we are renovating a victorian property, big thick stone walls, slate roof etc.
We are converting the loft and this was the area we first started on. following advise from building regs we installed kingspan type insullation in the joists and then, because we were short of head height covered this with a tri iso type multi layer foil.
I got as far as plasterboarding some rooms and then moved downstairs to do jobs in the warmth. the loft has a staircase so is linked to downstairs but we blocked up the bottom of the stairs to keep warm downstairs.
Going back upstairs to fit some heating and get on with the rooms i noticed some damp issues.
I think i have made a silly mistake and not allowed enough ventilation around the joists so condensation is building up.
although a bit peed off I just want to make sure any fix I do is the right one.
I believe a picture might help so
The rafters are 75mm thick, with another 25mm to internal tile face. The kingspan is 50mm.
I am thinking i needed to batton on the underside of the rafter, 40 mm or so, and then attach the foil stuff? I would then batton again then attach the plasterboard. Dont know why I didnt do this the first time.
Sound sensible?
We are converting the loft and this was the area we first started on. following advise from building regs we installed kingspan type insullation in the joists and then, because we were short of head height covered this with a tri iso type multi layer foil.
I got as far as plasterboarding some rooms and then moved downstairs to do jobs in the warmth. the loft has a staircase so is linked to downstairs but we blocked up the bottom of the stairs to keep warm downstairs.
Going back upstairs to fit some heating and get on with the rooms i noticed some damp issues.
I think i have made a silly mistake and not allowed enough ventilation around the joists so condensation is building up.
although a bit peed off I just want to make sure any fix I do is the right one.
I believe a picture might help so
The rafters are 75mm thick, with another 25mm to internal tile face. The kingspan is 50mm.
I am thinking i needed to batton on the underside of the rafter, 40 mm or so, and then attach the foil stuff? I would then batton again then attach the plasterboard. Dont know why I didnt do this the first time.
Sound sensible?