Do these walls need replastering/reskimming?

[Elms14]

Hi,

I've just had my boiler upgraded and the old cylinder removed from the airing cupboard. I want to repurpose the airing cupboard into a linen cupboard/storage. However, the walls look water stained from the boiler being in there for many years. So question, do the walls need reskimming/replastering or are they okay to be painted over with stain blocking primer of some kind?

 

[RandomGrinch]

You could line it with some plasterboard?

 

[Winglet]

If it is completly dry now then I would just paint it.

You won't see it once you've put shelves in and your wife has stuffed it full of towels, bed linen, and clothes.

 

[tell80]

Best to remove the stained panel of plaster or plasterboard so that there's no chance of bleeding thro in the future - then replace with a piece of plasterboard.