Can I use diluted PVA to seal plaster on ceiling

Question

Hi, I asked a handyman a while ago for a quote on removing peeling paint from my bathroom ceiling and repainting it. He told me that he would scrape off the peeling paint, seal over the area with diluted PVA glue and then paint over. I am now planning to do the work myself, but I wondered whether PVA is the right thing to be sealing the plaster with - I've heard mixed reports. Will it work or not?

Adam · Accepted Answer

you would always PVA the ceiling before applying plaster so it creates a good bond. as for myself being in the trade for  years+ I sometimes recommend using masonry paint if the ceiling suffers from bad damp or mould from poor fresh air circulation. The reason I do this is because no interior paint has the strength and durability of the masonry paint and UV protection as well as all weathering conditions.

Dirk · Answer

If you dilute your paint with water mix with stick  50/50 then apply this as your first coat the plaster will suck it in let dry do top coat no need to PVA it

Robert · Answer

Yes, you can use PVA which you can seal the ceiling and then paint over it with emulsion paints provided it has been properly scraped to remove all loose material.

Ray · Answer

The preferred option is a mist coat. This is where you water down some emulsion, 3 paint to 1 water often just a plain old white, and paint that on first. This in effect works as your sealer. Due to it being watered down the paint goes a lot further than usual and is really quick and easy to apply. You also have the added benefit of it drying really quick.
Then you have the choice of using a primer. While these work well it is another cost, which is why I normally just go for the mist coat.
Or you could use a cheap emulsion as your first coat. lots of people buy a large tub of the cheap white emulsion they can find and use this as their first coat, this can be good if you are doing a lot of painting but it’s not that practical if you are painting a single wall or a small room.
Just paint with your chosen emulsion. This is another choice a lot of people make. While it’s fine and there is nothing wrong with this option you will waste paint.
Bare plaster sucks up paint, so you will use a lot of extra paint this way. That’s the main reason I prefer using a mist coat as it cuts down on paint usage.

Daniel · Answer

No that won’t really work the PVA might life some more of the paint off but you will have to sand the whole ceiling down to get rid of the residue left by the PVA. Because as soon as you put the new paint on the ceiling the PVA will activate again !! 

I would scrape back the loose paint, sand down the proud edges and paint with two good coats of paint. 

Or even just get someone to skim plaster the ceiling

Paul · Answer

You can apply a 50/50 mix and re apply until smooth to the touch

Dale · Answer

No , definitely not.  Use 50/50 Matt emulsion and water.

Andrew · Answer

Stabiliser  and fill and rub down infected area and paint as normal

Ervis · Answer

Do not use PVA. There are two methods to seal the new plaster. Firstly, you can use a mist coat of white watered-down emulsion. However, it is more preferable to use a primer or topcoat and water down the first layer by 10%.

Kyle · Answer

No need for PVA, sand down rough spots, corners and edges, get yourself a good white primer/undercoat for wall's & ceilings  (Dulux or Crown are good) give 2 coats then one top coat of emulsion.

Ronnie · Answer

Yes you can use PVA to seal the plaster then water down the paint  and apply miss coat

Can I use diluted PVA to seal plaster on ceiling

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