Quote:
Originally Posted by thorsen
I used Merflex PEX 1/2"
After 36 hours in my deep freeze, the water was frozen solid, but the PEX did not expand noticeably. I suspect that if I had 100' of PEX filled completely with water it may be more noticeable.
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I don't think so. The water is only going to expand a little bit - enough to pop copper piping but not anything with a little bit of give, like pex. 3x expansion is way more than what water does.
You could always shoot some of that high expansion foam in there and cap both ends real quick
