Penetrating damp advice

[Lw95]

Hi
I live in a rented terrace, long story but no options to move and landlord isn't inclined to sort out the problem. I'm wondering if there's anything I can do myself to treat this or bodge it so it looks some kind of ok? Is there a damp proofing paint that actually works?

Im extremely house proud and this is really getting to me. I'm very miserable Pics for reference.

any advice appreciated!

 

[AC Power]

What we call the remedy here in North America is a "skim coat". It's drywall compound (AKA plaster) spread on with a trowel and hawk. Its not something most homeowners can do, but you try it. The only thing that might happen is you got to do a lot of sanding! I would "YouTube" the term "skim coat drywall". I just looked it up, and there is help that way on YouTube.

This will not repair the core problem of moisture/damp. But it will "buy you" a few years of nicer wall, and it's cheap.