Did y’all read the same thing I read ? Looks clear as day to me ha
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I clean second and third story brick like this frequently, from the ground with 4-5% applied via 12v and shooter tip to rinse. Remove the injector for maximum flow. I did one today that took 5 applications but it came clean. You could get away with way less chemical if you could get closer though. I cant speak for the limestone. I hear it’s a different animal.
Ps: don’t pre wet. Just keep applying until it’s almost gone. Then rinse.
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I made have to turn this job down,
I used xjet no orifice,and used direct pressure it is going to take forever,
No “detergent” is going to clean those white caps fully.
Very porous material.
You need to get up close an personal with them.
Bust out the old el’ turbo nozzle and go to town.
Just be mindful and careful.
A stronger mix is needed. I know you didn’t try the spray pack, but I think it would have worked. I’ve done whole walls this way.
High pressure with a turbo nozzle will work, but it “might” damage the limestone, then you’re in trouble. I’ve done it in the past and the damage is seen afterwards, like when a lance has done a driveway - the mould comes back in channels “cut” by the high pressure.
Either way, you don’t have a 12v or a lift.
Some jobs you have to walk away and learn from.
That’s the point of the test spot after all?
…can I go back with the 50/50 and hit that limestone? Can I? Can I? 
I will try it,I had it with me, just didnt think of it,I found a lift
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Jerry, I’ve tried to refrain from saying much on this post because you were getting more advice than most could assimilate. Most of it not even close. I told you it would take a few hits with direct applied and sometimes it takes a lot more like @Harold said, sometimes it’s 5-6 or more. @Harold probably deals with this almost daily, because of where he’s located. Once you see it’s working at all, then you need to keep hitting with about 5-10min in between until its gone. Don’t rinse until it’s 99% gone. I’d had commercial buildings where I’ve hit 7-8 times. The school Grizz and I did a few weeks ago, where he got burned, took about 4-5 with 50% and it wasn’t nearly as bad. You can go back with a pump sprayer but you’re going to be there a month doing it like that. You need to hit it liberally. Get a 12V, a simple one will work. None of my business, but what you should be charging for this job, will buy at least 1/2 dozen 12v systems. Now you’re discouraged but you went to a gunfight with a pen knife. Get a 12v or some type of direct app system and do it right. Don’t get near that sucker with a turbo nozzle. Between the limestone and 100 year old mortar joints that’s an accident waiting to happen.
By the way, you need to have someone keeping those stained glassed windows watered down. You etch those things, getting the stain off going to be the least of your worries.
PS: Take that xjet and have your wife hide it where you can never find it again.
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I hate that xjet, my j-rod works way better and also I am going to buy a 12-volt roof pump and go back and try again I hate to turn it down,thanks so much
If your careful and know how to handle a tool like a turbo nozzle its fine.
If you dont have any experience using the proper tools, then yes you can do damage with using pressure.
But if your also inexperienced, you could do some serious damage spraying straight 50/50 mix on structures multiple times.
Don’t disagree, but that job isn’t the place for a turbo. Especially if you’re inexperienced.
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An x-jet is a chemical injector, a j-rod is just nozzle holder.
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My j rod holder shoots soap way better than the X jet with more height, plus X jet has a lot of overspray,
I think thats what this comes down to is experience.
Alot of guys went “soft” with this softwashing phenomenon.
Yes, 90% of washing now is low pressure.
But they still make the tools for a reason.
I break out the turbo nozzle when needed and its been a well used tool for the last 11 years.
Saw some guy last season using a 12v on a three foot cement block retaining wall in the front yard of a house. Watched him for about 15 min apply 3 layers of SH with grass and flowers everywhere. Not sure what the outcome was because I didnt stay, but I would have been done and cleaned that wall in about 3 min with a turbo nozzle.
I guess its all preference…
TNHTW TNHAOTW.
Stupid robot thing keeps saying body unclear. How do @Infinity and others type abbreviations?
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Helps if you quote the person. Then there’s no minimum character count or whatever.
Amazingly, I knew exactly what you meant 
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You must have misread @Racer (Rick)
The pump sprayer was only to find the right mix. The 12v system to apply.
That’s what I’ve said from the start 
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LOL, you or I neither would be testing that stain. Strong is the operative word.
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Are you just talking about the m5 twist nozzle or did you modify it? Sorry sounded like you were comparing an x-jet to a nozzle holder lol.
No the m5,i am going to roof pump,that’s crazy to have to carry bucket,the over spray is what discouraged me,
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