It’s easy to forget about the roof of your home, but it is a very important part of the building. Generally, the roof doesn’t need too much attention, but every three to five years, roofs can benefit from a clean. Roof cleaning removes lichen, moss, and algae from the surface. A build-up can stain your roof and begin to damage the surface material. A periodical roof cleaning will slow the growth of mildew, and make any cracks or splits easier to spot from the ground. You will also see a reduction in the amount of moss falling into the gutters.