Do I need to mist coat a wall that was plastered 7 months ago?

[Sunny24]

Or can I just go straight in with a layer of normal paint?

Personally I’d seal it with a pva / paint mix

Absolutely mist coat I'm afraid - super important step after fresh plaster to ensure the paint doesn't just flake / peel off in future

Do not use pva on it whatever you do. Water down the emulsion about 70/30 and slap that on and then paint as normal.

Ah ok. I thought I could get away with it as it would have dried out 😄

Its not about drying out. It's about sealing the surface so the paint adheres well.

We’ve just had a load of plastering done. The plasterer said we could use Leystone paint from B&Q as a mist coat - but just use it straight from the tub. It’s called super opaque paint or something?

100% mist coat it

If not too late!

100 % mist coat, and consider a paint sprayer, lots of masking up but you can paint an entire room in 15 minutes, which when you might need to do three coats is way quicker.

Not too late! 😁

@Sunny24 the paint spiders recommended I think is this Leyland paint, you can get it from B&Q or Screwfix.

Don't water it down, goes straight on the wall full strength. You will be amazed at how well it covers with just one coat. I have been using this stuff for years on brand new plaster or as a base coat to go over darker paints. I like to decorate.

As it is a trade paint in only comes in massive heavy tubs but honestly it is incredible. I use it for ceilings too.

https://www.diy.com/departments/leyland-trade-super-latex-white-matt-emulsion-paint-15l/1698013_BQ.prd

Personally I'd always seal with Zinser Gards, then prime before painting.