I can see where this would be very profitable in doing so. It will also some what take away from this forum but buying the book and video does not make you a certified roof cleaner. Frankie
I can see where vids could be helpful on things like different pump set-ups etc. A book would be a good referrence but we can take good notes here and skip the book. The vids would be great to see how different people get set-up and take care of business.