Frozen/burst pipes: safe recommissioning

After an outage or freeze, restore water and heat cautiously while watching concealed splits, fittings, water heaters and cold zones.

VERT / GREEN = documenter/entretenir · JAUNE / YELLOW = mesurer/vérifier · ROUGE / RED = arrêter et faire sécuriser/valider.

Active leak on repressurization
Shut water and limit damage before further recommissioning. Pipes may still be frozen in walls
Do not restore full pressure without safe inspection/thawing. Long winter outage
Check cold zones, appliances and drains before normal operation. No leaks and stable pressure
Document vulnerable areas and improve freeze prevention.

What the professional checks

Locate frozen/burst sections and concealed damage
Verify plumbing/heating recommissioning

Official sources

Canada — pannes de courant

Checked: 2026-08-22

V15

Remaining system checks not to miss

V15 covers issues that can block a project, cause a loss or become expensive once concealed.

Before closing wallsPost-renovation commissioningCodes + climate by province

V47

V47 interfaces not to miss

These details are small on a drawing but can control water, structure or durability.

Cold-pipe condensation