rob85

Apparently I haven't accounted for the sill of the door which gives me a bit more breathing room, It still seems inadequate though. If I went 80mm pir, 50mm screed and 20mm wundertherm would that be significantly better than 100mm pir and 50mm screed?

I've messed up and set the block and beam too high, I now only have 150mm to the top of the bi-fold reveal and am concerned that a ufh system will leave the room permanently freezing. The back wall is only 6.66m and 3m of that is Bi fold doors but space is tight and a radiator will really make the modest dining section too small. We wanted a tiled finish, so allowing 20mm for that I've got 130mm for pir and screed; Is that a bad idea or will the room be ok? I don't want to freezing every time we sit down to eat.