This is the best way to clean a roof if you have asphalt shingles.
How to clean roof shingles from the ground.
After spraying the roof with the mixture allow it to sit on the surface for 15 to 20 minutes before rinsing thoroughly with clean water.
That way you always stand on dry surface and reduce the chance of slipping.
It can also be referred to as low pressure or soft washing.
Use the sprayer to saturate a strip 3 feet high x 10 feet wide.
Start at the lower portion of the roof moving up as you clean each lower section.
Proper cleaning is an important step in roof maintenance.
This can be done either while walking the roof or some hi tech equipment i have i can actually spray it from the ground without ever getting on the roof.
One day you may notice that your roof is turning black or fungus is spreading across of it.
Some of this growth including the stains from algae spores.
But once the algicide wears off your roof hosts an all you can eat buffet for the neighborhood algae spores.
Ignore your landscape and surrounding areas which can be harmed by the bleach solution.
But of course if the roof is really bad i may have to walk the roof with a power washer but set at a very low pressure about 400 psi about 12 inches away.
How to clean roof shingles.
Spray the cleaner on a section of roof and let it sit for about 15 minutes.
Cleaning roofs is slippery work.
Access pressurewash uses what s is referred to as a non pressure roof cleaning method.