Because so many newcomers have asked me for a simple "quick and dirty" mix to clean shingle roofs, here it is.
This mix is for 100 gallons total.
You need 68 gallons of water
30 gallons Liquid Sodium Hypochlorite `12.5%
1 - 44 ounce Bottle Original Scent Liquid Gain Dishsoap.
Up to 3 - 44 ounce bottles of Gain may be added for additional cling on steep shingle roofs, and/or help in masking the Chlorine Smell.
If you have any questions, post them here, and I will answer them.
I can always be found here for one on one roof cleaning training http://roofcleaninginstitute.org/