Hey Sal,.that mix would work but it would be a little weak for most contractors. You will see varying opinions on rinsing,..but many of us no longer rinse at all.
Don't get me wrong, it's good to look into your options,..but don't make it more complicated than it is,...the mix is the easy part of this business.
Jeff
-- Edited by Raystown Roof Cleaning Central PA 1-800-236-0322 on Friday 5th of December 2014 05:22:37 AM