Frozen pipes, thawed safely and repaired properly

Every winter, in every part of the state. Virginia does not get Minnesota cold, and that is exactly the problem. Houses here are built with less margin, more plumbing runs through unconditioned crawl spaces and garage walls, and nobody expects it. A single night in the teens with wind is enough to freeze an exposed line in a Roanoke crawl space or a Fairfax garage wall.

The classic signs are one fixture with no flow while the rest of the house is fine, a trickle that will not build, frost or condensation on an exposed pipe, and a strange smell from a drain. If the whole house has lost water in freezing weather and you are on municipal supply, the freeze is likely at the point where the line enters the building or in an unheated crawl space.

Sometimes, carefully, on an exposed and accessible pipe. Working from the fixture end back toward the frozen section with the tap open. What you must never use is an open flame, a propane torch or a heat gun on full. Torch thawing is a leading cause of house fires in cold snaps, and rapid uneven heating can split a pipe that would otherwise have survived.

Because ice expanding inside a pipe often cracks the wall without the water escaping. The ice itself is plugging the hole. The leak appears the moment the plug melts, which may be hours after you have gone back to bed thinking the crisis passed. That is why a thawed line should be watched under pressure, not just declared fixed.

Anything in unconditioned space. Crawl space runs are the biggest single category statewide, followed by garage walls, exterior-wall kitchen and laundry lines, attic runs in houses with upstairs bathrooms, and hose bibs left connected to a garden hose. In older homes, uninsulated lines against a north-facing exterior wall are a recurring offender.

Almost certainly, unless something changes. A pipe that froze once has told you exactly where the weak point in the building envelope is. The fix is usually cheap, insulation, an air seal, sometimes heat tape or rerouting a short run, and much cheaper than repeating the emergency. See pipe insulation and freeze protection.

A slow drip on the fixtures served by the most exposed runs genuinely helps, because moving water is much harder to freeze and a dripping tap relieves the pressure that actually splits pipes. It is not a substitute for insulation, and it does nothing for a line that has already frozen solid.

Vacation homes around Smith Mountain Lake, hunt-country properties and houses on the market are where the worst freeze damage happens, because nobody is there when it starts. Either keep the heat on at a genuine minimum rather than off, or have the system properly winterised and drained. A burst line in an empty house runs for days.

Yes. On a well, the vulnerable points are the pressure tank and the exposed pipework around it, often sitting in an unheated basement corner, a well house or a crawl space. Freezing there can take out the whole water supply and, if the pump keeps trying to run against a blockage, damage more than the pipe. See well pump and water system service.

No water at all in freezing weather is a call-now situation, yes, both because the household needs water and because an unattended freeze becomes a burst. If it is one fixture, the house is warm and you can isolate it, a morning appointment is usually fine and cheaper.