Hi, thanks for reading this,
Just boarded out loft floor for a new hobby room, want to insulate roof & sort out the 2 end walls. Got 9.5cm deep roof rafters and was thinking 50mm kingspan polystyrene (or similar) up between all the rafters leaving 45mm for ventilation between kingspan and the roof tiles, then 6mm wall board over the top inside. Cavity walls each end are brick outside / cinder block inside in the loft and have been injection insulated between the gap.
Can I glue wall board straight onto the blocks or should i timber frame it, insulate & then board on top of frame same as roof? will I need to put a moisture barrier between the kingspan and wall board on either roof or walls or between the roof tiles /walls and kingspan ?
Cheers,
Stuart
Just boarded out loft floor for a new hobby room, want to insulate roof & sort out the 2 end walls. Got 9.5cm deep roof rafters and was thinking 50mm kingspan polystyrene (or similar) up between all the rafters leaving 45mm for ventilation between kingspan and the roof tiles, then 6mm wall board over the top inside. Cavity walls each end are brick outside / cinder block inside in the loft and have been injection insulated between the gap.
Can I glue wall board straight onto the blocks or should i timber frame it, insulate & then board on top of frame same as roof? will I need to put a moisture barrier between the kingspan and wall board on either roof or walls or between the roof tiles /walls and kingspan ?
Cheers,
Stuart