This makes sense.  Has anyone had a problem with these "clean streaks."

I soap from the bottom up washing houses. It takes a little more soap and on most homes there wouldnt be a problem with streaking. I have seen a few homes that would streak so I try to stick with a system that I know will help avoid that.

I have talked to guys who have washed A LOT of buildings and soap top down all the time.

While roof cleaning I shoot from the gutter and top down 90% of the time.

i agree with the video

Well, for one that is my friend Mike Kreisle doing the video.
I am far from an expert on washing houses, but I know a little bit about cleaning roofs.
My thoughts on it are as follows. Water and Sodium Hypochlorite once mixed are mixed i would think, amd would evaporate pretty closely, since even 12.5 percent PURE Sodium Hypochlorite is 87.5 percent water anyway.
Ya know, I have always wanted to TRY this applying cleaning chemicals from the bottom up, but the houses I clean have then god darn bushes in da way
Like I said, I aint the best house exterior cleaner, but I wet the house wall down first, then I apply my stuff, watch it work, and I rinse it right away. One day maybe I will figure out how to apply chemical to a soffit from the bottom up maybe I will remove the soffit, stand it up, and spray it from bottom to top ?

I have a 6504 if anyone wants to try that.

With a fan that wide and a little surfactant you can apply a house mix and never get a plant wet.

I wanna be like this guy!!!!! No chit! I got him on FB! !

Mike couldve done better. Prob rushed.

Mike is also on the PWNA roof cleaning committee. I was taught by an Envirospec rep to apply and clean this way when using chem and we did see the results of doing it the opposite way. Now that we use a little SH in our soft wash mix, we find it to be less of an issue. Mike has a lot of vids, you can check them out on youtube.

Seems way over thought in my opinion. I'm not gonna debate top to bottom or bottom to top. My method is probably way different than most others here anyhow.

But I will debate the reasoning,...I don't think there is enough time for any significant or measurable amount of water to evaporate and effect the concentration of the cleaner.

I think it could be possible I suppose if it was a very hot day,...but even then,... I believe it would only affect oxidized siding and not dirty siding.

I wash from the top down,...but I also brush wash,..so I'm getting the whole house as clean as it should be and don't have to worry about "clean" streaks,...even if this guys theory is valid.

Jeff

Baltimore MD Roof Cleaning 410-482-4367 wrote:

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If you are working with chemicals like limeolene or mighty boss, I have seen the streaking happen. Good point about the evaporation Jeff.

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I'm not doubting that streaking can happen when the hose on hose off method is used,..
But the theory in the video is questionable at the least. 


Jeff