painting new plaster

GeX

GeX

GeX

Soldato
Joined
17 Dec 2002
Posts
6,986
Location
Manchester
Have had extensive damp proof work done on internal walls. The plaster has now dried out, but I realise I'm restricted in what I can decorate it with.

It's critical that I don't form a vapour barrier on it, and only paint it with something all it to breath and let the substrate dry out properly (allowing several months for this).

Dulux do a 'Trade SuperMatt' paint, in a limited range of colours and quantities. I expected to be able to look in B&Q at their paint mixing stuff and make up a smaller amount of it, but I see B&Q don't do Dulux mixing anymore.

Crown do 'CoverMatt' which looks to be the same. I don't know where I can get this mixed though. It looks to be available in more useful tin sizes.

What other brands of paints / types would be suitable for this? Any advice on where to get paints from?
 
Johnstones JonMat Premium Contract Matt, Colour: 7,000 available.

That should do it!

Now to find a local stockist / mixing station.
 
I've found the colours I want on the Johnstones site and there's a decorator centre on my route to work, I'll pop in there tomorrow and see what's available.

Thanks all :)
 
B & M is only good for under the stairs.... Shocking stuff it is not the same.

Go to a decorator center and Dulux or Johnstones they will sort you out.
 
Went to the Johnstones decorating centre, they quoted £35 for 5L colour mixing Jonmatt / Leytex (it's £14.82 on Johnstones website) :eek:

Found somewhere else that'll mix it, £19 for 5L. Tiny bit further to drive, but considerably cheaper!
 
what plastering have you had done for it to take months to dry? Guessing it was back to brick full plaster rather then dot and dab board and a skim?
 
yep, back to brick to allow a new chemical DPC to be injected on the internal walls. The plaster is mostly dry, but it needs a breathable surface to allow any moisture left in the wall to be released. I don't expect te finish on this to be great and it may blister as moisture comes out.
 
I would personally leave it until the plaster is completely dry, or use a dehumidifier or wait for spring.
Painting damp plaster and I've done this in a previous house, it looked dry but it wasn't, creating low spots where the paint (and we pva'd/white washed first) was sucked into the plaster, no amount of further coats ever got it smooth.
 
Everyone's got their favourite brand of paint, but the key bit of information is to dilute matt paint with water and do a mist coat before painting fresh plaster.

In my opinion this is much more important than the type of paint used. I've successfully mist coated plaster with expensive matt and bog standard trade branded cheapo stuff.
 
SimonC said:
I would personally leave it until the plaster is completely dry, or use a dehumidifier or wait for spring.
Painting damp plaster and I've done this in a previous house, it looked dry but it wasn't, creating low spots where the paint (and we pva'd/white washed first) was sucked into the plaster, no amount of further coats ever got it smooth.
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The plaster is dry, but it may pull moisture from the wall as that dries. If you PVA'd yours then you did it wrong as you sealed it, it needs to be breathable. It will take several months for it to be in state where it can be decorated with anything that forms a vapour barrier, and it's not staying as bare plaster for that long.
 
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