Montréal · urgent repairs and planned work

Your Montréal plumber: the right next step for your building

An active leak, a backed-up drain or an installation to arrange? Plomberie LaSalle helps you explain the problem and organize plumbing service for your Montréal address.

Call 514 312-3198 with your borough or municipality, the symptoms and the type of building. We confirm availability, access requirements and the next steps. When you need an emergency plumber in Montréal, start by telling us whether water is still escaping or wastewater is coming back up.

Tell us what is happening · 514 312-3198

01 · Explain the problem

02 · Confirm building access

03 · Choose the next step

When the problem cannot wait

Need an emergency plumber in Montréal?

An actively leaking pipe, an overflowing toilet and a loss of hot water call for different priorities. Explain what is happening now, which rooms are affected and whether the flow can be safely limited. A phone conversation helps distinguish an urgent plumbing repair from work that can be scheduled with the people using the building.

Stop using the affected fixture. For a supply leak, close an accessible, clearly identified valve only when it is safe to do so; do not force a stuck handle. For a backup, avoid adding water to the drains and keep people away from contaminated areas. See our sewer backup service for the problems to report and the next steps to discuss.

From symptom to service

Montréal plumbing services for your actual need

Start with the observed problem rather than choosing a replacement before an assessment. A wet connection, reduced pressure and slow drainage can require different checks. Our service pages explain the options, what to prepare and the limits of each intervention.

Leaks, shutoff valves and water supply

Water beneath a sink, a seeping pipe or a valve that no longer closes calls for a check of accessible connections and the source of the water. Note whether it appears during use or even when every fixture is off. Water leak repair addresses the cause found during assessment; opening a wall or ceiling depends on the access required. For a main or exterior supply pipe, describe your water service line concern instead, including where the symptoms appear.

Blocked drains and recurring slow drainage

One slow sink may involve its own branch; several fixtures backing up together can point to an obstruction farther along. Identify the fixtures, floors and timing. Drain cleaning depends on the obstruction and available access. When a problem returns, a drain camera inspection may help examine an accessible section. Hydro jetting or pipe repair should follow an assessment of the situation, rather than a conclusion drawn only from a gurgling sound.

Hot water and plumbing fixtures

No hot water, a leaking tank or a toilet that keeps refilling: provide the model, location and visible condition of the equipment. Our electric water heater service covers repair or replacement options to discuss after assessment. For a toilet, basin or faucet, see plumbing fixture installation and repair. New equipment must fit both the connections and the available space. Confirm those details before ordering a different model or arranging cabinet work around it.

Homes, plexes, condos and businesses: arrange the right access

In a duplex or triplex, a pipe may serve more than one home. In a condominium, access to mechanical rooms or shared stacks may require the building manager. Describe exactly which units are affected, without assuming that a problem visible in your bathroom belongs only to your unit. A ceiling stain also does not establish where the leak began.

Our residential plumbing service covers repairs and installations to discuss for your building. Prepare the contact details of the person who can approve the work, provide valve access and arrange occupant notices if a shutdown is proposed. An intervention in one unit does not amount to an inspection of the entire building, and concealed conditions still need to be assessed.

Your address, the right area

Montréal boroughs and island municipalities

Service availability is confirmed for the address. Choose your area to find local service information, or call directly to describe your needs. LaSalle keeps its own local home page; this page brings together the broader Montréal regional choice. Downtown Montréal and Ville-Marie share one destination to keep the local information together.

Montréal boroughs

For LaSalle, use the Plomberie LaSalle home page. Pierrefonds-Roxboro and L’Île-Bizard–Sainte-Geneviève are grouped with the other West Island destinations to make it easier to find the relevant area in that part of the territory. For an address in Laval or north of Montréal, see our North Shore plumbing directory. For a building south of the river, find your city in the South Shore plumbing directory.

Independent island municipalities

The agglomeration’s municipalities, including Montréal-Est, Westmount, Côte-Saint-Luc, Hampstead, Montréal-Ouest and Mont-Royal, are independent municipalities rather than Montréal boroughs. Here, Mont-Royal means the Town of Mount Royal, distinct from Le Plateau-Mont-Royal. For water or construction procedures, contact the authority responsible for the property's address.

A better prepared visit

Three steps to move forward clearly

STEP 01Describe the problem and arrange access

Prepare the street address, floor, unit number and symptoms. Tell us whether one fixture or several water points are affected. Mention previous interventions, available photographs and constraints involving stairs, parking or a mechanical room. Identify both the person attending and the person authorized to approve work. Keep access clear without removing parts you do not recognize or opening a concealed installation yourself.

STEP 02Understand the proposal before work proceeds

On site, checks focus on the problem and the accessible areas agreed for the visit. We explain the proposed action, parts or access required and the limitations found. If a concealed condition changes the work, the scope and approval must be clarified before proceeding further. A targeted repair may be enough; a more extensive intervention needs concrete findings. Ask which observations support the proposed next step.

STEP 03Check operation and understand follow-up

After the work, the relevant checks concern the components handled and their operation. Ask which fixtures can return to use, what signs to watch for and whether another intervention is needed. Keep part references and useful observations for the owner or building manager. If symptoms return, record when they appear instead of trying several products in succession. A clear history is useful when assessing a recurring concern.

Municipal water and planned work: contact the right authority

A loss of supply affecting the whole building or several neighbours may require checking municipal notices alongside the private plumbing assessment. Distinguish a problem at one fixture from a problem affecting the entire supply. A lack of water does not by itself prove a frozen pipe, and a visible leak does not establish that the defective section is public infrastructure.

The City provides Montréal plumbing and sewer procedures (French) with borough-specific information. For the outside shutoff valve, consult the water service shutoff and location procedure (French). Confirm the conditions for your address before scheduling the work. Independent municipalities have their own contact and procedures. A general municipal resource does not mean every minor plumbing repair requires the same permit.

What affects the cost of a plumbing visit?

Pipe access, the location of the fault, required parts and the number of fixtures affect the work. A repair beneath an accessible sink differs from a concealed pipe or work needing a shared shutdown. Diagnosis, parts availability, municipal coordination and the number of visits also need to be considered. Explain access restrictions early so the proposed service can reflect the actual setting.

Ask what the proposal includes: travel, the intervention, supplies, checks and any follow-up. Clarify wall openings and restoration of finishes. A price offered without understanding the installation cannot replace a clear scope. Additional work discovered during the visit should be explained and approved before it is undertaken. For a planned request, use our contact page; for an active problem, call to explain the situation.

Which location details help when you call?

Give the street name and civic number rather than only a nearby landmark. Explain whether the entrance is reached from a lane, whether the space is below street level and whether someone else must unlock the building. Access through a yard can differ from access through a shared area. In a condo, ask the manager about entry arrangements before the visit.

If you are unsure which neighbouring area applies, provide the full address; choosing a page is not a condition of asking for help. For a supply interruption, mention whether immediate neighbours still have water and whether a works notice was received. These observations help direct the next checks without establishing a diagnosis on their own.

What our customers say

Tell us about your Montréal plumbing need

A leak, a blocked drain, a fixture to replace or work to plan: give us your area and the situation. Browse our plumbing services to choose a useful starting point. We confirm availability and the scope of service for your address.

514 312-3198

9286-5419 Québec inc.
RBQ 5688-9025-01