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Advice on this required please


Ash Baker

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Ash Baker

Hi all , I run a small property maintenance business , this house has got this red staining from render, it’s got to be painted for customer but I’m not happy about painting over this?

is it an algae or mineral soaking out?

can this be treated with hypo prior to paint?

thanks 

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5 minutes ago, Ash Baker said:

Hi all , I run a small property maintenance business , this house has got this red staining from render, it’s got to be painted for customer but I’m not happy about painting over this?

is it an algae or mineral soaking out?

can this be treated with hypo prior to paint?

thanks 

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You are literally in @Pjjcountry

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scottish cleaning service

Its probably near the coast where red alga thrives. You would need to kill the spores or it would just come through the paint later on. 😉

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Ash Baker

Thanks matey, yes that’s what I thought?

what chemicals would be suggest to put on this wall?

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scottish cleaning service
2 minutes ago, Pjj said:

Yes it’s red algi ,needs softwashing before painting, do you have any experience of using hypo ?...

I don't think he does, so better to go on a course because I don't give out advice in case they get injured. fwiw

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Ash Baker

I have used it in a portable water fed pole system , diluted down to remove algae and stains from walls .

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6 minutes ago, Ash Baker said:

I have used it in a portable water fed pole system , diluted down to remove algae and stains from walls .

Ok wet the walls down with the garden hose first do one wall at a time , apply the hypo mix either by spray or through a brush leave for up to 20 muinits re apply and agitate with   the brush rinse down with tap water and keep  re applying hypo mix and leave for up to 20  muinits , keep doing this until it’s all gone , make sure you use the appropriate ppe and wet any plants down before ,during and after application , to finish off rinse the whole area down with copious amounts of water 

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16 minutes ago, Ash Baker said:

I have used it in a portable water fed pole system , diluted down to remove algae and stains from walls .

Just noticed you are in Cornwall where abouts  are you ?.

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