Softwashing care around painted window frames

Hi would be very grateful with some advice with getting hypo on the painted window frames, I'm using 1-3 mix sometimes stronger on deep stains and wondering if I need to be careful I don't strip the paint off the window frames as I know strong bleach can , any one have any tips on what they do reference this cheers

Yes be careful it will remove paint especially at that strength , wet it down before applying hypo and after keep rinsing it to dilute/wash it away

I'm sorry to disagree with Pii but I use it at a simlar dilution all the time for conservatories,upvc,cladding,guttering.render.pebbledash,masonry etc and never had a problem. Which is counter intuitive I know because you'd expect it to damage paintwork.

Agree with Pii to pre and post wet as you would grass and plants.

Benz Blackwash is also safe , which is hypo based but at lower concentration.