I wish to convert my internal garage into a living space
I shall be installing a wooden floor (chipboard) on top of the current concrete slab
I believe there is a DPC in the floor but am not sure
Do I need to lay a PVC DPC under the timber joists that will be fixed to the floor (it is only being raised by 2") or a DPC above the insulation
under the chipboard that is to be laid on top or do I need both?