Découvrez comment préparer votre maison avant la pose d’un nouveau plancher: sous-plancher, humidité, meubles, acclimatation et vérifications finales.

La réussite d’un nouveau plancher dépend en grande partie de la préparation effectuée avant son installation. L’état du sous-plancher, le taux d’humidité dans la maison et l’ordre dans lequel les différents travaux sont réalisés peuvent déterminer si les lames resteront bien à plat ou si elles finiront par se déformer, s’écarter ou se soulever après seulement quelques mois.

Préparer sa maison avant l’installation d’un nouveau plancher

Comparez le quartz, le granit, la quartzite, la porcelaine et le marbre pour choisir le meilleur comptoir pour votre rénovation de cuisine.

Les comptoirs représentent l’un des investissements les plus importants dans une rénovation de cuisine, juste après les armoires. Ils influencent l’apparence de la pièce, son niveau de fonctionnalité et sa capacité à résister à une utilisation quotidienne.

Comptoirs de cuisine: quel matériau choisir pour votre rénovation?

Découvrez nos astuces pour une rénovation salle de bain avec un petit budget : matériaux économiques, conseils pratiques et idées pour économiser.

Rénover une salle de bain peut rapidement devenir coûteux, surtout lorsqu'il faut remplacer les équipements, refaire la plomberie ou installer de nouveaux revêtements. Pourtant, il est possible de moderniser une salle de bain à petit prix en faisant des choix judicieux.

Rénover une salle de bain à petit prix : conseils et astuces pour économiser

<b>A backwater valve is a one-way gate on the sewer line leaving your house, and installing one costs $1,000 to $4,800 across Canada.</b> When the municipal sewer surcharges during a storm and wastewater tries to flow backward toward your home, the valve closes and keeps it out of your basement.

Against that cost, the average basement flood in Canada runs between $40,000 and $80,000, and many major municipalities subsidize part of the installation. This guide covers how the device works, what it costs in your region, which rebate programs apply, and how to tell whether your home needs one.

A backwater valve is a simple mechanical device with no power supply and no moving parts beyond a hinged flap.

Under normal conditions, wastewater flows from your building drain out through the lateral to the municipal sewer. The flap hangs open, held out of the way, and water passes freely beneath it.

When the city sewer surcharges, reverse flow pushes water back toward your house. That pressure catches the flap and swings it shut against a seal, closing the pipe. Sewage backup stops at the valve rather than emerging through your floor drain.

Once pressure equalizes, the flap drops back open and normal drainage resumes automatically.

Municipal sewer backups happen when the system takes on more volume than it was designed to carry. Heavy rain, rapid snowmelt, or a blockage downstream can all cause it.

In cities with a combined sewer system, where stormwater and wastewater share the same pipe, the risk is considerably higher. Older sections of Toronto, Montreal, Winnipeg, Calgary and Halifax all have combined systems, and a summer thunderstorm can overwhelm them in minutes. The excess has to go somewhere, and the nearest low opening is your basement floor drain.

A backwater valve stops water coming from the sewer. It does nothing about <a href="https://renoquotes.com/en/blog/foundation-waterproofing-costs">groundwater seeping through foundation cracks</a>, water entering through basement windows, or water collected by your weeping tile.

<a href="https://renoquotes.com/en/blog/what-is-a-sump-pump-and-how-does-it-protect-your-home">That's the sump pump's job</a>. Many Canadian homes need both, and the two devices address entirely different pathways into the basement.

The job includes the valve itself, cutting the concrete, excavating to the sewer line three to five feet below the basement floor, installing the valve in the correct orientation, backfilling, restoring the slab, and coordinating the permit and inspection.

Interior installation is the most common and the less expensive of the two. Exterior installation costs more because of the excavation involved, but it's sometimes the only option depending on how your lateral runs.

The spread reflects labour rates and, in older cities, how deep the lateral sits. A typical Toronto job averages around $2,800, while the same work in Edmonton commonly comes in at $1,000 to $2,000.

Budget 15% to 20% contingency. Older homes routinely present surprises once the slab is open.

Many Canadian municipalities subsidize backwater valve installation, because preventing residential flooding costs them far less than the sewer upgrades and emergency response it replaces.

Amounts and eligibility vary enormously, and some cities offer nothing at all. The figures below are a starting point, not a guarantee.

Quebec municipalities including Montreal, Laval and Gatineau run periodic grant programs, though availability changes year to year.

Calgary is worth singling out because its combined sewer neighbourhoods carry real backup risk while the City offers residential homeowners no rebate. Calgary homeowners pay the full installation cost, which makes the case for doing it anyway rest entirely on the $40,000 to $80,000 avoided.

Confirm directly with your city's water or wastewater department before assuming a rebate exists.

Toronto's is the most generous in the country and was expanded on May 1, 2026, nearly doubling the previous cap. The expanded amounts apply retroactively to eligible work completed on or after November 12, 2025.

Those five components together reach the $6,650 per-property maximum.

On a typical $2,800 interior installation, the 80% rule caps at the $1,600 maximum, bringing the net cost to roughly $1,200.

The home plumbing assessment is optional, not a precondition. It's subsidized at 80% up to $500 and worth doing if you're unsure what your drainage configuration looks like, but a valve installed under a valid permit by a licensed plumber and passing inspection qualifies without one.

