Didn't water down the paint...

[BossWitch]

Have I fucked it?!

Dh and I painted a base coat of white emulsion over the new plaster in our dining room over the weekend. Dh chatting at work today and it transpires that we were meant to mix the paint with water first when putting onto new plaster. Shit. We had no idea and assumed that a cheap white paint as an undercoat would be fine. Has anyone made the same mistake and lived to tell the tale? Feel like such a twat for not googling first!

[Ragusa]

Pretty sure it will be totally fine unless it is a bathroom type paint with a vinyl-ish finish.

[ShoeJunkie]

Cheap white emulsion is likely to be fairly watered down anyway (that's why it's cheap!) so it's likely to be fine!

[BossWitch]

Just normal matt emulsion.

[AnnieAnoniMouse]

You mix the water in so that it absorbs into the plaster & the paint adheres to the plaster. Without the water the paint can be too thick and just sit on top of the plaster. Then it peels.

I'd google what the best option is now.

[PotteringAlong]

I think it will just peel off because it won't stick. You're going to need to sand it down to get the paint off and then paint it with the mist layer (I think it's called? I seem to remember lots of discussions about it!) again.

[BossWitch]

Balls.

[RatRolyPoly]

Meh, I'd chance it. As long as the plaster was good and dry that is. I'd probably leave it a few days make sure there was no immediate peeling, but after that I'd just cross fingers!

[AnnieAnoniMouse]

There are a lot of good suggestions on this page...

community.screwfix.com/threads/painting-new-plaster.90352/

I'd go with the wallpaper scraper, using masking tape first if necessary.

There would be a LOT of swearing & 🍹

[TizzyDongue]

Which paint? It may be watered enough. If it isn't it'll be soon be obvious (peeling)

[PigletJohn]

if it's difficult to scrape off, it doesn't need scraping off.

If it peels off easily, take it off.

I'd suggest a broad metal decorator's scraper.

[BossWitch]

It was a big tub of valspar Matt white. It's not as thin as other basic white I've used, pretty middling.

I really don't want to scrape it off! I think I'm going to pick at a little bit in the corner and see what happens.

[YorkshireTea86]

We painted straight on top of fresh plaster on our stairs without realizing you were meant to seal it first. It has been ok, been on 6 years and not peeled.
Won't be doing it again in the kitchen though!

[Ragusa]

Yeah i would not want to be scraping paint off a lovely new painted wall. You dont wamt gouge marks. Id leave and see how it fares.

[Ragusa]

Lovely new plastered wall that should read.

[SheRaaarghPrincessOfPower]

I had no idea you were meant to do this and the two rooms that have been replastered were done in valspar white matt - zero peeling a couple of years on.

I'd leave it and see how it goes. If it peels, then sand it, but if it's fine then why bother?

[FlaviaAlbia]

We forgot to water down cheapy B&Q emulsion after we got our kitchen plastered, the only problem it caused was that it was incredibly hard to paint on and kept coming off at the time of painting. Once it was done however, it was fine and hasn't peeled or flaked, so it's not an inevitable disaster.

That was about 8 years ago and it's been repainted a couple of times since then without problems.