What happens to pex when

Steve Ebels · September 2002

What happens to pex when it's buried in concrete and there is no place for it to go?? I've heard many discussions on this topic but never any definitive answers. We all know that the stuff grows at an alarming rate when hit with hot water so what happens to it when it goes from 50-90 degrees in a slab? My theory is that it has to expand and the only direction it can grow is inward, effectively making the ID of the tube smaller.

Does anyone know for sure??

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eleft_4 · September 2002

time to be the molecule

se,

If this is true and your panel is around 250ft how much can it really effect the flow? Could it be enough to even conceder?

al

Mark Hunt · September 2002

That is what I've been told by a couple of different tubing manufactureres.

I was also told that their software takes this into account when it calculates FtH2O and GPM.

Mark H

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What happens to pex when

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