window reveal

I've recently had new double glazed uPVC windows installed, and since the old sash and case windows were so rotten they stripped out the whole frame with the rest of the windows. The old lime plaster on this wall basically fell off on its own after decades of damp/neglect by the previous...

Hello I have a plasterboard to repair above a window on the 1st floor Please see photo The plasterboard just ends on the windows. It is not screwed into anything where it touches the window. The plasterboard moves when you on push it by the window About 8 inches before the window and above...

I can't find the answer from Google. I need to ask a real person please... I'm short of space for covering retrofit internal insulation on window reveals that are attracting condensation. So I'm looking for something slimmer than PB and skim. I've read about 6mm MgO. Also Magnox. (Even after...