hi there,
I'm putting 50mm of kingspan tp10 between the 8x2 rafters, 18mm ply ontop of the rafters then 100mm of kingspan tr27 on top of that.
Confused as to where the Vapour control barrier should go. I guess on the underside of the tp10 between the joists. The only type of VPC that would work properly in this setup would be the tar backed foil self adhesive stuff!
Any thoughts anyone?
I'm putting 50mm of kingspan tp10 between the 8x2 rafters, 18mm ply ontop of the rafters then 100mm of kingspan tr27 on top of that.
Confused as to where the Vapour control barrier should go. I guess on the underside of the tp10 between the joists. The only type of VPC that would work properly in this setup would be the tar backed foil self adhesive stuff!
Any thoughts anyone?