Yep Ed,..amazing how much info there is in proper cleaning methods and yet,...there are still new guys who claim to have "read somewhere" to DS roof mix,..NOW,..where are they reading this,..or are they throwing it out there hoping for positive feedback on what seems like the easier way??,...And in this particular thread we have a guy who's done alot of work in the washing industry,..and yet he still says DS'ing is a viable method when roof cleaning. That would be like me going to the wood cleaning forum and promote 3000 PSI and rotating nozzle for proper deck cleaning,...and promote the cheapest stain I can come up with. Either way it amounts to bad info being delivered by someone who ought to know better.
Jeff