In Montreal, a standard-quality roofing renovation runs $8,426 to $17,531, prices below the Canadian average (index 93). A budget version starts around $5,899 and premium work reaches $28,049.
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| Line item | Range | Share |
|---|---|---|
| Shingles | $1,367 – $2,734 | 23 % |
| Underlayment | $365 – $684 | 6 % |
| Flashing | $326 – $781 | 6 % |
| Ventilation | $260 – $586 | 5 % |
| Gutters | $651 – $1,628 | 13 % |
| Tear-Off & Disposal | $977 – $1,953 | 16 % |
| Labour | $1,953 – $3,906 | 32 % |
Included
Not included
| Line item | Range | Share |
|---|---|---|
| Shingles | $1,953 – $3,906 | 23 % |
| Underlayment | $521 – $977 | 6 % |
| Flashing | $465 – $1,116 | 6 % |
| Ventilation | $372 – $837 | 5 % |
| Gutters | $930 – $2,325 | 13 % |
| Tear-Off & Disposal | $1,395 – $2,790 | 16 % |
| Labour | $2,790 – $5,580 | 32 % |
Included
Not included
| Line item | Range | Share |
|---|---|---|
| Shingles | $3,125 – $6,250 | 23 % |
| Underlayment | $833 – $1,562 | 6 % |
| Flashing | $744 – $1,786 | 6 % |
| Ventilation | $595 – $1,339 | 5 % |
| Gutters | $1,488 – $3,720 | 13 % |
| Tear-Off & Disposal | $2,232 – $4,464 | 16 % |
| Labour | $4,464 – $8,928 | 32 % |
Included
Not included
In Montreal, Quebec, a standard-quality roofing renovation typically costs between $8,426 and $17,531 in 2026 — prices are below the Canadian average, with a local cost index of 93%. Expect around 2 to 5 days of work and a 60–70% return on investment at resale. Ice-and-water shield along every eave and valley plus R-60 attic insulation will prevent 80% of the ice-damming and condensation issues typical to this climate.
Same job in Laval: $8,063 – $16,777 at standard quality, about 4 % cheaper than Montreal on our cost index.
The flat roof is what makes Montréal roofing different from the rest of Canada: most plexes carry a low-slope membrane, not shingles, and a re-roof is a membrane job priced by surface and by the state of the insulation underneath. Sloped roofs with asphalt shingles are the norm in the West Island and the newer boroughs. On a plex held in divided co-ownership the roof is a common element: the syndicate orders the work and your share goes through the reserve fund or a special assessment.
Authority: Ville de Montréal, your borough’s permit counter
Guide: Renovating in Québec: licences, taxes, permits and programs (2026)
Roof replacement timing matters in Canada — most roofing contractors are busiest from May to October. Book in late winter for the best pricing and scheduling. Asphalt shingles remain the most popular choice (85% of Canadian homes) with a 20–30 year lifespan. Metal roofing costs 2–3x more upfront but lasts 50+ years and handles snow loads better. Always get a written warranty that covers both materials and workmanship.
Roof pitch (steepness) significantly affects cost — steep roofs (8/12+) require extra safety equipment and time. Multiple layers of old shingles requiring removal add $1,000–$3,000. Skylight additions cost $1,500–$4,000 each. Ice and water shield membrane in valleys and edges adds $500–$1,500 but is essential in Canadian climates.
Pro tip
Ask your contractor about upgrading to impact-resistant (Class 4) shingles — some home insurance companies offer 10–28% premium discounts for hail-resistant roofing, which can offset the higher material cost over time.
Montréal's renovation market is a plex market: duplexes and triplexes with shared walls, common elements and a syndicate when the building is a divided co-ownership. A large, bilingual pool of RBQ-licensed contractors serves it, and the cost index sits between Québec City and Toronto.
Cold winters, hot humid summers and repeated freeze-thaw: insulation, air sealing and materials rated for it matter more than in milder cities. Snow load is a design factor for roofs, and ice dams are common on older homes without proper attic ventilation.
In 2026, a roofing renovation in Montreal costs between $5,899 (budget) and $28,049 (premium). The average standard cost ranges from $8,426 to $17,531.
The three most common options in Canada: a variable-rate HELOC against your home equity, a fixed-rate renovation loan from your bank (5–10 year terms), or a mortgage refinance if you have substantial equity. For projects under $15,000, a 0% balance-transfer credit card can bridge 12–18 months. Avoid contractor-offered financing — those rates often exceed 12%.
Demolition, painting, baseboards, and small fixtures are jobs many homeowners take on themselves. Avoid touching plumbing, electrical, or gas without permits and inspection — most municipalities prohibit it, and bad workmanship can void your home insurance. On a typical Montreal project, DIY can shave 10–20% off the total.
For Montreal, the ideal window is late spring through early fall (May to September) for any work touching the building envelope. Book your contractor 4 to 8 weeks ahead during peak season — last-minute scheduling typically pushes the start date much further than an off-season project would suggest.
The most common surprises: code-compliance electrical upgrades ($1,500–$4,000), plumbing issues uncovered when walls are opened, asbestos or lead-paint abatement in older homes, and permit fees not included in the initial quote. Plan for a 15–20% contingency on top of the base budget in Montreal.
Complete guide
Read our complete national guide to roofing costs