don't you just hate these builders that do every thing,i done a job for one of them, just the gas work mind,i suppose he deserves some credit for that,anyways his background is a electrictian and his partner a labourer,together they do the lot,my point being the standard of work,and i can only comment on the plumbing, leaves a lot to be desired,but they get away with it,don't the paying public not understand that these are skilled area's.and it is very unlikely that there going to be proficient in one area never mind two or three.leave the plumbing to the plumbers, electrics to electritian etc etc.