![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj9VWt1vFFiCyEGa3hT2SkB7vnfX2CXC_aVK3VtkSymbtR2I59fB6kkwVAev1Ofr-kTrTEr6p3sKa4noUPI02uTAxgPIG_KiuqTHwqZe0e09B27O3dU1jKrhtB6odbLMwS4Q7VqJ4iwozC6/s320/081013+Plumbing+039.jpg)
There are three ways to manage the expansion in PEX pipe:
1) Create lots of slack
The way to manage this expansion in PEX pipe length is to create adequate slack in your lines. This is generally accomplished by placing a loop in the line as shown in the picture.
2) Make big enough holes
Most of the PEX you will likely be using will be 1/2-inch so make your holes at least 3/4-inch in your joists and studs. That way the PEX pipe can easily move when it expands and contracts. An added bonus is that a bigger hole makes it easier to install as well.
3) Use bigger clips
I like to use the 3/4-inch clips to secure the 1/2-inch PEX pipe. It keeps the pipe in place but also allows free movement through the clip for expansion and contraction. Plus if you are like me I do not quite get the position right and a looser clip makes it easier to make adjustments.
BTW: I found the exact-fit clips, that would be 1/2-inch for 1/2 pipe, tend to scratch the pipe if you try to move the pipe through the clip. This is not a good thing as it is creating a potential weakness in the pipe that could leak latter.
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