Emergency Frozen Pipe Repair in Boulder, CO
Boulder's hard freeze-thaw winters put real stress on exposed and uninsulated supply lines, and a pipe that freezes overnight can split before you even know there's a problem. Boulder Express Plumbing handles emergency thawing and repair for frozen and burst pipes, day or night.
Local Causes.
Crawlspaces, unheated additions, and pipes routed along exterior walls are the most common freeze points we see in Boulder homes. A hard overnight cold snap, especially after a warmer stretch, is when we see the sharpest spike in frozen and burst pipe calls each winter.
Outdoor hose bibs and irrigation lines that weren't fully winterized before the first hard freeze are another recurring cause, especially in newer Southeast Boulder and Gunbarrel subdivisions with more built-in sprinkler systems than the city's older neighborhoods. A line that looks drained can still hold enough water in a low point to freeze and split. The International Plumbing Code, adopted statewide in Colorado, requires water piping in unconditioned spaces to be protected from freezing, which is exactly the standard we're restoring when we reroute or insulate an exposed line.
Common Warning Signs.
No water, or only a trickle, from a specific faucet after a cold night.
Frost visible on an exposed pipe in a crawlspace or garage.
A bulging section of pipe (a sign it's about to split, not just frozen).
Water actively spraying or pooling after a pipe has already burst.
Unusual smell from a drain that's frozen and not draining.
Need Help Right Now?
A licensed technician can be dispatched today.
Finding the Actual Problem.
If a pipe hasn't burst yet, we locate the frozen section and thaw it with controlled heat rather than an open flame, which is a real fire risk on wood framing and insulation. If it's already split, our first priority is shutting off water to that section to stop the damage, then repairing the actual break.
Once the water is off, we also check whether water reached drywall, subfloor, or insulation nearby. A burst pipe that ran for even a short time before anyone noticed can soak framing that needs to dry out properly, and that's a water damage restoration conversation, separate from the plumbing repair itself.
How We Fix It.
Controlled Thawing.
- Used when the pipe is frozen but hasn't split yet.
- Heat gun or heat tape, never an open flame.
- Often paired with insulation recommendations to prevent a repeat freeze.
Burst Pipe Repair.
- Section replacement once the pipe has actually split.
- We shut off the affected section immediately to limit water damage.
- Good opportunity to reroute or insulate a chronically exposed line.
What Affects the Cost.
We don't publish flat prices because the factors above genuinely change the number. Free on-site estimates cover non-emergency work, and for active emergencies we give you an upfront price before any repair begins. Call (303) 552-3896 for your real number.
Straight Answers.
Carefully, yes, with a hair dryer or heat tape on an accessible section. Never use a propane torch or other open flame on a pipe inside a wall or near wood framing. If you can't tell whether the pipe has already split, or the frozen section isn't reachable, call us rather than guessing.
Shut off the main water valve immediately, that stops new water from feeding the leak while you wait for a technician. We'll walk you through finding it over the phone if you're not sure where it is.
Many policies cover sudden pipe bursts but exclude damage from a line that was left unheated or improperly maintained. We can't speak to your specific policy, but we'll document the cause and damage clearly enough for a claim either way.
Often Booked Together
Once a pipe has actually split rather than just frozen, that becomes a burst pipe repair job with its own urgency. Water that reached drywall or flooring during a freeze event is a separate water damage restoration concern, and any other plumbing quirk that surfaces during the visit falls under general plumbing repair.
A frozen pipe that's already split needs attention immediately, not in the morning. Call Boulder Express Plumbing any hour and we'll get someone dispatched. We'll also flag any exposed lines worth insulating before the next cold snap, so the same section doesn't freeze again next winter.