PEX piping is used in some newly constructed homes, as well as older re-plumbed households. PEX is flexible and made of cross-linked polyethylene, requiring no primer or cement to hold the joints in place. These joints are either plastic or brass, and are fitted to the pipes using crimp rings. Though durable and resilient to temperature change, PEX pipe needs to be insulated, using the same foam pipe insulation as standard copper or CPVC water lines.
Things You'll Need
- Tape measure
- Foam pipe insulation tubes
- Insulation tape
Measure the diameter of the PEX pipe that needs to be insulated. Use the same diameter foam pipe insulation tube, as the PEX pipe.
Pull open one end of a section of foam pipe insulation tubing at the slit using your hands. Push the PEX pipe into the hollow center of the foam tube. Work your way all the way down the tube opening the slit, and pushing in the PEX pipe.
Pull off the plastic strips covering the glue on each side of the tube's slit. Push the slit together with your hands; the glue will hold the slit together.
Install the next section of foam tubing around the PEX pipe following the same directions. Push this second foam tube up against the first tube. Wrap insulation tape three times around the join between the two foam tube ends. This will help both insulate the pipe, and keep the foam tube in position. Continue in like fashion installing more insulation tubing, until all the PEX piping has been insulated.
Tips & Warnings
- Use scissors to cut the foam insulation tubing, where necessary.
- Foam insulation tubing has a slit all along one side of the tube. This is to allow access for the pipe to be installed inside the tubing.
- Photo Credit Background Abstracts/Photodisc/Getty Images
Pex Pipe Standards
PEX piping is highly regulated. The manufacturers of PEX piping are required to produce the piping to specific standards and a set...
How to Do Plumbing with PEX Tubing
Last year my older home had a serious water leak that resulted in major damage. I didn't want to have to face...
How to Insulate Pex
Insulating Pex pipe is no different than insulating around copper or iron pipe. The easiest and most economical form of pipe insulation...
How to Winterize Pex
Pex is the generic name given to crosslinked polyethylene pipe, which is an HDPE plastic-like tubing that remains flexible yet strong. Pex...
How to Compare PEX Piping to PVC
PEX and PVC piping are types of plastic piping. PEX is made of crosslinking polyethylene molecules. It is flexible plastic and does...
How to Install Pex Plumbing
Pex tubing is usually used for radiant heat installations. However, it is now being used more for hot and cold plumbing systems....
How to Install Pex Tubing for Water Lines
PEX cross-linked polyethylene tubing is economical and easy to handle; consequently, many professional plumbers and DIY home builders have switched to PEX...
How Long Will PEX Pipes Last?
Crosslinked polyethylene, or PEX, has several characteristics that might make it a superior material for plumbing lines when compared to options such...
The Advantages of Pex Tubing
PEX is a tubing system meant as a replacement for some traditional plumbing methods. PEX stands for cross-linked polyethylene tubing. In the...