An island sink presents a unique plumbing problem ... s overflow level before it goes horizontal. Obviously, a vent pipe in a kitchen island can’t do that. One solution to this quandary is ...

If reventing is complicated and wet venting isn't allowed, installing a loop vent is an ideal alternative. An example would ...

Should you have a sink on a kitchen island ... "It’s important to keep in mind that relocating the plumbing to an island may be more expensive than a traditional sink placement, especially ...