Bleach kills fungus on contact.
Stop roof funges.
While copper is more toxic to algae galvanized sheet metal is much less expensive.
There are three basic ways to clean your roof.
Use a chemical cleaner.
These stains will discolor your roof and damage the shingles over a period of time if left alone.
After cleaning off the roof treat the roof with a moisture resistant solution to help keep moisture off.
Use a long handled brush to scour the surface of the shingles and loosen stuck on.
Mix up your cleaning solution.
You can cut strips of zinc flashing copper and lead work too and slide them under a course of roof shingles to kill lichen and moss growing there or you could just buy these premade strips from shingle shield.
To get rid of mold and other types of growth for good it s best to use a powerful.
How to use bleach mixtures on your roof.
The premade ones are much quicker and probably neater looking.
Simply mix the bleach and water spread the mix over your roof with a mop and hose the roof off.
Bleach mixtures can injure sensitive plants.
Mold stains can form on roof shingles that are in permanent shade.
To keep the algae from coming back insert 6 inch wide strips of zinc or copper under the row of shingling closest to the roof peak leaving an inch or two of the lower edge exposed to the weather.
That way whenever it rains some of the metal molecules will wash down the roof and kill any algae trying to regain a foothold on your shingles.
Spray the entire roof thoroughly.
As long as the problem has not advanced to the point where the roof is seriously compromised a 50 50 mix of bleach and water should clear away the algae and restore the cleanliness of your shakes or shingles.
Apply a storebought or diy cleaning solution to remove the moss.
Hose off and brush all moss loose from your roof shingles.
Because it is difficult to totally protect them from the mix spray.
Power wash or brush clean advantage fast results disadvantage damages the roof shingles by breaking away the.
Re roof an expensive option.
Using a plastic pump type garden sprayer thoroughly soak the affected area with your choice of chemical.
This will be the perfect time to check on your gutters to make sure they are draining properly.
Carefully place a ladder near the area of moss.
Your current roof may well have more useful life.
Spraying the roof 1.
To keep algae from coming back once your roof is clean install a strip of copper or zinc coated sheet metal along each side of the roof just below the ridge.
Bleach is the active ingredient that kills algae on contact.
Scrub away the thickest buildup.
Wash off all.