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We have a cold north facing office room (2.2m wide by 2.2m long) which has a pitched ceiling thats 3.6m at it's peak.
The ceiling has pine cladding and under that is some pastic sheeting then insulation roll.
Looking at the heat calcs if I made the ceiling flat (say 2.4m) I would need a lot less heating.
If I used an insulated plasterboard with vapour layer would I need ventilation in the void that would created between the old pine ceiling and and the flat roof???
Thanks!
The ceiling has pine cladding and under that is some pastic sheeting then insulation roll.
Looking at the heat calcs if I made the ceiling flat (say 2.4m) I would need a lot less heating.
If I used an insulated plasterboard with vapour layer would I need ventilation in the void that would created between the old pine ceiling and and the flat roof???
Thanks!