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Living in Toronto means your roof deals with a lot. Between freeze-thaw cycles, ice dams, summer UV, and the occasional windstorm, your roofing system (whether asphalt shingles, a metal roof, or a flat roof) takes more abuse here than in most Canadian cities. A solid roof is the single biggest protector of your home's value, and the best roofing companies in Toronto know how to build one that actually lasts.
If you're planning a full replacement, switching from shingles to metal, or lining up a repair before winter, the right roofer makes the difference. Below are five roofing companies across the Greater Toronto Area worth getting a quote from.
Metal roofing specialists serving the GTA. 20+ years of roofing experience.
With 20+ years of roofing experience, Seam Roofing specializes in one of the toughest roofing systems available in Canada: metal roofing. Fully licensed and WSIB-registered, they serve homeowners across Toronto, Mississauga, Vaughan, Oakville, Hamilton, and within 100 km of the Greater Toronto Area. Homeowners can browse a full portfolio of completed residential and commercial roofing projects before booking, a level of up-front transparency that's uncommon in the roofing trade.
Metal roof vs. asphalt shingles: cost and longevity. A metal roof lasts many decades (often the full lifetime of the home) compared to 15–20 years for a typical asphalt shingle roof. Over a 50-year period, a homeowner usually replaces shingles two or three times at around $15,000 each time, while a metal roof costs roughly $12,000–$20,000 once and stays put. Metal roofs carry a Class A fire rating, handle 150+ km/h winds, lock together to form a fully waterproof surface, and shed snow cleanly so ice dams don't build up at the eaves. All of this is highly relevant in Toronto's freeze-thaw climate.
Metal also reflects solar heat, which cuts summer cooling costs, and buyers often pay a premium for homes with a metal roof. At the end of life, metal is 100% recyclable, unlike asphalt shingles, which typically end up in landfills.
That said, Seam Roofing is genuinely good at traditional asphalt shingle installations too; they're a big share of the day-to-day work. The same crews and the same 10-year workmanship warranty apply. Seam Roofing installs shingles from leading manufacturers with material warranties, and every installation includes an inspection, a full tear-off, proper underlayment, and attic-ventilation checks. For homeowners who want a lower upfront cost without giving up craftsmanship, Seam Roofing's shingle jobs are a legitimate option, not a consolation prize.
Seam Roofing also installs flat roofing systems for low-slope residential, additions, and mid-rise commercial properties, with EPDM, TPO, and modified bitumen options.
On the credibility side: $2 million in residential liability insurance, WSIB-registered and in good standing, a 10-year workmanship warranty, manufacturer warranties ranging from decades up to lifetime on select metal products, and a 5/5 rating on Google from homeowners across the GTA. Seam Roofing offers free no-obligation consultations and written quotes with options.
A+ Steel Roofing is a GTA-wide metal-roofing specialist built on the promise "Built for Canadian Weather." The nine-year-old company installs metal roofs, aluminum eavestroughs, vented soffits, and custom metal siding throughout Toronto, Mississauga, Brampton, Caledon, Markham, and Oakville. Every installation is backed by a 10-year workmanship warranty and lifetime manufacturer warranties on the metal itself, and crews are fully licensed for working at heights.
Good Choice Roofing bills itself as the "cottage roofing experts," with service extending from the GTA all the way up through Barrie, Peterborough, Bracebridge, Huntsville, and Kawartha Lakes. With 10+ years in business, they handle shingle and flat roofs, metal roofing, eavestrough, soffit, siding, skylights, and emergency repairs, all backed by a 15-year warranty. Bilingual service is available in English and Mandarin.
Based in Richmond Hill and in business since 1990, Aylen Art Roofing is one of the longest-standing roofing companies in the GTA. The team installs, repairs, and restores residential roofs across the region and handles adjacent work: gutters, siding, skylights, ventilation, and roof coatings. Their pitch is precision, durability, and bespoke craftsmanship, with 24/7 emergency response available for storm damage.
Vertical Roofing has spent 20+ years protecting homes across the Greater Toronto Area. As a BP and IKO Certified Contractor, the team installs shingles, metal, flat roofs, skylights, gutters, and offers 24/7 emergency tarping for storm-damaged roofs. Free estimates and inspections are standard, and the company backs both materials and workmanship with warranty coverage.
Frequently Asked Questions
Which is better, a metal roof or asphalt shingles?
It depends on your horizon. If you plan to sell in under 10 years, asphalt shingles are cheaper upfront and still a solid choice. If you're staying long-term or care about your home's resale value and protection, a metal roof usually wins. It lasts many times longer, handles Toronto's wind and ice loads better, and most homeowners only buy one in a lifetime.
Is a metal roof really worth the extra cost in Toronto?
Over a 50-year horizon, for homeowners who plan to stay: usually yes. A metal roof, on average, costs $12,000–$20,000 to install and can last the lifetime of the home, while asphalt typically needs replacing every 15–25 years at about $15,000 per cycle. Metal also carries a Class A fire rating and 150+ km/h wind resistance, which the majority of asphalt shingles can't match.
How long does a new roof in Toronto typically last?
Asphalt shingles typically last 15–20 years in Toronto's climate, depending on grade and ventilation. Metal roofs last from several decades up to the lifetime of the home. Flat EPDM and TPO systems run 20–30 years with proper maintenance. Roofing specialists like Seam Roofing pair those material lifespans with multi-decade manufacturer warranties.
When is the best time of year to replace a roof in Toronto?
Spring through early fall is ideal in Toronto, ideally booked before the mid-autumn storm season brings consistent rain and the first snow. Asphalt shingles require warm enough temperatures to seal their adhesive strips properly, so installers generally avoid deep-winter installations. Metal roofs are more forgiving of shoulder-season weather since they rely on mechanical seams rather than heat-activated bonds. Emergency repairs can happen year-round if a roof is leaking.
How much does a new roof cost in Toronto?
$8,000–$18,000+ for asphalt shingle replacement, $12,000–$20,000+ for a metal roof, and variable pricing for flat roofs depending on material. Final pricing depends on roof size, slope, tear-off complexity, product grade, and warranty depth. These are averages, not quotes. Toronto roofing companies like Seam Roofing can provide you with multiple options based on your budget.
What should I look for when hiring a Toronto roofer?
Check that the company is WSIB-registered and carries at least $2 million in liability insurance. Ask for warranties on both labour and materials, and verify reviews on Google. A visible portfolio of past projects is a strong signal of trust.
Planning a roof replacement, repair, or upgrade this year? All five of these roofing companies are worth contacting. Get at least two written estimates, compare warranty terms and insurance coverage, and pick the team whose work you trust most.