Most roof cleaning products require at least 20 minutes for it to absorb into the moss.
Bleach on tile roof.
Using a slightly higher psi start rinsing the treatment off your roof with clean water.
Oxygen bleach however will kill the moss without harming your roof.
Direct the spray at the top of the ridge and spray downward so that the treatment runs off the roof taking moss lichen and dirt along with it.
Rent or buy a pressure washer and clean your tile roof using a solution of 1 percent household bleach to water.
The algae will wash away during subsequent rainstorms and moss will eventually loosen to the point where it can be removed with a leaf blower.
The best way add some liquid dish soap to the mix to help the sh stick to the roof for more than one second.
As before start at one end and work your way to the other.
Many roof cleaning contractors who use chlorine bleach will mix up their own homemade formulas.
Rent or buy a pressure washer and clean your tile roof using a solution of 1 percent household bleach to water.
What bleach does to your roof.
Moss and algae breakdown these protective layers shortening the lifespan of your roof.
Operate your pressure washer at 1 200 psi and keep the nozzle at least one foot if you find mold growing on roof rafters or on the underside of.
Its recommended anyone cleaning moss off a roof should do it on a cloudy day.
They mix chlorine bleach with an array of varied chemicals such as phosphates dish detergents laundry detergents assorted surfactants and oder masking scents to hide the smell from you of the main ingredient bleach.
You can go into any pool supply and ask for a gallon of shock for about 4 00 per gallon.
Wind sunlight water etc.
The reason you shouldn t use bleach to remove moss from your roof has to do with the composition of your shingles.
Assume the solution will immediately remove the growth from your roof and apply the solution again.
Chlorine bleach also known as sodium hypochlorite or sh is not meant to be a roof cleaning chemical because it kills surface algae but can not penetrate the roof shingle granules to remove black mold root structures.
And no walmart does not sell this or the big box stores.
This is just a heavy duty version of household bleach.
Wet plants and shrubbery thoroughly with plain water before covering them with plastic then rinse them again after using the bleach solution on your roof.
It is this very oil tar and asphalt which protect your shingles from the elements.
Which is exactly why you want to remove moss in.
Roof stains return in as few as 9 months and the roof mold is worse than before.
Your shingles are made of a fiberglass mat that is covered with protective oils tar and asphalt.
According to tim carter author of the nationally syndicated column ask the builder bleach will kill the moss growing on your roof.