If you see an article citing $1,250 or a $3,400 program cap, it predates the May 2026 expansion.

EPCOR delivers Edmonton's subsidy on behalf of the City, and eligibility is considerably narrower than Toronto's.

To qualify, your home must have been built before 1989 — the year Edmonton bylaws began requiring backwater valves in new construction — must have experienced prior basement flooding from a sanitary sewer backup or sit in a section of the city with previous neighbourhood flooding, and must not already have a valve.

EPCOR offers free flood inspections and recommends arranging one, though the subsidy application itself is submitted after installation. You'll need the City of Edmonton green sticker with the permit number, a professional installation invoice showing the valve model and the contractor's business licence or GST number, and a completed application form.

The subsidy pays up to $800 by cheque to the homeowner. Funding is first-come, first-served with no guarantee.

Strathcona County runs a comparable program with the same pre-1989 rule, for properties serviced directly by county sewers.

Processing takes several weeks to several months. Toronto typically runs 8 to 16 weeks.

These two devices are frequently confused, and the distinction matters because they solve unrelated problems on opposite sides of your plumbing.

Installed on the drainage side, on the pipe carrying wastewater away from your home. It's about keeping sewer backup out of your basement.

Installed on the potable water system, on the incoming side. It stops water that has left your clean supply from flowing back into it.

The classic scenario is an irrigation system: a sprinkler head sitting in a puddle of fertilizer-treated water, and a pressure drop in the municipal main creating suction. Without a backflow preventer, that contaminated water can be drawn back into the drinking supply.

Municipal by-laws typically require a backflow preventer on any irrigation connection, and often on landscape drainage systems tied into the potable supply. They carry a small pressure loss penalty, which is normal and designed in.

If you have an in-ground sprinkler system, you likely need both devices — a backflow preventer on the supply and a backwater valve on the drain. They're separate installations, and in some municipalities different trades handle each.

Some homes carry elevated sewer backup risk regardless of whether symptoms have appeared yet.

Check the lowest level of your basement, typically near the front foundation wall where the main sewer line exits the house.

Look for a circular plastic access lid flush with the concrete floor, often with a transparent cover. Opening it lets you see the internal flap mechanism.

If you can't find one, a licensed plumber can run a camera inspection or perform a home plumbing assessment to determine your drainage configuration. Several municipal programs subsidize that assessment, and EPCOR offers free flood inspections in Edmonton.

The average basement flood in Canada costs between $40,000 and $80,000 in total damage. A backwater valve costs $1,000 to $4,800 installed, and often far less after a municipal rebate.

That arithmetic doesn't require much elaboration. Property protection at this ratio is among the clearest value propositions in home maintenance, and it holds even in cities like Calgary where no rebate is available.

Sewer backup coverage is typically an optional rider on Canadian home insurance, not standard coverage. Some insurers now require a backwater valve for full coverage eligibility, and others offer premium reductions once one is installed.

Ask your insurer directly. A documented installation with a permit and inspection is what they'll want to see.

Sewage entering your home is not the same as a water leak. Contaminated water means the finished flooring, drywall, insulation and <a href="https://renoquotes.com/en/blog/how-much-does-mould-remediation-cost-in-canada">anything porous in its path comes out</a> rather than being dried.

That's why floodwater backing up through a floor drain into a finished basement produces such large restoration bills. A valve prevents the category of damage, not just the volume.

The less quantifiable benefit, but real: a backwater valve operates automatically and needs no intervention during a storm. You don't have to be home, awake, or aware that the sewer is surcharging.

Subsidy programs exist precisely because municipalities have run the same arithmetic. Preventing residential flooding costs a city far less than the sewer capacity upgrades and emergency response it replaces.

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The valve installs on the building drain, on the main sewer line where it exits the house, downstream of every fixture it protects.

Placement matters. A valve installed in the wrong position protects only part of the house, leaving fixtures downstream of it exposed. The plumbing layout determines the correct location, which is one reason a home plumbing assessment often precedes the work.

Shutoff access is mandatory. The valve requires an accessible cover for inspection and maintenance, and it cannot be buried under finished flooring.

Installation requires a building permit in virtually every Canadian municipality. Provincial plumbing codes, including the Ontario Building Code and its equivalents in other provinces, treat this as work affecting the drainage system.

A house fire is as unpleasant as it sounds, need I say more? So, here are some fire prevention tips for your home. 

Your home is important, providing a place to nest, offering shelter to loved ones and giving you a space to rest your head. Of course, to make sure your house is in good working order, you need to keep everything in good shape while working with the best materials.

How to Fireproof Your Home 

If your roof has concave angles, you will need to install roof valleys to ensure that rainwater trickles down to the gutters. Check out this article for a step-by-step installation guide. 

When it comes to re-roofing, your main concerns are likely to be preventing future water infiltration and choosing a durable coating.

How to Install Roof Valleys

What are the steps for becoming a renovation contractor in Quebec? Learn everything from obtaining an RBQ licence to signing contracts to incorporating your business, etc.

Becoming a renovation contractor is an exciting career path. It’s a trade perfectly suited to those who enjoy change and are skilled in manual tasks. Also, there’s nothing like working hard and putting in the effort to complete a construction or renovation project.&nbsp;

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