Replacing your roof isn't something you do often in life. And when the time comes, the choice of material carries significant weight: it directly impacts your home's durability, future maintenance costs, and the long-term value of the building. Quebec winters are unforgiving of poor choices. Freeze-thaw cycles, heavy spring rains, strong autumn winds: some coverings handle all of this very well, others much less so. This guide helps you make the best choice for your type of roof.
Before comparing materials, only one question truly matters: is your roof flat or sloped ? This detail determines everything else. The slope determines the possible roofing types, and therefore your actual options on the market.
In Quebec, the Construction Code in force in 2026 (NBC 2020 as amended by Quebec), administered by the Régie du bâtiment du Québec (RBQ), sets minimum slopes by material. Some coverings simply cannot be installed on certain types of roofs. A certified roofer can quickly assess during an inspection, and this is information to have even before you start shopping around.
In practice, the table in article 9.26.3.1. of the Quebec Construction Code sets these minimums: 1:3 (4/12) for standard asphalt shingles, 1:6 (2/12) for low-slope shingles, 1:4 (3/12) for profiled metal and 1:2 (6/12) for slate and tile. Our guide on minimum roof slope by material covers the details.
It's hard to miss asphalt shingles in Quebec. They dominate the residential market for a simple reason: they offer a good balance of price, ease of installation, and durability. Available in a wide range of colors, they fit in equally well in a dense urban neighborhood or a more residential area.
Their lifespan is generally between 15 and 25 years, depending on the shingle quality, installation, and ongoing maintenance. A localized repair remains simple to carry out without having to redo everything, which is a concrete advantage when a problem arises between two full replacements. For homeowners looking for a good roofing type without exceeding their budget, this is often the starting point.
Note: fiberglass shingles, lighter and more moisture-resistant, are gaining popularity for projects where the weight on the roof structure is a real constraint.
For flat or low-slope roofs, the elastomeric membrane is the clear choice. It's the Quebec standard because it holds up well against rainwater, tears, and significant temperature fluctuations, three constant realities in our climate.
When properly installed and maintained, it lasts between 25 and 30 years with minimal intervention. Unlike some gravel-covered roofs, it remains easy to inspect. An annual visit is enough to spot the first signs of wear before they turn into major repairs. For thermal comfort, proper installation also makes a real difference in winter heating costs.
Its installation requires the involvement of qualified professionals, but its longevity justifies the investment. Over 30 years, it's often the most economical option for flat roofs.
The metal roof, whether made of sheet metal, steel, or aluminum, was long associated with barns and cottages. That image has changed considerably. Today, it's integrated into modern residences and commercial buildings, and its advantages speak for themselves: relative lightness, resistance to strong winds, and rapid rainwater drainage.
Its lifespan commonly exceeds 50 years, with virtually no maintenance. A more expensive covering upfront, but one that lasts half a century, often ends up being cheaper than an affordable option that needs to be replaced twice. For owners who consider total cost, the math is clear. Steel decking deserves special mention: valued for its strength-to-weight ratio, it withstands heat, humidity, and harsh weather conditions well.
Other materials exist, although they are less common in Quebec. Terracotta tiles are appealing for their rustic charm and good thermal comfort properties, but their weight places serious constraints on the roof structure. Natural slate is a high-end option, valued for its longevity and aesthetics, but its cost and weight limit its use to specific projects. Wood shingles have an undeniable natural look, but require rigorous maintenance due to Quebec's humidity. As for TPO or EPDM membranes, these are mainly for large commercial buildings with flat roofs with large surface areas.
| Roofing Material | Roof Type | Lifespan | Maintenance | Ideal For |
| Asphalt Shingles | Pitched (≥ 2:12) | 15 to 25 years | Moderate | Residential, budget-friendly |
| Elastomeric Membrane | Flat or low-slope | 25 to 30 years | Low | Flat roofs, houses or buildings |
| Steel / Aluminum | Pitched or flat | 50 years and more | Very low | Long-term durability |
| Tile (Terracotta) | Pitched | 50 years and more | Low | Rustic charm, mild climate |
| Slate | Pitched | 75 years and more | Very low | Prestige, long-term investment |
| TPO / EPDM | Flat or commercial | 20 to 25 years | Low | Commercial properties, large buildings |
On the budget side, published 2026 ranges for Quebec (supplied and installed) are roughly $6 to $12/sq. ft. for asphalt shingles, $10 to $20/sq. ft. for elastomeric membrane and $13 to $30/sq. ft. for steel or aluminum. Tear-off of the old covering, damaged decking and a complex roof (valleys, dormers) push the bill higher.
Start by having your roof inspected by an RBQ-certified roofer. They will assess the condition of the structure, measure the slope, and identify any specific constraints of your building. This information directly influences your material options. Having this overview before comparing products prevents you from shopping aimlessly.
Also consider your time horizon. Are you ready to re-roof in 15 years? Shingles will do the job. Do you prefer to invest once and not have to worry about it for several decades? Metal or membrane roofing become serious options. Your home's location also plays a role : significant exposure to strong winds, heat, or heavy rains affects how materials perform over time.
Maintenance makes a real difference in longevity, regardless of the chosen material. An inspection every spring, after the snow melts, allows you to catch signs of wear before they worsen. Clearing accumulated leaves and debris near flashing and water drains is a simple habit to adopt. Attic ventilation also deserves attention : good thermal insulation directly slows down the aging of roofing materials. If in doubt, it's best to consult a roofer without delay.
The right roofing material is one that matches your roof, your budget, and your durability expectations. Asphalt shingles perform well on sloped roofs. Elastomeric membrane remains essential for flat roofs. Steel or aluminum are the go-to options for those seeking the most durable solution on the market. Take the time to assess the situation with a professional: your home's roof deserves this attention before you make a decision.
Do you want to know which roofing material is right for your roof? The 123Couvreur team can connect you with RBQ certified roofers in your area.
Contact us and receive up to 3 free quotes to compare your options with peace of mind.
No. Asphalt shingles require a minimum slope of 2:12. On a flat roof, an elastomeric membrane or another waterproof membrane is required to prevent rainwater infiltration and ensure the roof remains watertight.
Between 25 and 30 years, with proper installation and maintenance. An annual inspection by a professional helps identify early signs of wear before they turn into costly repairs.
Yes, absolutely. Steel and aluminum are excellent choices for residential properties. Their lifespan exceeds 50 years, and their many advantages against strong winds and heavy rainfall more than compensate for the higher initial cost.
The slope of your roof is the primary factor, followed by your budget and durability expectations. An RBQ-certified roofer can evaluate all these factors during an inspection and recommend the right roofing system for your situation.
It depends on your municipality. The Quebec Construction Code (Chapter I, Building, version in force since April 17, 2025) is the reference, but each city has its own requirements. Check with your municipality before starting the work; it is a simple step that can help you avoid unpleasant surprises.
There are usually two: the manufacturer's warranty, which mainly covers the material and requires installation and ventilation that follow its instructions, and the contractor's workmanship warranty, set out in the contract. The GCR warranty applies to new residential buildings, not to a roof replacement.
