Painting over sized new skim

adorableade · Post by **adorableade** » Tue Mar 01, 2022 1:27 pm

Hi,

I have a new wall in the room dry lined and skimmed. I sized it for lining paper but have now decided just to paint rather than paper. Can I just mist coat as usual the sized wall?

Tom d'Angler · Post by **Tom d'Angler** » Wed Mar 02, 2022 6:27 am

Emulsion can react to wallpaper paste causing it to "craze" (fine hairline cracks in the paint) so you need to prime the wall first with a coat of Zinsser Gardz. If it's just one wall, a 1 ltr tin of Gardz should be enough. It's very runny so take your time otherwise it'll spray everywhere off the roller.