Emergency Frozen Pipe Repair in Longmont, CO
A frozen pipe is a race against time. We locate and safely thaw the line before it bursts, or repair it fast if it already has.
Frozen pipe repair covers locating a frozen line before it bursts, thawing it safely, and repairing or replacing any section that's already cracked. Front Range winters put exposed and poorly insulated pipes in Longmont homes at real, recurring risk during hard cold snaps.
Speed matters here more than with most plumbing problems. A frozen pipe that isn't addressed can crack from the pressure of expanding ice and turn into an active flood the moment it thaws, whether that's from the weather warming up or someone unknowingly running the tap.
Signs of a Frozen Pipe
- No water, or only a trickle, from a specific faucet during a cold snap while others work fine.
- Visible frost on an exposed section of pipe.
- A pipe that's noticeably bulging in one section.
- Unusual smells from a drain, which can mean a frozen trap or vent.
- Sounds of dripping or running water where there shouldn't be any, which can mean a line has already cracked.
Where Pipes Freeze in Longmont Homes
The pipes most at risk here are the ones exposed to real cold: lines in unheated crawlspaces, garages, and exterior walls with thin or missing insulation. A hard freeze during a Front Range cold snap can drop those specific sections well below freezing even while the rest of the house stays warm.
Older Longmont homes with original plumbing routed along exterior walls, common in construction from decades before current insulation standards, are more exposed to this than newer homes built with interior wall routing for water lines.
How We Locate and Thaw a Frozen Pipe
Locating the frozen section starts with identifying which fixtures have no flow, which narrows down the likely section of pipe, then a visual and thermal check of exposed runs in crawlspaces, garages, and exterior walls confirms the exact location.
Thawing uses controlled heat, an electric heat tape or a professional-grade heat gun, applied gradually from the faucet end toward the blockage. This is done specifically to avoid an open flame, which is a real fire risk against pipe insulation and framing that a professional approach avoids.
Thaw, Repair, or Prevent?
- Safe thawingThe immediate fix for a frozen but intact line, restoring flow without damage.
- Section repair or replacementNecessary if the pipe already cracked from ice expansion, which often isn't visible until the ice melts and water starts flowing through the crack.
- Insulation or rerouteThe real prevention step for a line that's frozen once, since a pipe that froze once in an exposed location will freeze again in similar conditions unless it's insulated or rerouted.
What to Do Before We Arrive
- Never use an open flame, a propane torch, or any unattended heat source to thaw a pipe. It's a real fire risk against insulation, framing, and older wiring.
- Locate your main water shutoff valve now, in case the pipe has already cracked and starts leaking as it thaws.
- Keep the affected faucet open slightly while thawing is attempted, since moving water is less likely to refreeze and gives a clear sign once flow is restored.
- If you can see or hear water already escaping, shut off the main valve immediately and treat it as an active leak rather than continuing to attempt a thaw yourself.
What Frozen Pipe Repair Costs
Cost depends on whether the fix is a straightforward thaw or an actual repair for a pipe that already cracked.
- Thaw vs. repairThawing an intact line costs far less than repairing or replacing a cracked section.
- Location and accessA pipe in an accessible crawlspace is quicker to reach than one inside a finished wall.
- Time of callAfter-hours dispatch during a cold snap costs more than a scheduled daytime visit, which matters if the pipe is frozen but not yet cracked.
- Prevention workAdding insulation or rerouting an exposed line is a separate cost worth discussing once the immediate problem is resolved.
Free estimates for non-emergency prevention work. Call (303) 552-3896 immediately if a pipe is actively frozen or has burst.
Frequently Asked Questions
How do I know if a pipe is frozen versus just a plumbing issue?
No water or a bare trickle from one specific fixture during a cold snap, while other fixtures work normally, is the clearest sign of a frozen line rather than an unrelated plumbing problem.
Can I thaw a frozen pipe myself?
Carefully, with a hair dryer on a low setting applied gently, some homeowners do. An open flame should never be used, since it's a real fire risk against pipe insulation and nearby framing.
Will a frozen pipe always burst?
Not always, but the risk is real, and a pipe that's already showing frost or has stopped flow is worth addressing quickly rather than waiting to see what happens.
Do you respond to frozen pipes at night?
Yes, frozen and burst pipe calls are treated as emergency dispatch 24/7 in Longmont and the surrounding service area, especially during cold snaps.