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crystalclean wrote:

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has ayone seen this stuff used or used it?

a lot of people say its good stuff and a lot of people dont like it at all takes a long time to work. would like some feed back. people keep telling me they want to use green materials and i try explain our process but they dont like the chlorine. i try to tell them our process and how it works but you know how some of these people are very hard headed and think they know everything.

 

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 All these spray and let the rain clean the roof cleaners operate on the principle that a dead plant will simply wash away, given enough time. But what do you do if a roof is under trees, LOL  The trees will stop the force of the rain. ANYTHING that will kill the algae growing on a roof will work, given enough time. Often, it can take 2 to even 3 sprays to clean a roof this way. I once sprayed nearly a whole block of roofs with Round Up once, just for chits and giggles. About 75 percent did clean up, but it took nearly a year! I have a friend who sprays them with Rock Salt, and he swears by it.

Remember ANY plant killer will work, and if a surfactant is added, it will work even better. Citra Shield sounds like some kind of biocide, maybe a Quat. My customers want instant roof cleaning results, or I am not getting paid!