Hi all, I'm goign to hire a core drill this weekend to drill a hole in outside wall so I can re-route kitchen sink waste. What size bit do I need for 400 mm waste pipe? I've reserved a 400 mm bit but measureing the pipe last night I see this seems to be the inside diameter of the pipe . . .
And - at what height from the floor should my hole be?
many thanks for any advice
And - at what height from the floor should my hole be?
many thanks for any advice