Hi ok so:
I have a new loft conversion I have been working on, nearing completion. To maximise headroom, the flat roof section is an unvented, hybrid warm-cold roof, with insulation both above and between the joists.
Externally there is roofing felt, followed by some rigid insulation, then joists with more insulation between, followed by a vapour control membrane, then 6mm plywood and plasterboard.
The vapour control layer was done well, but I had some help getting the ceiling up and I am afraid that now there are screws piercing the vapour control layer. I assume that if they all went into the joists, this would be okay, but I am pretty sure that there are some that missed the joists when the plywood went up and, when the plasterboard went up, it was screwed to the plywood around all of its edges, so again would have missed the joists.
Have I totally screwed up my vapour control layer?
The membrane is Intello Plus, so in theory this will allow moisture out in summer. Also because of the rigid board above the joists, in a sense this is a partial warm roof.
Anyone know their stuff in this area? Everything I read when I started this said you really had to seal everything super well. I don't know how on the case I really need to be at this point, but obviously want it done right.
Cheers all
Jon
I have a new loft conversion I have been working on, nearing completion. To maximise headroom, the flat roof section is an unvented, hybrid warm-cold roof, with insulation both above and between the joists.
Externally there is roofing felt, followed by some rigid insulation, then joists with more insulation between, followed by a vapour control membrane, then 6mm plywood and plasterboard.
The vapour control layer was done well, but I had some help getting the ceiling up and I am afraid that now there are screws piercing the vapour control layer. I assume that if they all went into the joists, this would be okay, but I am pretty sure that there are some that missed the joists when the plywood went up and, when the plasterboard went up, it was screwed to the plywood around all of its edges, so again would have missed the joists.
Have I totally screwed up my vapour control layer?
The membrane is Intello Plus, so in theory this will allow moisture out in summer. Also because of the rigid board above the joists, in a sense this is a partial warm roof.
Anyone know their stuff in this area? Everything I read when I started this said you really had to seal everything super well. I don't know how on the case I really need to be at this point, but obviously want it done right.
Cheers all
Jon