We have a room in our home that was converted from barn space. It is a small hall linking the barn area to the general living space. The room is heated. Above the room is a cold barn.
There are 140mm beams running across the room ceiling (highlighted blue) with wooden planks laid upon them. Below the beams is 10mm Fermacell gypsum boards. We are planning on placing 140mm mineral wool insulation between the beams.
1. Should we also place a 2nd layer of mineral wool e.g 100mm adjacent to the first, covering the beams?
2. Do we need to place something above the mineral wool, effectively sealing the mineral wool in to the ceiling. E.g. OSB boards.
3. Do we need to install a vapour barrier?
There are 140mm beams running across the room ceiling (highlighted blue) with wooden planks laid upon them. Below the beams is 10mm Fermacell gypsum boards. We are planning on placing 140mm mineral wool insulation between the beams.
1. Should we also place a 2nd layer of mineral wool e.g 100mm adjacent to the first, covering the beams?
2. Do we need to place something above the mineral wool, effectively sealing the mineral wool in to the ceiling. E.g. OSB boards.
3. Do we need to install a vapour barrier?
