First Fix Finished (Almost!)

We're now approaching the end of the first fix.  The electricians are doing their final sweep through the house, the carpenters only have a few days left and the plumbers have pressure-tested all their pipework.  They carry out two pressure tests - after capping off the pipes, they pump up the pressure of the air inside the pipework and then monitor the pressure to see if it holds.  If it doesn't, they locate the points at which the air is escaping and rectify the leak.  Once they have carried out the air pressure test, they fill all the pipes with water and keep the system on test, checking that it holds for a number of days.  They can then be confident that there are no leaks in the system - hopefully!