This is the best way to clean a roof if you have asphalt shingles.
How to clean roof shingles from the ground.
Proper cleaning is an important step in roof maintenance.
Cleaning roofs is slippery work.
Spray the cleaner on a section of roof and let it sit for about 15 minutes.
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.
So it pays to clean your shingles as soon as you spot algae growth.
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.
But once the algicide wears off your roof hosts an all you can eat buffet for the neighborhood algae spores.
It can also be referred to as low pressure or soft washing.
How to clean roof shingles.
Ignore your landscape and surrounding areas which can be harmed by the bleach solution.
Start at the lower portion of the roof moving up as you clean each lower section.
Using shingles that have been treated with algicide keeps the growth at bay for about 10 years thus the 10 year algae warranty.
That way you always stand on dry surface and reduce the chance of slipping.
Use the sprayer to saturate a strip 3 feet high x 10 feet wide.
Do it yourself and save big bucks.
One day you may notice that your roof is turning black or fungus is spreading across of it.