Every winter, Barrie gets stretches of -20°C cold that test every pipe in your house. Water expands when it freezes, and it doesn't take much ice to split a copper or PEX line — a burst pipe can dump hundreds of litres into your walls, ceilings, and floors before you even know it's happened. The good news: frozen pipes are one of the most preventable plumbing emergencies there is, if you know where to look and what to do.
Which Pipes Are Most at Risk
Pipes freeze where cold air reaches them. In Barrie homes, the usual suspects are:
- Hose bibs and outdoor faucets. The number-one source of freeze damage. A hose left connected traps water in the line right where the cold hits hardest.
- Pipes in exterior walls. Kitchen sinks or bathrooms on outside walls, especially in older homes with less insulation.
- Crawl spaces and unheated basements. Exposed runs in cold zones freeze fast during a cold snap.
- Garages. Water lines running to a garage sink or through an unheated garage are vulnerable.
- Vacant or under-heated homes. If the heat is off or set too low — during a vacation, a renovation, or between tenants — the whole house is at risk.
If you've had a pipe freeze in the same spot before, it will freeze again. That spot needs a permanent fix, not just another thaw.
Prevention: What Actually Works
- Disconnect hoses and shut off hose bibs before winter. Turn off the interior shut-off valve for each outdoor faucet, open the outside tap to drain it, and leave it open for the winter.
- Insulate exposed pipes. Foam pipe sleeves on runs in crawl spaces, basements, garages, and attics. It's cheap and it works.
- Seal drafts. Cold air pouring through gaps around pipes, dryer vents, or foundation cracks is what freezes lines. Caulk and expanding foam around penetrations make a real difference.
- Keep the heat consistent. Don't drop the thermostat drastically at night during extreme cold, and never turn the heat off entirely if you'll be away — keep it at least 13–15°C.
- Open cabinet doors. For sinks on exterior walls, opening the vanity or cabinet doors lets warm room air reach the pipes during the coldest nights.
- Let faucets drip. In extreme cold, a slow drip on faucets fed by vulnerable lines keeps water moving. Moving water is much harder to freeze.
- Know where your main shut-off is. Before anything happens. If a pipe bursts at 2 AM, you don't want to be hunting for the valve.
Signs a Pipe Has Frozen
- Little or no water from a faucet while others work fine — the freeze is in that line.
- Frost or condensation visible on an exposed section of pipe.
- Strange smells from a drain or faucet — a fully blocked line can trap odours.
- Bulging or cracked pipe — if you can see the line, look for deformation.
What to Do When a Pipe Freezes
- Open the faucet served by the frozen line. As the ice melts, water needs somewhere to go — this also tells you when it's clear.
- Find the frozen section. Start where the pipe is most exposed to cold and work toward the faucet.
- Thaw it gently. A hair dryer, heating pad, or towels soaked in hot water wrapped around the pipe all work. Move along the section gradually — never use an open flame or propane torch. Open flames near framing are a fire risk, and sudden intense heat can burst the pipe.
- Check for leaks as it thaws. A pipe that froze may already have split. Watch the thawed section closely and keep someone near the main shut-off valve.
- Call a plumber if you can't find the freeze, if the pipe is inaccessible, or if you suspect damage. A split line inside a wall needs professional repair.
If a Pipe Bursts
Act fast — water damage gets worse by the minute:
- Shut off the main water valve immediately. This is the single most important step.
- Turn off your water heater if the burst is on the hot water side, to avoid damage to the tank.
- Open faucets to drain the remaining water from the lines.
- Call a plumber right away — this is an emergency repair, not a wait-until-morning situation.
- Document the damage with photos for your insurance, and start cleanup: move valuables, mop up standing water, and get air moving with fans. Wet drywall and insulation need to dry quickly to avoid mold.
The Permanent Fix
If the same pipe freezes every winter, thawing it each time isn't a strategy. The real fixes are rerouting the line through a heated space, adding insulation and heat trace cable to the vulnerable run, or eliminating the cold air source. A plumber can assess the spot and recommend the fix that ends the cycle for good.
Don't wait for the cold snap to find your weak spots. Call Concepts Plumbing at (705) 715-1513 for a free estimate on freeze protection in Barrie and Simcoe County. We're open 24 hours a day, 7 days a week — because pipes don't check the clock before they burst.
