-roots most of the alive moss, but the moss that actually damages your roof is the stuff that you cannot see because it is growing under your shingles. That is what our roof cleaning solution seen in the images below being sprayed onto the roof. After spraying down all the roof with our solution, we go around the house a second time and clean up any debris that was brushed or blown off of the roof onto the ground. Then we are all done and that is a breakdown of a professional roof cleaning.