Frozen Pipe Repair in Calgary
Garages, crawl spaces, and exterior walls are where Calgary winters do the most damage to household plumbing. Yaya handles frozen pipe thawing, burst pipe repair, and hose bib damage — and can help you prevent it before the next cold snap hits.
Why Pipes Freeze in Calgary Homes
Calgary's winters put specific parts of a home at risk that a lot of homeowners don't think about until it's already a problem. Garages — especially attached garages with a water line running to a laundry sink or hose bib — are rarely insulated to the same standard as living space, and an unheated or under-heated garage during a cold snap is one of the most common places for a freeze to start.
Crawl spaces and exterior walls are the other two big risk areas. A crawl space with poor insulation or a foundation vent left open lets cold air sit directly against pipes running through it. Exterior walls — particularly on additions or renovations where a pipe run ended up on an outside wall instead of an interior one — don't have the surrounding heated space to buffer against a hard freeze the way pipes deeper in the house do.
Warning Signs Before a Burst
A pipe that's freezing but hasn't split yet usually gives some warning: noticeably reduced or no water flow from a specific fixture during a cold snap, frost visible on an exposed pipe, or a faint knocking or whistling sound when a tap is opened. Catching it at this stage — before ice fully blocks the line and pressure builds — is the difference between a thaw and a repair.
Once a pipe actually splits, you often won't know until it thaws and starts leaking, sometimes hours or days after the cold snap has passed. This is why a sudden leak appearing during a warm-up after a hard freeze is one of the most common winter plumbing calls in Calgary.
Safe Thawing vs. What Causes Splits
The right way to thaw a pipe is gradual, even heat — a hair dryer, an electric heating pad, or warm (not boiling) towels applied along the frozen section, working from the open end back toward the blockage so melting water has somewhere to go. What causes splits is usually sudden expansion: a blowtorch or other open flame applied directly to a pipe, or ice that's already fully blocked a section so pressure has nowhere to release as it expands.
If a pipe has already split, thawing it just means the leak starts flowing — at that point it's a repair, not a thawing job, and the water needs to be shut off at the nearest valve before anything else.
Hose Bibs and Frost-Free Sillcocks
Exterior hose bibs are one of the most commonly damaged fixtures over a Calgary winter, especially if a hose was left attached going into freeze-up — that traps water in the bib itself with nowhere to expand. Frost-free sillcocks are designed to drain automatically once shut off, but only if nothing's blocking that drainage, which a connected hose does.
Damage often isn't obvious until spring, when the bib is turned back on and water shows up inside the wall or basement near where the line runs through, rather than at the spout itself.
What's Included
- ★ Assessment of frozen sections before any thawing begins
- ★ Safe, gradual thawing using appropriate methods for the location
- ★ Repair of any splits found once thawed
- ★ Hose bib and sillcock inspection and replacement if damaged
- ★ Prevention recommendations for at-risk areas going forward
Permits
Standard frozen pipe thawing and repair doesn't require a permit. If a pipe run needs to be relocated or rerouted as part of the fix, that's addressed as part of the repair, not as separate permitted work.
Timeline
Thawing and repair of a single frozen or burst section is typically completed same-day.
How to Prepare
- ★ Shut off water to the affected section if you suspect a burst
- ★ Don't apply direct open-flame heat to a frozen pipe
- ★ Disconnect any hoses from exterior bibs if not already done
- ★ Note which fixtures have reduced or no flow
- ★ Point out any areas with prior freeze damage from past winters
Related Services
Frozen Pipes FAQ
Honest answers to common questions Calgary homeowners ask.