New plaster walls

OK it says at least 4 weeks before painting (sealing) but what about hanging units on them? Will they stop drying out if there are cupboards on the walls?

And should you pva seal all romos or just bathrooms and kitchens?

Reply to
Mogga
Loading thread data ...

4 weeks? I painted 50% water/emulsion mix just 3 days later never had a problem
Reply to
Vass

Yep. As long as you use a matt finish then the surface will breathe.

Likewise behind cupboards..its enough air movement to let them dry.

Reply to
The Natural Philosopher

I waited a couple of weeks and three years later the walls are fine.

All rooms. If you don't seal the plaster, the dry plaster sucks much of the water out of the paint and your paint does not go on properly.

The sealing is to protect the paint not the wall!

Guy

-- -------------------------------------------------------------------- Guy Dawson I.T. Manager Crossflight Ltd snipped-for-privacy@crossflight.co.uk

Reply to
Guy Dawson

You can use porous paint right away, but best not to use emulsion. If you do, it may be fine, but no guarantees.

no. Best wait a few days till the worst of the damp is out though.

NT

Reply to
meow2222

No rooms at all! Never put PVA on plaster before painting; it's far worse than not treating it at all. It seals the plaster, but makes a nice non-stick layer which the paint will subsequently peel right off. Use cheap diluted-down emulsion.

David

Reply to
Lobster

Or simply dilute whatever emulsion you are using by 30% or so.

Reply to
The Natural Philosopher

delivery

formatting link
Or get it delivered for free

I'd hang on until the plaster has had at least a week to dry before hanging your cupboards.

Many people use PVA and get away with it! If you do use it, use it sparingly. PVA has two issues - (1) the particle size is larger than a typical plaster sealer, it doesn't soak in to the plaster as well, so does not "fix" the plaster as effectively. (2) Applying too much can cause problems, as it sits on the surface which can cause a number of issues when paint is applied on top.

Using a diluted first coat of paint is not the best option either. Although diluting it gets around the issue of the plaster sucking water out of the paint (causing the paint to dry too fast), paint is not as good as plaster sealer at binding the powdery plaster surface . The issue there is that this powdery layer can cause problems later on. Maybe not on your first painting, but in future re-decorations. Paint (particularly matt paint) contracts as it dries. This contraction can cause paint to crack and flake off if underlying layers have poor adhesion.

So...as you may have guessed by now..... I would recomend using plaster sealer. But only after your plaster is dry.

formatting link

Reply to
diypaint

David, you should have typed that in capital letters! DON'T PUT PVA ON BARE PLASTER IF YOU INTEND TO PAINT OVER IT!!!!!!!!!

Reply to
Mr Fuxit

So that's definitely no pva then?

Matt emulsion?

Reply to
Mogga

delivery

formatting link
Or get it delivered for free

Normal matt in kitchen & bathrooms - no.

Dulux & B&Q both do a kitchen and bathroom matt. These will withstand the higher humidity and water splashes you may have in these rooms.

Reply to
diypaint

delivery

formatting link
Or get it delivered for free

normal matt emulsion - no.

Dulux or B&Q Kitchen & Bathroom matt - yes

Reply to
diypaint

Hmmm - I've nearly always done it, and never had any problems. I've occasionally used thinned emulsion instead, and that's worked fine too. Once her ladyship changed the plan and I had to emulsion over sizing, and that worked OK as well.

Seems to me that the key is to use a very light, thin penetrating application, rather than slather on so much paint/pva/size/sealant so it skins.

Reply to
Steve Walker

delivery

formatting link
> Or get it delivered for free

for the dilution bit?

Reply to
Mogga

delivery

formatting link
>> Or get it delivered for free

delivery

formatting link
Or get it delivered for free

Use plaster sealer. With any other method (PVA or diluted paint) you may get away with it, you may not.

Reply to
diypaint

delivery

formatting link
> >> Or get it delivered for free

delivery

formatting link
> Or get it delivered for free

We asked in B&Q for it and they don't even sell their own. Someone else was there looking for it too. They recommended emulsion We went to focus and they don't stock it either. They recommended PVA.

Reply to
Mogga

You might find it in a specialist decorators supplier. However, most decorators use cheap brilliant white emulsion, thinned (or don't bother preparing the plaster at all, and don't care that the paint will flake off in a few years).

Reply to
Andrew Gabriel

delivery

formatting link
>> >> Or get it delivered for free

delivery

formatting link
>> Or get it delivered for free

delivery

formatting link
Or get it delivered for free

B&Q do sell plaster sealer! Though you may need to go to a warehouse store to find it. Go to

formatting link
and search for "plaster sealer". You'll get several hits. They stock their own brand and a dulux branded product.

Reply to
diypaint

delivery

formatting link
> Or get it delivered for free

We went to the B&Q warehouse. The largest in the are with two floors. They don't sell it. You can't buy it online but it is listed - both their own and dulux.

Reply to
Mogga

I think this is the route we'll be going... although its almost tempting to do half one way in pva and one in emulsion...

Reply to
Mogga

HomeOwnersHub website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.