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You are literally in @PjjcountryHi 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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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. fwiwYes it’s red algi ,needs softwashing before painting, do you have any experience of using hypo ?...
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 waterI 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 ?.I have used it in a portable water fed pole system , diluted down to remove algae and stains from walls .