Home DIY

I might be reading this wrong because I'm not able to closely examine the wall but it looks as if it was plastered and painted too soon without allowing the plaster to dry properly (that should be 6 months). This is not uncommon these days!

That should allow you to get a scraper with a sharp blade and take all that paint off very easily. Depending on your skill set you will have to fill some little gouges after that process but you should have a plastered wall which you can roll with emulsion, probably water down the first coat as per manufacturers instructions or use Gardz. I would remove the cupboard door and tape plastic over the cupboard while you do this job.

If the paint doesn't scrape off easily you will need to remove the loose stuff and fill with something like TX110 (Toupret) or easifill. I prefer TX110. When you fill it let it dry a little then feather the edges into the wall with a sponge to avoid having to sand too much. It helps a lot if you then use Gardz to stop the filler flashing under the emulsion. It does take some skill to stop this damage showing. I like to line walls like this for clients that want a really fine finish.

I would probably try to repair it this way as you have hopefully fixed the reason it was a problem. If however you have problem with the new paint you'll probably need to paint this wall with an oil based damp resisting paint. I wouldn't go down that route unless you have to because it can complicate things and it's unpleasant to work with especially if you are sensitive to volatile organic compounds.