Getting your Salem pipes ready before the next hard freeze

Why a valley cold snap catches homes off guard

Salem can go a winter or two without a serious freeze, and that is exactly the problem. Hoses stay connected, crawlspace vents stay open, and nobody thinks about the pipe that runs along the north wall. Then a few days of hard cold settle over the Willamette Valley and the weak spots show up all at once.

The January 2024 ice storm was a clear example. Cold air, ice and power outages hit the valley together, and homes that lost heat for a day or more were exposed in places that never cause trouble in an ordinary winter. Frozen and burst pipes kept plumbers busy across the region well after the ice melted.

Most of the risk sits in a short list of places, which means most of the prevention is a short list of jobs you can do in an afternoon. Early October is a good time for it. The crawlspace is still dry enough to crawl through comfortably, hardware stores have insulation in stock, and you are not trying to find a shutoff valve by flashlight with ice on the driveway.

Where pipes freeze first in a Salem house

Most Salem homes sit over a vented crawlspace, and plenty of water heaters live in garages. That puts water lines in spaces that follow the outdoor temperature more closely than the living room does, and wind through a foundation vent can chill a pipe faster than still air. These are the spots we see fail most often after a cold snap.

Older homes add their own risks. Houses in Grant, Highland and Northeast Salem often have galvanized steel lines running through drafty crawlspaces, and later additions sometimes put a bathroom over an unheated porch or a cantilevered floor. Hillside homes in the South Salem and West Salem hills can catch more wind on exposed walls. If a pipe has frozen in your house before, it is likely to be the first to freeze again.

• Outdoor hose bibs, especially with a hose still attached
• Supply lines in the crawlspace running near foundation vents
• Pipes inside exterior walls on the north side of the house
• Water heater lines and laundry hookups in an unheated garage
• Irrigation backflow assemblies and the piping above ground
• Lines under kitchen and bathroom sinks on outside walls

What actually happens when a pipe freezes

Water expands as it turns to ice. When a plug of ice forms in a pipe, the water trapped between that plug and a closed faucet has nowhere to go, so pressure climbs in that short section. The split usually happens there, sometimes a few feet from the ice itself, which is why the leak can show up in an odd spot.

While the pipe is frozen, nothing leaks, because the ice is holding everything in place. The water arrives when the line thaws, often hours later and often in a crawlspace where nobody sees it right away. Copper tends to split along its length, galvanized steel tends to fail at threaded joints, and PEX handles freezing better, though its fittings can still let go.

Power outages make all of this worse. During the 2024 ice storm, plenty of homes were fine until the furnace stopped running, and then the crawlspace and walls cooled down within a day. A house that keeps its heat rarely freezes inside the living space. A house without heat for a long stretch can freeze in places that have never given trouble before, so outage planning is part of freeze planning.

Outdoor faucets and irrigation before the first freeze

Disconnect every garden hose. A hose left on a hose bib holds water against the valve, and even a frost-free style bib can split when the hose keeps it from draining. Cover each outdoor faucet with an insulated cap. If your bibs have a separate shutoff inside the house or crawlspace, close it and open the outside faucet to let the line drain.

Irrigation systems need to be shut off and drained before the cold arrives, and the backflow assembly needs protection. A cracked assembly is a common spring surprise. If a hose bib already drips or cracked last winter, repairing or replacing it typically runs $159 to $389 in Salem, and the final price is given before work starts.

Check the outdoor faucets once more after the first cold night. A bib that drips steadily in the morning has a worn valve or a crack starting, and that is far easier to fix in October than in the middle of a freeze. Also look at any above-ground pipe running to a hot tub, shop or detached garage, since those lines get forgotten until they split.

Crawlspace and garage prep that pays off

Take a flashlight into the crawlspace before the cold season. Look for pipe insulation that has slipped off or been pulled down by rodents, and replace it with foam sleeves sized to the pipe. Pay extra attention to lines that run close to foundation vents. When a hard freeze is in the forecast, cover those vents temporarily, then open them again once it passes so the crawlspace can dry out.

In the garage, keep the main door closed during a cold snap and insulate any exposed lines near the water heater or washer. Learn where your main water shutoff is and make sure it turns. If you find damaged or sagging lines while you are down there, crawlspace plumbing repairs typically run $319 to $1,490 in Salem, depending on how much pipe is involved.

During the freeze and if a pipe does burst

On the coldest nights, let a thin stream of water run from faucets on outside walls and open the cabinet doors under those sinks so warm room air reaches the pipes. Keep the thermostat steady, even if you leave town. If a faucet stops flowing, the line is frozen somewhere. Warm it gently with a hair dryer or a space heater kept at a safe distance, and never use an open flame.

If a pipe bursts, shut off the main water valve first, then turn the water heater to its off or vacation setting so it does not run without water. Frozen and burst pipe repairs typically run $289 to $1,190 in Salem. We answer 24/7, so you can call First Choice Rooter at (971) 326-9414 the moment you find water where it should not be.