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