Your roof takes a beating all year long between pouring rain, heavy snow, falling debris and the heat caused by sunlight.  Humid summer conditions provide the perfect environment for both moss and algae. Moss can be seen as fuzzy green growth and the black streaking is algae.  The limestone filler in asphalt shingles feeds algae and can reduce the life expectancy of your roof. Left untreated, the black streaks will hold moister longer, allowing lichen and moss to grow, leading to early shingle failure over time. Let the professionals at 616 Window Cleaning wash your roof at a fraction of the cost of replacing it.  We will treat and wash your roof using a soft wash system, which falls in line with shingle manufacturers suggestion.