As the winter draws in, the windows are always damp with condensation in the morning, and I have noticed that the wall paper closest to the windows is also damp and turning black in places. When I peal the wall paper back I see the plaster is also damp. I imagine this is due to the fact that when walls were last decorated the plaster was touching the windows frame, and the condensation now seeps into the plaster which makes the wall paper damp etc etc? I have also noticed that there is a sealant placed on top of the wall paper where the paper touched the windows frame to make a tidy joint I would imagine.
My question is How should the windows be correctly finished with respect to the inside of the windows where the window frame meets the wall and plaster. Many Thanks