How to protect your plumbing from freezing in winter in Quebec

How to protect your plumbing from freezing in winter in Quebec

Every winter in Quebec, thousands of homeowners are left with frozen pipes. The result? Faucets that no longer flow, cold showers, and sometimes major water damage.

The good news is that this problem can be easily prevented with a few simple actions. This article explains what to do to protect your plumbing before and during the cold season and extreme cold, without technical jargon.

What to remember

  • A pipe can freeze as soon as the temperature drops below -7°C
  • Risk areas: exterior walls, garage, crawl space and attic
  • Acting quickly prevents cracks and costly water damage
  • A service of 24/7 emergency can intervene if the situation escalates
  • Prevention is still the best protection against frost

Why do pipes freeze in winter?

Water that stagnates in your pipes turns into ice when the temperature drops. As it freezes, it increases in volume and exerts pressure on the walls of the pipe. The most vulnerable pipes are those located in unheated or poorly insulated areas.

Les signes qui indiquent un problème

Signs that indicate a problem

The first sign of a frozen pipe is often reduced or no water flow at a faucet. You may also notice visible condensation or frost on an exposed pipe or hear an unusual noise in the walls when you turn on the water.

A sewer odor coming from a drain can also signal a blockage caused by frost. If you see any of these signs during a cold snap, act quickly.

Frozen pipes what to do: the immediate steps

Situation Ce que ça signifie Quoi faire
Robinet sans eau, pas de fuite visible Tuyau probablement gelé Localiser et réchauffer doucement la conduite
Fuite active ou fissure Tuyau éclaté Fermer l'eau immédiatement et appeler un plombier
Plusieurs robinets touchés Gel près de l'entrée d'eau Contacter un service d'urgence 24/7

Important : Never use an open flame to unfreeze a pipe. Choose a hair dryer, a heat lamp or towels soaked in hot water.

Tips to insulate pipes effectively against frost

La Prevention remains the best approach. Before the cold weather arrives, install insulation sleeves on exposed pipes and seal cracks in walls and foundations near pipes. These materials are available in any hardware store.

On very cold nights (-15°C and below), let a trickle of water flow and open the cabinet doors under the sinks located against an exterior wall. Always maintain the heating to at least 10°C, even if you are away for a long time.

According to the City of Montreal, it is also essential to Turn off the outside faucets and to drain the garden hoses before the first frost.

Les erreurs à éviter

Mistakes to avoid

  • Wait that the problem can be solved by itself — a frozen pipe can burst in a few hours
  • Use a blow torch to speed up the thaw — risk of fire and damage
  • Neglecting unheated areas — this is often where frost hits first
  • Turn off the heat completely during a winter absence

When to call a plumber

The intervention of a qualified plumber is required when the pipe is inaccessible, for example in a wall or under the slab. This is also the case if you notice a leak or crack, if several areas of the house are affected simultaneously, or if you cannot locate the blockage.

A service of 24/7 emergency can avoid major damage, especially at night or during the weekends.

Winter best practices

To spend the winter in peace, Have your plumbing inspected in the fall. Locate the location of your main stop valve in order to be able to shut off the water quickly in the event of a leak. Also, keep a reliable plumber's number handy.

The Régie du Bâtiment du Québec recommends that plumbing work be carried out by contractors with a valid license.

Protégez votre maison avant le prochain gel

Protect your home before the next freeze

One frozen pipe is not inevitable. With a few simple precautions, you can protect your plumbing and avoid unpleasant surprises. And if the problem occurs anyway, now you know What to do to limit the damage.

Do you have doubts about the condition of your plumbing or need a quick intervention? Our team is available to assess your situation and advise you on the next steps.

Contact us for a free quote.

FAQ

À quelle température les tuyaux risquent-ils de geler? Le risque commence autour de -7°C, surtout pour les conduites mal isolées ou situées dans des zones non chauffées.
Peut-on utiliser de l'antigel dans les tuyaux d'eau potable? Non. L'antigel domestique est toxique. Il est réservé aux systèmes de chauffage fermés ou aux chalets qu'on hiverne.
Combien de temps faut-il pour qu'un tuyau gelé éclate? Cela peut prendre de quelques heures à quelques jours selon la pression et l'épaisseur du tuyau. N'attendez pas pour agir.
Mon assurance couvre-t-elle les dégâts causés par un tuyau gelé? Généralement oui, si vous avez pris des mesures raisonnables de prévention. Vérifiez les conditions de votre police.
Dois-je laisser couler l'eau toute la nuit lors d'un grand froid? Un simple filet d'eau suffit. L'eau en mouvement gèle moins facilement que l'eau stagnante.

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