I probably average about 50 gallons of 3-4% mix on that if its not too steep. I have been batch mixing and find a 35 gal tank of straight and a 35 gal mix tank works well. I load 7 or 8 gal of straight in the mix tank and top off the sh tank and go. Adjust as needed. This one was about 70 gallons of mix. A lot of loss…
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Also, I would like to add that If I were back in Tennessee I would drive to @Racer house and pay him darn good money to build out my enclosed trailer. I simply lack the organizational skills required to make anything as functional and nice as his trailer. Looks great Rick!
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Thanks Nashvillewash - the amount of mix/SH you use(d) is helpful. That roof pitch is crazy! I am in Florida and see so many companies walking on barrel tile roofs cleaning with surface cleaners.
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Thanks, Wasn’t bad for my first one.
Hey Rick, how did you handle the moss on that roof…just let the rain take it off?
If it’s just real light I do. If clumps, or a section of real heavy growth, I try to brush them off
Hey buddy can you explain me how to figure out the mixed if I’m doing a roof how muchs ratio has to be
I use a metering system, that way I can carry more SH on trailer. But if you wanted 4% I’d be about 30-35% sh and 65-70% water, if you’re batch mixing.
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Thanks @Kentucky1234 Super helpful chart. 
You’re welcome, it came from some here on the forum. So I can’t take credit for it….just passing it on.
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If you need to go cheap, get two 55 gal white translucent drums and mark them at ten gallon increments with a sharpie. Put the hudson on one and bleach in the other with a homemade proportioner. Lots of info about how to do it. You can even find a used ptfe diaphragm pump and a compressor to get a decent setup. I got lucky and found a 1/2" ptfe graco on ebay for $75. Thought I was going to have to rebuild it, but I put some soapy water into it and it spat out a 1/8" nut that was stuck in there. Good as new.
Put that stuff on a credit card and start marketing for work nonstop.
Stop! Don’t use the “M” word here 
oops…
I would say no. I average about 18 - 20 gallons of SH per roof. I just buy a 55 gal Barr of SH at my local pool supply store and they load it on my trailer. I use a 55 gallon water tank with a Hudson float. However I just batch mix on my trailer with a empty container per job and use my 7 gpm Fatboy pump for application.
what make of valve r u using and size ? thanks for info just starting again. need to build diy.
forgot to ask if using 12v / p40 type or booster pump.
1/2” GF Valve, 5.5 gpm 12v pump….much success!
