In essence, our goal as roof cleaners, is to safely and effectively clean your roof. That means kill the moss, mold, and mildew growth (which essentially a plant). For us to effectively do this, it takes chemical, Sodium Hypochlorite (SH) to be exact. (this is the part where people's eye get big, and shy away quickly) "Well wont that kill my plants!?!!" This is one of the most common questions we get, and the answer is YES! This moss and other growth you have on your roof is