user name, may I ask how bad was your damp that you had to replace plasterboards? My rental property, an apartment in a timber-framed building, 10 yrs old, is showing a few damp-looking spots in the bedrooms, it didnt look too bad to me, I was going to repaint, but wondering now might that mask a more serious problem?
The apartment is warm, being timber-framed its easy to heat and I think what I'm seeing is caused by inside being so much warmer than the outside (external walls)
Never saw this before, it has only appeared lately