Roof cleansing is the entire process of eliminating algae,[one] mold, mildew, lichen and moss from roofs.[2] Also cleaning oxidation on steel roofs. Cleansing can increase the period of the roof's means to function.[two] Algae and other kinds of Make-up frequently variety to the north and west parts of roofs that are shaded or receive fewer sun, and will decrease a roof's existence expectancy.[2] The presence of soot, Filth, or biomass can impact exactly how much sunlight is absorbed by a roof…See More