The Roof Cleaning Institute Of America Training & Certification Forum
"Find A Certified Roof Cleaner Directory"

It has always been  my position that the more forums you join and belong to, the better your chances are of learning things to help you in the cleaning business.

The PWRA is run by my old friend Thad Eckoff, and is a literal wealth of helpful information for those in the roof and exterior cleaning business.

I suggest all RCIA Members check them out. They have a lot to offer

http://pressurewashingresource.org/