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Yellow stains after softwashing


1980al

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Hi folks

Has anyone had an issue post softwash with faint yellow staining on the render?

I've done several houses to date and never had any issues until this one . My gut is telling me I've not rinsed enough ! Just wondering if anyone on here can advise. 

Thank you

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56 minutes ago, 1980al said:

Hi folks

Has anyone had an issue post softwash with faint yellow staining on the render?

I've done several houses to date and never had any issues until this one . My gut is telling me I've not rinsed enough ! Just wondering if anyone on here can advise. 

Thank you

Just the bleach being a bit strong .

Should go after an hour or 2.

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Never had that effect on render ?.. it will on white plastics but will revert back over a few hours , are you shore it’s not different layers of paint worn through and you are seeing the previous layer of paint ? 

If you haven’t rinsed enough when it dries there will be white salt marks or lines or evan crystals but I doubt it’s that , 15% strength hypo won’t affect the colour  of render in my experience . 

Edited by Pjj
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3 minutes ago, Pjj said:

Never had that effect on render ?.. it will on white plastics but will revert back over a few hours , are you shore it’s not different layers of paint worn through and you are seeing the previous layer of paint ? 

If you haven’t rinsed enough when it dries there will be white salt marks or lines or evan crystals but I doubt it’s that , 15% strength hypo won’t affect the colour  of render in my experience . 

I honestly don't know what it is, the majority of the house looks great just the odd kinda yellow patch here and there, I'll add pictures shortly.

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Anyway to remove these white salt marks or lines @pjj ? Had a render clean today with bricks underneath and the bricks had milky streaks running down them. I soaked them before and after as well but they were still there, guessing it’s effervescence 🤦‍♂️

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6 minutes ago, JBC said:

Anyway to remove these white salt marks or lines @pjj ? Had a render clean today with bricks underneath and the bricks had milky streaks running down them. I soaked them before and after as well but they were still there, guessing it’s effervescence 🤦‍♂️

You mean effloressence and it is a nightmare to get rid of

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Thanks @Dave B spelling was never my strong suit.

A nightmare then? How would one get rid of it? It has been wet all day here, so I thought a dry scrub with a stiff brush on a warm day might budge it. I am gutter vaccing a neighbour's house aoon so hoping to fix it then. Thanks 

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1 hour ago, JBC said:

Anyway to remove these white salt marks or lines @pjj ? Had a render clean today with bricks underneath and the bricks had milky streaks running down them. I soaked them before and after as well but they were still there, guessing it’s effervescence 🤦‍♂️

Muriatic acid or hydrochloric acid will remove the salt but be careful.

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1 hour ago, JBC said:

Anyway to remove these white salt marks or lines @pjj ? Had a render clean today with bricks underneath and the bricks had milky streaks running down them. I soaked them before and after as well but they were still there, guessing it’s effervescence 🤦‍♂️

If it’s salt marks from soft washing it will come off with a light scrub and a good rinse , if it’s effervescence that’s a whole different ball game , I have always turned jobs like that down as I have seen several peoples attempts to remove it and they have made it 10x worse 😂😂😂😂

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Thanks for the replies lads 👍 customer hasnt mentioned anything and I could just be being pedantic.

Hopefully if it does need removal its just salt from softwashing. Will keep you updated 😅

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