The building, and what it does to the job
Across this patch most homes are lived in by the people who own them. The rooms therefore start closer to true than in most of London. The date is booked with whoever can actually give us access for the whole slot. The day is planned to the stock, not to a standard slot.
The stack serving the bathroom above comes down the rear elevation in cast iron, and its branch settles where a sink waste can reasonably be picked up. The old top comes out in the morning and the new one goes onto the same units the same afternoon. What is under the old top is the real question.
Window boards and cills stand proud of the plaster, so the back edge of the top has to be plotted to where the units actually sit rather than to the wall. Rushing that is what leaves a gap you look at every morning for fifteen years. A bonded mitre goes down on one plane or not at all.
