If you decide to clean the roof yourself never ever use a power washer even on its lowest setting.
How to clean roof shingles stains.
Discard any excess oxygen bleach solution after it has set for six hours.
So it pays to clean your shingles as soon as you spot algae growth.
Clean your roof on a cloudy day to prevent the cleaning solution from drying too quickly.
Proper cleaning is an important step in roof maintenance.
Cleaning the roof yourself.
Do it yourself and save big bucks.
Soft wash roof cleaning how to wash your roof safely best roof wash method video link you can share of this video https youtu be owkh b0brt8 in this video.
Not to mention the danger of using a pressure washer on a pitched roof.
Cleaning the entire roof is recommended for an even appearance.
After applying the cleaning agent allow it to work its magic for about 20 minutes.
Using shingles that have been treated with algicide keeps the growth at bay for about 10 years thus the 10 year algae warranty.
It s great that there s chemical cleaner that can be used to remove black algea from asphalt shingles.
Apply the cleaning agent to the roof.
But once the algicide wears off your roof hosts an all you can eat buffet for the neighborhood algae spores.
Some of this growth including the stains from algae spores.
I had to get out the pressure washer to really clean the roof but needed to use caution to not damage it.
One day you may notice that your roof is turning black or fungus is spreading across of it.
You can choose to clean only the black areas of the shingles but this may leave an uneven color to the roof.
These are tough stains to completely remove as the algae is embedded deep in the shingle grit.
After clambering out onto your roof spray the asphalt shingles you wish to clean.
Not only is using a power washer pretty much guaranteed to void any roof warranties it can damage shingles by causing the protective coating or even the shingles themselves to come off.