Q. I want to add another lavatory to an end of my house. My house is built on a slab and there is no plumbing there. How do I go about adding the plumbing for the toilet and the sink? A. When a house ...

In homes built before 2000, water supply lines made of copper were predominantly run under the concrete floor of a home. It was a common building practice that wasn’t bad, in theory. However, some ...