My bathroom fan ducting currently goes through the bathroom wall, through a cupboard, and then the kitchen. For some reason the ducting is done using soil pipe.
I want to cut the pipe in the cupboard, and run it up through the ceiling. Using soil pipe for that will be a bit pricey, and I've got some flexible hose so I'm inclined to use that. However, I'm not sure I can see a neat way of attaching flexible fan ducting to soil pipe, as the pipe diameter is just large enough to preclude stretching the fan ducting over it. Duck tape job maybe...
Going up through the room, I then need to cut a hole in the plasterboard. Short of hiring a huge drill bit, which seems like overkill, and will cost me over an hour of time plus the money, is there a reasonably neat way of making a large hole in plasterboard without destroying the rest of the ceiling in the process?
Ben