Frozen and split pipe repair for Salem homes

Salem does not freeze every winter, but when a hard cold snap settles in, as it did during the January 2024 ice storm, the same pipes fail again and again. Hose bibs, lines running through a vented crawlspace, and pipes inside exterior walls on the north side of the house lose heat fastest. Many of them sit right next to a foundation vent.

The tricky part is timing. A frozen pipe often looks fine until it thaws, and then a split that was plugged with ice starts to spray. We answer around the clock during freeze events, and the first thing we do on any call is get the water stopped so the damage does not keep growing.

Why a pipe splits away from the ice plug

Most people picture ice expanding and bursting the pipe right where it froze. What actually happens is that an ice plug forms and keeps growing, trapping water between the plug and a closed faucet. As more ice forms, pressure in that trapped section climbs until the pipe gives way at its weakest point.

That weak point is often a fitting, an old solder joint, or a thin spot in the pipe wall, sometimes several feet from the frozen section. It is why we inspect the whole run on a freeze call, not just the spot that felt coldest.

Thawing a frozen line without making things worse

We open a faucet downstream so melting water has somewhere to go, then warm the pipe gradually, starting near the faucet end and working back toward the ice. Gentle heat lets the plug soften without stressing the joints. A few common thawing habits cause more damage than the freeze did.

• Open flames on pipes, which can scorch framing and crack fittings
• Thawing from the middle of a run, which traps meltwater between two plugs
• Leaving the main on while you search for the split
• Closing up a wall before every joint has been pressure tested

Repairing split copper, PEX and galvanized lines

Copper usually splits along its length in a thin bulge, and we cut out the damaged section and solder or press in new pipe. PEX is more forgiving because it can stretch, but its fittings can still crack or pull loose, so we replace the fitting along with any tubing that looks swollen.

Galvanized steel tends to break at threaded joints, and after a freeze it is common to find more corrosion than expected once the pipe is opened. If the line is badly closed up inside, we will tell you and price a section replacement in PEX or copper.

Keeping the next cold snap from doing this again

Most repeat freezes come down to a few exposed spots. Once the repair is done, we point out which lines are at risk and what would protect them, such as foam insulation, rerouting a run away from a foundation vent, or adding a shutoff so an outdoor line can be drained before winter.

• Disconnect garden hoses before the first hard freeze
• Cover crawlspace vents during an extended cold snap
• Let a faucet on an exterior wall drip on the coldest nights
• Know where your main shutoff is and make sure it turns