Vinyl siding odd drying spots and patterns

this house gets alot of sun and has some oxidation. I put about a 2% on it downstreaming and some areas have dried weird. Maybe they are drip marks from the holes or something else

What kind of soap do you use and I suggest you lower the amount you use

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I’d be surprised if you’re really getting 2% but I’d drop that in half. There’s no reason to use that high of a percentage on vinyl. You end up having to worry more about vegetation, discoloring decks, and you’ll just save money using 50% less SH.

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Let it dry for several days (4 - 5) and if they are still there go back. Pre-wet, clean with super light mix of SH and soap. I would do only a few inches of SH in a 5 gallon bucket. Dwell for a few minutes and rinse a lot. Go back in 4 to 5 days and recheck it.
This is the 5th or 6th post on this same thing this year.

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Where are you and how hot is it. What’s your housewash mix and what equipment are you using.

it was a hot day and the vinyl was hot . Today it all seem to disappear. The drip holes weren’t really dripping but they probably came from there and dried and then disappeared… idk I got a $50 tip and the guy saw it all taking place to.

Sharpe my set up is a pull behind simpson 4200 psi 4gpm. General 20% high draw downstream injector . I use a 5 gallon buck with straight 10% SH and an ounce or 2 per gallon of Elemonator.

Well, that’s a first. You’re the first person I’ve ever seen on here that is downstreaming straight SH with a 4gpm. What do you think that means?

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I’m down streaming straight 10% with .5 oz elemonator per gallon mixed in but my injector draws 10:1. So I have about .7-1% mix landing on siding. Gotta count for the degrading of SH ya know lol.

2% is kind hot for vinyl, heck .5% is fine it just takes 10 minutes to work.

Either dilute your mix or get yourself a 10:1 injector.

Are you running a 4?

I’ve found that a half ounce per gallon of elemonator is best. Two ounces per gallon is way too much.

I told him a week ago 2% hitting the house was too strong (if he’s actually getting that) and to mix 2-3 gallons of water and the rest SH. I mixed 3 gallons of water with 2 gallons of 12.5% when I had my 5.5 gpm and it only took 5 minutes for algae to turn brown.

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I am running a 4. Been saving this season for a enclosed trailer build with a hot 8 and I have the funds for it but waiting till I hit double what I need in profit as it’s the smart thing to do

You’ve done a bucket test and you’re getting .7-1% with your 4 and a 10-1 injector?

Correct. For every gallon of water drawn through the GP 3-5 gpm injector during my test way back when, I just about filled two 5 gallon buckets. That was with my soap nozzle too through the hole in the 5 gallon pail lid. I’m shocked that it’s a shocking thing ? I use about 2-3 gallons of sh per average 2500 sq/ft 2 story home.

I know the GP injectors say they are capable of a 20% pull but I’m getting just about right on 10:1

I’ll do another bucket test and get back to ya

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Who said it was shocking? I just asked you a question.

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Just took a look at the injectors on pressure tek, pressure teks responses on the reviews say that 4gpm gets a 10:1 ratio with the 3-5 gpm models. But then they comment saying it’s a 5:1 injector… idk haha

I know I use more Elemonator then I should but don’t seem to have too many rinsing/spotting issues, I like it because it makes it a bit easier for me to see where my solution is going. (insert wear glasses joke here).

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Under unrealistic lab conditions. No back pressure, on a small enough machine, you might see 5:1 draw rate from a brand new GP Hi-Draw.

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