Why PEX Pipe is Head and Shoulders Better for Mold Prevention PEX pipe has greater resistance to mold compared to black pipes, PVC, and foam-filled pipes. This implies that PEX’s flexibility, fewer ...

All PEX pipe is made of plastic, with three distinct types of ... ProPEX expanding tools temporarily stretch the ends of PEX, ...

That's a bit of a problem if you're trying to attach a PEX pipe to certain fittings and the pipe doesn't fit. It may be flexible, but it's not so flexible that you can expand the opening with your ...