It has 3 outside single skin dwarf walls. Outside is a waterproof breather and pvc cladding.
Inside though, one wall is too close to the house door to offer any battens greater than 25mm.... is no air gap gonna be catastrophic if I use 25mm insulation?
Or should I just vapour barrier and clad? In which case should vapour barrier be behind battens against the wall or in front?
The other 3, I was gonna use 2x2 inch battens to hold 25mm insulation, thus 25mm ait gap.
Would the vapour barrier go infront or behind this? Im using pvc interior cladding sheets... thinking it should be cladding, barrier then insulation/stud work?
Inside though, one wall is too close to the house door to offer any battens greater than 25mm.... is no air gap gonna be catastrophic if I use 25mm insulation?
Or should I just vapour barrier and clad? In which case should vapour barrier be behind battens against the wall or in front?
The other 3, I was gonna use 2x2 inch battens to hold 25mm insulation, thus 25mm ait gap.
Would the vapour barrier go infront or behind this? Im using pvc interior cladding sheets... thinking it should be cladding, barrier then insulation/stud work?