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How many times can pex freeze before bursting? At what temp will it only take once? Will it just expand and contract forever without damaged? Does it get significantly weaker?
I'm not asking about in slab but under a floor for example. As in an other plumber told me it won't. I kept my mouth shut. I did however note the attitude. With a water test on would the cooper shower riser split before the pex or would the pex expand enough to protect it?
Just never thought of risking it before nor will I.
I've seen pap in a floor freeze, bad. I've seen the results from a "test" under the floor(my nephew did that one). But pex's are different?
Thanks in advance