It cannot be used outside.
In floor pex tubing problems.
Polyethylene including pex has dimensional stability problems i e it shrinks back over time.
The flexible tubing is embedded in a.
Poly b is a flexible grey pipe used in residential plumbing and hot water heating systems from the mid 70s through the 80s and into the mid 90s.
Pex piping was invented in the 1950s and refined during the 1960s for use in for radiant floor heating systems.
The new plastic fashioned into flexible pex pipe also known as pex tubing arrived in the us in the 1980s initially for radiant floor heating systems.
I fired him on the spot.
Pex piping is not meant for external use.
When i built my last home in 2005 the plumber tried to pull a switch and substitute pex for the copper pipe he had quoted saying pex was superior.
Pex tubing is easier and faster to install than most other types of plumbing pipe which makes it a popular choice for beginning plumbers.
There s been a lot of debate over pex for the last several years because pex has a few downsides that you might not expect.
Pex tubing or piping is used for water supply lines as well as radiant floor heating.
With 1 2 tubing a 6 pattern is sometimes used in smaller spaces such as bathrooms and for extreme cold climates while 8 and 9 patterns are standard for most living areas in most climates and a 12 pattern is used in garages.
While pex is generally considered a safe product and accepted by building codes the materials and components that comprise the system have several vulnerabilities and several defective fittings and systems produced by various manufacturers have resulted in leaks and system failures.
The reasons for this are twofold.
Here are some of the pex pipe problems you ll want to know about before making any decisions.
It can be buried underground in concrete in radiant floor heating installations but it is not meant for external piping applications.
It s not a good choice for water pipe under pressure.
The pipe and the fitting.
For example by increasing the flow through 1 2 pex tubing by only 0 1 gpm floor output will increase at 5 btu sq.
At plastic expert group our experts in pex analysis will determine if the pipe failed due to defective installation or because of a manufacturing defect.
However if pex pipe is incorrectly installed leaks kinks and other common challenges can easily occur.
To avoid these potential problems be sure to follow these four tips when installing pex pipe.
It cannot be recycled.
Some of the disadvantages of pex include.
Unconfirmed estimates say there are approximately 200 000 homes in bc with poly b water systems and some 700 000 homes across canada.
As more and more people are using pex tubing over the past few years failures are being reported.
