How can it sound wet? It's on a chimney breast wall that backs onto my neighbour's house, so not an outside wall. It was repaired a few months ago. It's just a solid brick wall with no plaster on it, and it's not damp at all now. I just don't know if it needs special treatment when covering...
My chimney breast had severe rising damp and damp patches all around skirting board level. I found that the hearth was completely made up of soil, so I dug it all out and laid a damp proof membrane and concrete hearth.
I'm now looking to have the chimney breast replastered (well, preferably...