Frozen pipe burst: what to do

A frozen pipe becomes a real problem the moment it splits, not the moment it freezes. What you do before, during, and after a hard freeze decides how much of a mess you’re cleaning up once the ice is gone.

Before: get ahead of the freeze

Pipe runs across the attic and along exterior walls are the exposed ones in a Texas home. They don’t get the benefit of sitting between two heated rooms, so a hard freeze reaches them faster than plumbing tucked inside interior walls. Wrapping those runs in foam pipe insulation before winter hits is the cheapest prep step available, and it’s a weekend job, not a remodel.

Open the cabinet doors under sinks that back up to an exterior wall. Cabinets usually seal off the pipes underneath from whatever warmth the room has, so opening them during the coldest stretch lets a little more of that warmth reach the line. If a faucet feeds a line you know sits exposed, a slow trickle through it lowers the odds of a full freeze-up along that run, since moving water resists freezing solid better than water sitting still.

Know exactly where your main shutoff valve is, and confirm it turns freely, before a freeze warning is already posted. A stuck valve is the worst possible time to discover it’s stuck.

During: the moment it bursts, or doesn’t yet

A pipe that’s frozen but hasn’t split yet still needs attention. Running hot water directly onto a frozen section can crack it if the ice has nowhere left to expand, so warm the area gradually instead, a hair dryer on low or a space heater kept a safe distance away, never left unattended.

If a pipe has already split, shut off the water at the main, not just the nearest fixture. The break might be inside a wall, so cutting flow to the whole house is the only way to be sure it’s actually stopped. From there, burst pipe cleanup shows what a visit looks like once the water’s off.

After: thaw is when it floods

The real flood often starts once the ice melts, not when the pipe first cracked. A break that happened overnight can sit frozen shut and quiet until the thaw finally lets the water move, and that’s usually when someone finds standing water for the first time.

League City lived through that pattern citywide during the February 2021 freeze. Community Impact reported that the city’s own crews, water, wastewater, traffic, and facility staff among them, answered thousands of calls as residents across League City dealt with burst pipes, while a warming center ran at Hometown Heroes Recreational Facility through the worst of the cold. That’s the scale a single freeze event can reach in one city alone.

Once you’re looking at standing water, the moves match any other water loss: shut off what’s still running, take photos, and start the drying clock. The what to do guide settles that order in full, from the first minutes to the first week. If water’s already spreading and you need help fast, emergency water removal explains what a visit looks like room by room.

Call us once the water’s moving, and we get a local crew headed your way. The freeze already did its damage by the time the ice lets go. What happens in the hours right after is what decides how big that damage gets.