Plumbing

Yet another bump in our road of contractor hell.
We were told today that our sink needed a vent up through the walls and out the roof. If the contractor had the plumber out for an initial consult (as the plumber says is customary) he would have told him that the vent needed to be done and it would have been put in our open walls and then plastered up. So now the only way for the plumber to get the piping done is to drill holes through our brand new cabinets, up a wall, through a punched out hole in the wall, into the attic, through a hole in the roof. Now we have rather large piping taking up space in our cabinets. We ended up having a conversation with the plumber about it and he basically said that the contractor was a bonehead and never should have done it this way. He suggested that we ask for money off since now we have a hack job. We are obviously very unhappy with our choice in contractors. It really seems like this was his first job he's ever done.