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Is PEX freeze-break resistant?

Question:

Is PEX freeze-break resistant?

Answer:

PEX piping is freeze damage resistant and can expand and contract as water freezes and thaws within the tubing. No tubing material is freeze-break proof, however, and PEX should be installed using the same locally-prescribed insulation requirements to prevent freezing of any plumbing system.

Question and answer courtesy of Plastic Pipe and Fittings Association (PPFA). More information is available at: http://www.ppfahome.org/pex/faqpex.html