#629 |
(This post was last modified: 24-09-2021, 12:47 AM by toomanytommytoes.)
270mm is apparently the point of diminishing returns for mineral/glass loft insulation. I think EPS boards can provide similar efficiency at much lower thickness. Currently re-insulating the space above a bedroom and we're going for 300mm of mineral wool. Job made much harder by whoever demolished the original roof as they decided it was a good idea to leave all the rubble between the joists and put the fibreglass insulation on top. Now we're half way through dragging all the rubble out of a hole in the wall small enough that you have to slide through on your belly.