The reason you shouldn t use bleach to remove moss from your roof has to do with the composition of your shingles.
Oxygen bleach painted metal roof.
It is my experiment on the black mold on my truck s roof.
When applying the spray to the shingles spray the bleach and water mixture so that it flows down the roof rather than up.
Chemically oxi clean is sodium percarbonate hydrogen peroxide bonded with natural soda ash gets activated by contact with water.
Your shingles are made of a fiberglass mat that is covered with protective oils tar and asphalt.
Ox roof cleaners are color safe user safe environmentally safe and an excellent deodorizer to let your roof be clean and algae free.
The oxygen breaks down organic stains taking your roof back to its original color.
The chalky oxidation can be washed off leaving a clean but dull and unprotected metal roof.
What bleach does to your roof.
Allow the oxygen bleach to sit on the roof for about 20.
Roof cleaning powered by oxygen release from sodium percarbonate solid hydrogen peroxide often called oxygen bleach although it contains no bleach water activated roof wash ox is hydrogen peroxide based oxygen roof mold and algae cleaner that cleans using the power of oxygen for roof mold stain removal.
Wet down the roof with plain water from the garden hose.
I tried walmart bleach since it was.
Follow this by spraying another coat of the oxy bleach onto the darker stains.
Everbrite will bring out the color and luster of the metal roof.
This releases the byproducts of oxygen water and soda ash that are non toxic and biodegradable.
Then everbrite clear protective coating is applied to restore and protect the metal.
Apply one coating of oxygen bleach to the darkest stained areas first then coat the entire shingled surface with the spray.
It s also not uncommon for painted metal roofs to show more dirt on their surface than unpainted metal roofs and for painted roofs to be more difficult to clean.
Do this at your own risk.
It is this very oil tar and asphalt which protect your shingles from the elements.
Painted metal roofs come with a baked on factory finish and you can re coat these as well as paint bare metal roofing with acrylic latex paint.
I was worried about bleach harming the rubber washers on the screws that hold the roof on.
Spray a generous coating of the oxygen bleach mixture onto the roof immediately.