Q: Will PEX pipe break if it freezes?
A: PEX pipe is freeze-damage resistant, meaning the pipe will expand if frozen and contract to its original shape when thawed. PEX pipe is not freeze-proof, however, meaning that the water in the pipe can still freeze, block the water flow, and possibly burst (especially at the fittings).
You should use the same standard insulation precautions with PEX pipe to help prevent freezing. Insulate exposed runs, seal cold‑air leaks, and use heat tape on vulnerable sections to keep winter damage at bay.
PEX pipe should not be used outdoors in direct sunlight because it is not approved for continuous UV exposure. For more info on pex pipe, visit our site: extremehowto.com/category/plumbing/pex/
