Why Kent pipes freeze when it barely gets cold
Homes around Puget Sound are built for mild, wet winters, not hard freezes. That is usually fine. It is also exactly why a cold snap does more damage here than in places where deep freezes are normal.
Two things work against us. First, our plumbing tends to run through the cold parts of the house: unheated crawl spaces, attics, garages, and pipes tucked inside exterior walls. Builders here have not always buried water lines deep or wrapped them the way they would in Minnesota, because most winters never call for it. Second, when an arctic blast does drop down over the region for a few days, those exposed pipes have nothing protecting them.
Water expands as it freezes. When it freezes inside a pipe, the ice pushes outward with enormous force, and the pipe or a fitting gives way. Oddly, the pipe often does not leak while it is still frozen, because the ice plugs the hole. The flood comes when it thaws and water rushes through the crack. That is why a cold snap in Kent can turn into a burst-pipe cleanup a day or two later, right as the weather warms back up.
Prevention that actually works
You do not need to winterize like you are in the mountains. You need to get the vulnerable pipes through a few hard nights. These steps are what actually help:
- Insulate the exposed pipes. Foam pipe sleeves from any hardware store slip right over pipes in the crawl space, garage, and attic. Focus on the runs along exterior walls and anywhere the pipe feels cold to the touch.
- Drip your faucets during a hard freeze. On the coldest nights, let a thin stream run from the faucets farthest from where your water comes in. Moving water is much harder to freeze, and a running faucet relieves the pressure that actually bursts pipes.
- Open cabinet doors. Kitchen and bathroom sinks on exterior walls stay warmer if you open the cabinet doors and let household heat reach the pipes underneath.
- Disconnect and drain the hose bibs. Outdoor spigots freeze first. Before the cold arrives, unscrew every garden hose, shut off the indoor valve that feeds the spigot if you have one, and let the outside faucet drain. A hose left connected traps water right at the wall.
- Keep the heat on. If you travel during a cold stretch, leave the heat set no lower than the mid 50s. It costs a little. It costs far less than a flooded house.
How to tell if a pipe is already frozen
The classic sign is a faucet that gives you nothing, or barely a trickle, on a cold morning when the rest of the house has water. One fixture dead while the others work points to a frozen line feeding that spot.
Other clues: frost on a visible pipe, a bulge in an exposed pipe, or a strange smell backing out of a drain. If you suspect a pipe is frozen, act before it thaws on its own, because a frozen pipe may already be cracked and just waiting to leak. Now is the time to find your main shutoff and keep a close eye on things.
Thawing a frozen pipe safely
If you can find the frozen section and reach it safely, you can often thaw it yourself. Slow and gentle is the rule.
First, open the faucet that the pipe feeds. As the ice melts, you want the water and pressure to have somewhere to go, and running water helps clear the ice.
Then warm the frozen stretch gently. A hair dryer, a heat lamp, a space heater kept a safe distance away, or towels soaked in hot water all work. Start near the faucet and work back toward the frozen part, so melting water can drain out the open tap.
Here is the part that matters most: never use an open flame. No blowtorch, no propane heater aimed at the pipe, no charcoal. People burn their houses down every winter trying to thaw pipes with fire, and the sudden heat can crack the pipe anyway. If the frozen pipe is inside a wall, in a spot you cannot reach, or you cannot find it at all, that is a call for a plumber, not a bigger heater.
The moment a pipe bursts
If a pipe lets go and water is coming in, the order is not complicated, and the first step is the one that saves you.
Shut off the water at the main, right now, before anything else. Turn the main valve clockwise until the flow stops. Every second the main is open, more water is filling your house. This is why knowing where that valve is ahead of time matters so much.
Then open a few faucets to drain the pressure out of the lines, and cut power to any area where water is near outlets or electronics, if you can reach the breaker safely. Move what you can out of the water, and start documenting: photos and video of the burst, the water, and the damage, before you clean anything up. Your insurance claim will lean on that proof.
When to call a professional
A burst pipe is two problems. A plumber fixes the pipe. But the water it dumped into your floors, walls, and crawl space is a second job, and that water behaves like any other water loss: it wicks into materials, soaks the subfloor, and can start growing mold within a day or two if it is not dried out properly.
That is where the crews we connect you with come in. They extract the standing water, pull moisture out of the structure with commercial air movers and dehumidifiers, and verify the house is dry with meters instead of guesswork. Burst and frozen pipes are their busiest call every time the temperature drops, so if one lets go at your place, get the water shut off, then call. The faster the drying starts, the less of your home the freeze gets to keep.
