Unpainted year old new Plaster

[Brian_D]

Hi,
I had my whole kitchen re-plastered (walls and ceiling) a year ago but for various reasons I never got it painted.

I now have cooking grease stains on the wall next to the hob (the food/grease splatters reach further than the glass splash back...).
I keep reading mixed things about how to treat the wall before painting and am a bit confused as to what I need to do and in which order.

I believe I need to use 2 coats of watered down matt white emulsion but is that enough to seal the grease stains? What emulsion works best for this?
If that's not enough what type of sealer do I need to use and does that get applied before the mist coats?
Oh, would I need to use a sealer on the whole kitchen to keep the final colour uniform?

Sorry for the barrage of questions, want to get it right first time!

Thanks,

Brian

 

[motorbiking]

I would wash the walls down with some soapy water where the grease is and then mix some part pva, part water and part paint in for the first coat.

 

[geraldthehamster]

PVA and painting don't mix - there used to be a sticky on this because it came up so often.

Cheers
Richard

 

[JohnD]

scrub with sugar soap, rub off with an old towel.

 

[Robbie uk]

And if after you have done as JohnD says and it still comes through use a stain block which should seal it. Only one thinned coat of a cheap contract matt is needed to mist coat the walls. Once dry, rub the walls down and fill any thing that needs it. Then start to put full coats on.

 

[Brian_D]

Thanks guys,

I'd read about PVA being bad for fresh plaster...
I definitely should have thought about sugar soap! Heading out to shops today so will pick some up and a tub of Contract Matt.

Cheers

 

[geraldthehamster]

Thanks guys,

I'd read about PVA being bad for fresh plaster...
I definitely should have thought about sugar soap! Heading out to shops today so will pick some up and a tub of Contract Matt.

Cheers

Never, ever, ever use PVA on a surface that you intend to paint. Ever. It will prevent the paint from adhering properly to the surface. PVA is only used on plaster if it is going to be skimmed.

Cheers
Richard

 

[Brian_D]

Ok so I've just washed the wall with a Sugar soap solution and can see all the food/grease splatters (in photo) however no amount of scrubbing makes these marks disappear.
Is there any way to know at this stage if all the grease had been removed? Or do I only know after painting?

Thanks!

 

[Robbie uk]

As the plaster is so thirsty and porus, you wouldn't be able to get all the grease out. You can give it a mist coat first and then see if it needs a stain block on top.