That must be an Ontario thing... saw that on Holmes on Homes in the GTA once too.
I dunno... if I'm going to do something myself, it's either because I want the challenge, or to do a better/more conscientious job than a contractor will.
Only once was it to circumvent "code"... put in a laundry sink that was 4" further away from a vent stack than is allowed by code. As far as I was concerned, the sink could drain onto the floor and run down the sewer. The trap doesn't siphon empty, all runs fine - I understand why the code is there, I just chose to ignore it in this one case... better than the $1500 quote I got for routing a vent.
Bren R.
