More in Plumbing

PEX Piping

What's the skinny on this flexible supply tubing?

Richard Trehewey holds a toilet
Q:

During the Tucson project, the old plumbing was replaced with a flexible plastic tubing. We are planning to replace the hot and cold galvanized pipes within the very near future and we would like to install the mentioned plastic tubing — the installation looks easier than the copper or PVC pipe. I would greatly appreciate any information you can provide me on the subject.

— Robert

A:

Richard Trethewey replies: What I showed in Tucson and in Santa Barbara was a piping material generically called cross linked polyethelene (PEX). This super-tough plastic is flexible and allows every fixture or fixture group to get a dedicated supply. Because it's flexible there are no fittings inside the walls. It makes retrofitting a piping system possible in old homes with galvanized steel or old brass piping. It is used widely in Europe and is slowly getting acceptance and approval across the United States. I recommend it highly. Check the Resource Directory for names of companies that we used on the show.

 
 

TV Listings

Find TV Listing for This Old House and Ask This Old House in your area.