Contractors should look for the CISPI mark on cast iron pipe, preferably cast into the metal on fittings and stenciled onto the pipe. They should insist that the cast iron pipe that they install be ...

This step-by-step guide shows you how to safely cut, remove, and replace cast iron pipe with modern PVC, using the right tools and techniques for a smooth upgrade. Andrew Thron Improvements.

The cast iron is dense and it’s very hard to get it to vibrate to create noise. PVC is the opposite. It’s not dense, and the cascading water from a toilet flush vibrates the pipe creating the ...