North Texas houses are built for heat, not long freezes. Supply lines often run where cold air reaches them easily:
Water expands when it freezes. Pressure builds between the ice and a closed faucet until the pipe splits, often somewhere other than where it froze. PEX handles freezing better than copper, but it can still fail at fittings.
- Exterior walls, especially on the north side and behind kitchen and bathroom sinks
- The attic, where lines to upstairs bathrooms and the water heater run over the ceiling insulation
- The garage, including laundry lines and tankless water heaters on exterior walls
- Outdoor hose bibs and the pipe just inside the wall behind them
- Sprinkler system backflow preventers and pool equipment outside
- Under sinks on exterior walls, behind closed cabinet doors


