Thanks, Owain. I've just measured this, it seems this kind of insulation and plasterboard combo is just a bit too thick and will get in the way of the borrowed light glass above the door.
Do you know of any other materials that are thinner?
Hi,
We live in the top floor of a flat roof flat. In the winter, we have the heating on full blast all the time but heat still escapes (we even changed the radiators for extra heat).
Please can you let me know the best way to insulate the ceiling from inside?
When we redid the...