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 ...

Does NY code allow for the venting of a kitchen island sink via air admittance valve similar to the one shown here as option 2.

Have you heard the old saying, “You don’t know what you don’t know”? It’s an axiom homeowners should always keep in mind when thinking about the mechanical and structural systems hidden behind the ...

Q: I’m installing my own kitchen island with a small sink. The drain line is in and I’d like to use an auto vent as opposed to a vent loop to vent the drain. Unfortunately I cannot find this venting ...

Q. I'm interested in buying a two story house built in 1927. The current owners have lived there since 1946 and have done very little updating. One potential problem: there is a one inch diameter pipe ...