In our single storey extension, I have the floor insulated and boarded. I now want to build the stud walls.
The BC said there has to be 100mm Insulation board between the rafters, ensuring there is a 50mm air gap. Also there has to be another 40mm insulation board laid across the ceiling over the rafters. Then the plaster board over the top.
Is the 40mm insulation a specialist board or just more EcoTherm board at 40mm?
The ceiling is not flat, it is vaulted. (Hope that's the right term)
I main question is, Do I have to carry out the ceiling work before I can build my walls? Or can I build them and then work around insulating and boarding the ceiling?
I wanted the timbers for the stud work in so the Electrician can run his cabling.
Many thanks for your assistance.
The BC said there has to be 100mm Insulation board between the rafters, ensuring there is a 50mm air gap. Also there has to be another 40mm insulation board laid across the ceiling over the rafters. Then the plaster board over the top.
Is the 40mm insulation a specialist board or just more EcoTherm board at 40mm?
The ceiling is not flat, it is vaulted. (Hope that's the right term)
I main question is, Do I have to carry out the ceiling work before I can build my walls? Or can I build them and then work around insulating and boarding the ceiling?
I wanted the timbers for the stud work in so the Electrician can run his cabling.
Many thanks for your assistance.