Keep it Clean
The first step to roof maintenance is to keep it clean. Removing any debris, and most importantly algae and moss, is vital to prolonging the life of asphalt roofs. Following the initial cleaning a yearly cleaning is recommended.
How to Clean
http://www.asphaltroofing.org/ recommends A 50/50 mix of household chlorine bleach and water. This can be applied with a pump up sprayer. For the diy home owner, this can be an extremely dangerous task. Be sure to tie off properly and wear PPE. ProClean Power & Soft Wash takes it a few steps further with our soft wash roof cleaning solution. Bleach and water is not enough to thoroughly and effectively kill roof algae. We use a commercial grade detergent that is specifically formulated to hold the bleach to roofs and other steep surfaces, allowing adequate dwell time. Never pressure wash shingles. Blasting at them will not kill the algae and blows off the granules. ProClean uses a 100 psi roof pump and can treat most roofs from the gutter line. The detergents are left and will safely rinse off with the first rain, taking dead moss and lichen with it. The black algae streaks will dissapear just minutes after being treated. Be sure to protect vegetation on the ground by either covering or rinsing before, during and after the treatment.
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