[jeffex11]

I was told of a formula for roof cleaning that needed 9% bleach + soap for the best spray and rinse action. The applesauce formula is simular so I need 12 % to start with to make it happen. I have done some roofs with 6% ( I get mine at food lion too) and vinyl brite and made money but I had to hit the roof with the pressure washer a little too hard for my taste. I backed the nozzel way off the shingles but I still need more power from the cleaner to go after more of this work. Yesterday I powerwashed a house and across the street there were at least 10 houses with black stains on the roof facing north. the home depot outdoor bleach has a sufficant in it as well as bleach. It is expensive but I can mix it 3parts water to 1 part and it is effective so I used 1/2 a gallon to do this house. I bought it for conveinence.