Hi,
I'm trying to decide on the best way to insulate and line a shed in order to make it a bit more habitable.
Having searched the Google archives, it seems that the best approach is to line with a DPM, followed by suitable insulation, and then foil backed plasterboard. Being relatively inexperience with such matters, I do however have a few questions.
1) What sort of DPM is best? Is polythene sheeting suitable, or would something breathable (builder's paper?) be required?2) How thorough does the coverage of the DPM need to be? Do joints in the DPM need to be sealed? Is it acceptable to staple gun it into place? Should it cover the batons, or just be attached between them? How should I handle anywhere that something needs to come through the DPM, e.g. armoured cable.
3) The intention is to lay plywood to strengthen and stiffen the floor. Should a DPM be used below this too?4) What thickness of plasterboard is best?
5) Sockets and lighting will be added. Will the DPM provide sufficient protection that flush mounting dry lining fittings can be used?6) What the best way to run cabling past the batons? The best solution that I've come up with is to remove a section of the plasterboard wherever a cable needs to pass a baton (within the permissible cable routes), and then plaster it back in.
7) Is there anything I need to know / have forgotten to ask?Many thanks,
Chris Key