What should I do if a radiator pipe bursts?

A burst radiator pipe is a plumbing emergency that requires immediate action to prevent serious water damage to your home. Here's exactly what to do.

Immediate Steps (Do These Right Now)

Your first priority is stopping the water flow. Shut off the main water supply valve to your home immediately — in Ottawa homes, this is typically located near the water meter in your basement or utility room. If the burst is on a heating system (hydronic/hot water radiator), you'll also want to shut off your boiler at the power switch or thermostat.

Once the water is off, open a faucet on the lowest floor of your home to relieve pressure and drain remaining water from the pipes. This reduces the volume of water that can leak out while you arrange repairs.

Contain the Damage

While waiting for help, place buckets, towels, or plastic sheeting to protect flooring, walls, and belongings. If water is near electrical panels, outlets, or light fixtures, do not enter that area and shut off the electrical breaker for that zone if you can do so safely. Water and electricity together create a life-threatening hazard.

Ottawa-Specific Context

Ottawa winters are brutal on pipes — freeze-thaw cycles are one of the most common causes of burst pipes here, particularly in exterior walls, garages, and poorly insulated areas. Burst pipe repairs in Ottawa typically run $200 - $500 for a section repair, though costs rise if drywall access or extensive pipe replacement is needed. A licensed plumber will also assess whether a permit is required depending on the scope of work.

Call for Emergency Help

This is not a DIY repair. A burst pipe needs a licensed plumber immediately — the longer water flows or sits, the greater the risk of structural damage, mold, and costly remediation. Ottawa Pro Plumbing offers 24/7 emergency service for exactly this situation.

After repairs are complete, ask your plumber about pipe insulation for vulnerable areas and whether your home's water pressure is within safe range (typically 40–80 PSI), as high pressure accelerates pipe wear.

For immediate emergency assistance, contact Ottawa Pro Plumbing — we're available around the clock for Ottawa and surrounding areas.