Frozen Pipes in Oshawa

When temperatures drop well below freezing, water lines in exterior walls, unheated garages, crawl spaces and near poorly sealed rim joists can freeze. Ice itself expands and can split the pipe, but the leak usually appears when the ice thaws — which is why burst pipes often show up a day after the coldest night.

Common symptoms

Little or no water from one fixture while others work
Frost on an exposed pipe
Bulging or cracked pipe sections
Strange smells from drains (a frozen drain can block gases)

Common causes

Pipes in exterior walls or unheated spaces
Air leaks near rim joists, dryer vents or hose bibs
Thermostat set low while away
Outdoor taps not shut off from inside before winter

Safe steps you can take now

Open the affected faucet slightly so melting water can flow out.
Warm the pipe gently with a hair dryer, heating pad or warm towels, working from the faucet back toward the frozen area.
Never use an open flame, torch or propane heater.
Know where your main shut-off is in case a pipe has split.
Open cabinet doors under sinks on outside walls to let warm air in.

When to call a qualified plumber

You can't locate the frozen section
The pipe is inside a finished wall or ceiling
The pipe has cracked or is leaking

Typical repair options

Professional thawing

Using safe heating equipment to thaw hidden lines.

Burst pipe repair

Replacing split sections.

Insulation and rerouting

Insulating or relocating vulnerable lines.

Frost-free hose bibs

Replacing outdoor taps with freeze-resistant models.

What affects the cost

Prices vary from job to job, so we don't publish fixed rates. These are the factors that usually make the biggest difference. Ask for quotes in Canadian dollars and confirm whether HST is included.

Location of the frozen section
Whether the pipe has burst
Wall access and insulation work
After-hours timing during cold snaps

Oshawa context

Durham Region winters bring repeated freeze-thaw cycles. Shutting off and draining outdoor taps from the inside each fall is one of the cheapest ways Oshawa homeowners can prevent freeze damage.

Frequently asked questions

Should I leave taps dripping in a cold snap?

For pipes known to freeze, a slow trickle can help by keeping water moving. It's a short-term measure, not a fix.

How long does it take for pipes to freeze?

It depends on temperature, wind, insulation and pipe location. Vulnerable pipes can freeze overnight in severe cold.

Will a frozen pipe always burst?

No, but the risk is real. Thaw it promptly and watch for leaks as it warms.

What temperature should I keep my home at while away?

Keep the heat on at a reasonable setting and ask someone to check the house during long absences in winter.

Request help with frozen pipes

Describe the issue and we'll get right back to you with next steps. It's free to submit and there's no obligation.

Request a Plumbing Quote