Vent stacks in home plumbing systems work the same way. The centerpiece of a DWV system is the main stack, usually a pipe 3 or 4 inches in diameter that runs vertically in the wall and up through ...

"In the case of the vent stack, we'll investigate above the bathroom to see the pipe coming up through the house," says Petrie. But contractors can't see through walls, so don't expect them to ...

Want to make that extra space in the basement useful by installing a bathroom? It's a job you can do yourself, and here we ...