We did a 5500 square foot moderately stained roof in less than two hours Tuesday.
Even I was impressed.
We cut down the mix to a quarter sodium hypochlorite (we usually have to go at least a third if not half) so we used about 15 gallons for 60 gallons of mix and it cleaned like crazy. We had hardly any touchups which saved a ton of time.
It was a neighborhood of old people and not only did we not get the usual complaint about the smell, but immediately got one job off of it and expect to do a few more in that area.
I think I’m sold.