Wrong undercoat on walls - how to fix it

26 Sep 2022
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United Kingdom
I got some bad advice from an overworked member of staff at a consumer DIY store. I got sold some Dulux trade solvent-based undercoat for wood and metal. Having painted this all over the walls and ceilings of a room in my house, I am realising my Farrow & Ball All White Modern Emulsion is not sticking to it.

I went back to the DIY store and they apologised and gave me a Zinsser BIN primer and sealer, saying this would allow me to coat over the Dulux and then the water based Farrow & Ball would work on top of that.

Is this good advice? What are other options?
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A light sanding might help - do you have a random orbital sander?
Use the zin excellent stuff, we renovate houses this stuff has covered so many gloss painted walls and made paint stick, Brilliant on kitchen units when you want to paint them.

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