Top Roofing Contractors in Quebec

Quebec's roofing market is shaped by two dominant roof forms that reflect its building stock. On single-family houses and bungalows, architectural asphalt shingles cover the majority of pitched roofs, while the flat and low-slope roofs found on Montreal's characteristic duplexes, triplexes and rowhouses across neighbourhoods like the Plateau, Rosemont and Hochelaga are almost universally waterproofed with an elastomeric (SBS modified-bitumen) membrane. Metal roofing, chosen for its longevity and its ability to shed snow, occupies a growing niche on both older heritage homes and rural properties.

The province's climate is the decisive driver of material choice. Quebec sees heavy snowfall — Montreal averages roughly 210 cm per winter and Quebec City about 315 cm, among the snowiest of Canada's major cities — combined with deep freeze-thaw cycling and temperatures that regularly fall below -25 °C. These conditions concentrate demand around snow-load capacity, ice-dam prevention and materials that stay flexible in extreme cold. SBS membrane remains pliable in deep cold, which is why it is the standard for the province's many flat roofs.

Ice dams are among the most common causes of roof-related water damage in Quebec, forming when attic heat melts roof snow that then refreezes at the cold eaves. Because of this, demand extends well beyond the roof covering itself to attic ventilation, insulation and eave-protection membranes. The prevalence of older masonry duplexes and triplexes with flat roofs also sustains a large repair-and-membrane-renewal market alongside full replacements.

Licensing & Regulations

In Quebec, roofing replacement and renovation is regulated by the Régie du bâtiment du Québec (RBQ). Any person or company carrying out construction or renovation work — including roof replacement — is required to hold a valid RBQ contractor's licence, and must also hold the specific subclasses that cover the work being performed. Homeowners are advised to ask a contractor for their licence number and confirm it in the RBQ's online licence-holder repertory before signing. Some pure maintenance tasks, such as snow removal or de-icing carried out to preserve the roof, can fall outside the licence requirement.

Typical Costs

Replacing an asphalt-shingle roof on a typical single-family home in Canada runs about C$6 to C$13 per square foot, or roughly C$10,000 to C$18,000 for a full replacement in 2026, according to a national industry cost guide. Quebec typically sits toward the upper end because of higher provincial labour costs, and winter (November–March) installations often carry a labour surcharge tied to cold-weather adhesive limits and snow clearing. Elastomeric (SBS) membrane for flat roofs is priced higher, in the range of C$12 to C$18 per square foot installed.

Do I need a permit to replace my roof in Quebec?

Permit rules are set by your municipality, so requirements vary between cities such as Montreal, Quebec City and Laval; check with your city before work begins. Separately, the contractor you hire must hold a valid Régie du bâtiment du Québec (RBQ) licence for roof replacement. Confirm the licence number in the RBQ's online repertory before signing a contract.

What is the best roofing material for Quebec winters?

It depends on the roof's slope. For pitched roofs, architectural asphalt shingles are the affordable standard, while metal roofing lasts longer and sheds snow more readily. For the flat and low-slope roofs common on Montreal duplexes and triplexes, an elastomeric SBS modified-bitumen membrane is the standard choice because it stays flexible through deep freeze-thaw cycles.

Why do I keep getting ice dams, and can roofing fix them?

Ice dams form when heat escaping into the attic melts roof snow that then refreezes at the colder eaves, trapping water that can back up under the covering. They are a leading cause of roof-related water damage in Quebec. The durable fix is usually improved attic ventilation and insulation plus an eave-protection membrane, not the roof covering alone.

When is the best time to have a roof replaced in Quebec?

Late spring through fall is generally preferred, because asphalt shingle adhesives seal reliably in warmer temperatures and crews avoid snow clearing. Winter installations (roughly November to March) are possible but often carry a labour surcharge due to cold-weather adhesive limits and added snow-removal time. Booking ahead for the warm season also widens your choice of licensed contractors.