Q: My new kitchen is going to have a large island with my double-bowl sink in it. The young plumber and my contractor want to use some newfangled thing that just fits under the cabinet. They call it ...

Drain-Waste-Vent (DWV) PVC systems are the hidden backbone of plumbing, and getting their sizing, slope, and venting right is essential for code compliance and long-term performance. From calculating ...

Reviews and recommendations are unbiased and products are independently selected. Postmedia may earn an affiliate commission from purchases made through links on this page. A All plumbing drains ...

Q: We bought a new town house in 2007. It has a stacked washer/dryer set located in a utility closet that backs onto the interior shared wall of the third floor. The dryer is an electric model, which ...

Modern air admittance valves are designed to protect trap seals and maintain proper drainage—but understanding exactly what they do and how to install them correctly is key. An installed AAV under a ...