So it pays to clean your shingles as soon as you spot algae growth.
How to clean roof shingles stains.
Cleaning the roof yourself.
Cleaning the entire roof is recommended for an even appearance.
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I had to get out the pressure washer to really clean the roof but needed to use caution to not damage it.
Proper cleaning is an important step in roof maintenance.
It s great that there s chemical cleaner that can be used to remove black algea from asphalt shingles.
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.
Clean your roof on a cloudy day to prevent the cleaning solution from drying too quickly.
Discard any excess oxygen bleach solution after it has set for six hours.
You can choose to clean only the black areas of the shingles but this may leave an uneven color to the roof.
Some of this growth including the stains from algae spores.
I recently noticed black algae stains on my asphalt roof so this would be a good guide to refer to cleaning it off.
How to clean roof shingles.
After applying the cleaning agent allow it to work its magic for about 20 minutes.
Not to mention the danger of using a pressure washer on a pitched roof.
One day you may notice that your roof is turning black or fungus is spreading across of it.
If you decide to clean the roof yourself never ever use a power washer even on its lowest setting.
After clambering out onto your roof spray the asphalt shingles you wish to clean.
Do it yourself and save big bucks.
These are tough stains to completely remove as the algae is embedded deep in the shingle grit.
Using shingles that have been treated with algicide keeps the growth at bay for about 10 years thus the 10 year algae warranty.