I probably have phrased that quite awkwardly but basically when I moved into my current property the landlady said there were a few things that needed fixing/adding to the place but since I needed to move in quickly I was happy to have them done after I was in. She was also fine with this.
She has mentioned several times that the bit where the bedroom is (which has a flat roof), needs to have some guttering added and a downpipe fitted as when it rains the water runs straight down the sides and she didn't want it to soak in over time and damage the walls. It still hasn't been done, and I can't afford to have it done myself so I am entirely dependent on her to get it sorted.
I didn't think there was any particular rush but recently I moved some furniture that was in that corner and have discovered that actually the water has caused some damage and now there is a big brown water mark, and some mould growing along the edge where the guttering should be. Obviously I will clean this as best as I can but even after that it will still look awful.
Structural stuff/guttering aside (which now is really a priority but there is really nothing I can do about that on my own) Wibu to ask her if I can take a small amount of the rent money to repaint the room with specialist paint to stop the damp coming through in the meantime? I would be totally happy to pay for this myself and have already paid for other bits in the property but I'm on benefits at the moment due to corona and I have literally no spare income, especially for expensive paint.
She is generally a good landlady and I don't want to cause any problems!