Mississauga, ON · Lifetime Aluminum Roofing
Metal Roofing in Mississauga, Ontario
Interlock® installs lifetime aluminum metal roofing in Mississauga, ON — 319 roofs completed since 1997 by certified local crews, every system backed by a transferable lifetime warranty.
Why Mississauga homeowners choose Interlock
Interlock Metal Roofing (Ontario) Ltd., founded February 27, 1998, is Mississauga, Ontario’s trusted metal roofing contractor and exclusive authorized installer of Interlock® Lifetime aluminum roofing systems; we provide roof replacement and re-roofing throughout Mississauga with professional local installation. The Interlock Lifetime Roofing System is engineered for performance, beauty, and durability—heavy-gauge aluminum sheds snow and resists freeze-thaw damage common to Mississauga winters, the Alunar® Coating System delivers reflective, energy-efficient cool-roof benefits for hot summer days, and fire-resistant construction adds safety and long-term protection against wind-driven rain and ice. Choose timeless slate, cedar-shingle, shake, Mediterranean tile, or standing-seam looks with the strength of metal, all backed by the Interlock Lifetime Warranty for homes in Mississauga, Ontario.
- 319 Roofs installed in Mississauga
- 1997First Mississauga installation
- 2026Most recent installation
- 5Verified local reviews
Roofing styles available in Mississauga
Every Interlock® system is heavy-gauge aluminum finished with the Alunar® coating — five architectural looks, one transferable lifetime warranty.
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Slate The dimensional look of natural slate at a fraction of the weight. -
Cedar Shingle Warm cedar-shake character that never rots, splits or curls. -
Shake Deep, hand-split shake texture in aircraft-grade aluminum. -
Mediterranean Tile Classic barrel-tile lines without the crushing tile weight. -
Standing Seam Clean vertical lines for modern and contemporary homes.
Interlock roofs we've installed in Mississauga
What Mississauga homeowners say
- ★★★★★
Aluminum Shingle Roof Review in Mississauga, ON (Installed 2022)
Review: May 15, 2023 Completion: May 12, 2023Bruce and the installation team were great to work with. Showed up on time, and were very professional throughout the installation process. Special shout-out to Tony the installer who was amazing during the instal. Very organized with product storage and thorough cleanup during and after every work day. And the final product looks amazing, better than was expected. Thanks to the whole Interlock team-Bruce, Tony (PM) and Tony (installer). Highly recommended company and team!! Positive:… Read more →
- ★★★★★
Mississauga, ON Metal Shingles Review - Copper Roof Installed 2018
Review: April 15, 2022 Completion: January 22, 2019I was very skeptical in the beginning about spending on this roof, which was more expensive than asphalt shingles roof. However, I am glad that I did it. Ray was very helpful and very professional. I love my new copper colored roof. My house is like a landmark. Positive: Responsiveness, Quality, Professionalism Services: Roof installation
- ★★★★★
Mississauga, ON Aluminum Roofing Review — 2-Day Installation (Installed 2020)
Review: June 15, 2021 Completion: April 22, 2020Bruce was excellent in explaining how the roof is installed. When the installers came in, they were awesome. They were quick and efficient and my roof was put on in 2 days - in cold and windy conditions. Positive: Responsiveness, Punctuality, Quality, Professionalism, Value Services: Roof installation
- ★★★★★
Aluminum Shingles Review in Mississauga, ON (Installed 2017)
Review: November 15, 2017 Completion: August 8, 2017The installers did exactly as the sales guy said they would. Safe clean professional install. No extra charges. 4 man crew were polite and courteous.
- ★★★★★
Mississauga, ON Metal Roofing Review — INTERLOCK Aluminum Roof (Installed 1998)
Review: October 27, 1998 Completion: March 19, 1998I would first apologize for such a delay in this letter. As you were aware, when we spoke to you, we had just purchased our house, and we’re still in the process of continuing with additional modifications, including the installation of your companies INTERLOCK ROOFING SYSTEM, We have had the new roof for the past six months, and I am astounded that so few people have taken advantage of such a roofing design. We have been through a few storms since the installation, and they were bad, however,… Read more →
Interlock Metal Roofing (Ontario) Ltd.
5 - 2800 Argentia Road, Mississauga, ON L5N 8L2 Canada
Metal roofing near Mississauga
Mississauga metal roofing FAQ
How does a metal roof handle Mississauga's annual snowfall and ice dams?
Interlock's four-way interlocking aluminum panels shed snow and ice reliably even in Mississauga's roughly 100 cm of annual snow. The smooth, slippery surface naturally prevents ice dams—snow slides off rather than forming the dams that plague asphalt roofs. With wind gusts reaching 111 km/h, the panels' 120 mph wind warranty ensures they remain secure during the heavy snow-and-wind events typical of Ontario winters. Snow guards are available if you need additional safety control.
Will freeze-thaw cycles damage an aluminum metal roof?
No. Aluminum actually thrives in freeze-thaw climates because it expands and contracts uniformly, and contains no iron—so it cannot rust from moisture trapped during Mississauga's approximately 90 freeze-thaw cycles per year. The Alunar 70% PVDF coating, applied to both sides and warranted 30 years against degradation, protects the self-healing oxide layer beneath. This design survives the repeated wet-freeze-dry pattern far better than asphalt, which becomes brittle and cracks under the same stress.
Can a metal roof rust in Ontario's wet climate?
Aluminum cannot rust because it contains no iron. Interlock uses roofing-grade 3105-H24 and 3003-H24 aluminum alloy, which forms a transparent, self-healing oxide layer that protects the material even when scratched. In climates like Mississauga, where nearly 750 mm of rain falls annually, this immunity is a tremendous advantage over steel roofing—which will eventually corrode and require costly repairs. The Guardian Warranty explicitly covers rusting (it won't happen), giving you complete peace of mind.
Can my house support a metal roof without expensive structural upgrades?
Yes. Interlock's aluminum panels are extraordinarily light—the Slate profile weighs just 0.41 lb per square foot, and even the Mediterranean Tile profile, which replicates heavy clay or concrete, weighs only about 0.59 lb/sq ft (roughly 96% lighter than the real thing). This means most Mississauga homes require zero structural reinforcement. Interlock can install directly over your existing asphalt roof, saving demolition costs and time. The lightweight design is one reason aluminum has been trusted since 1998, from coastal homes to Antarctica.
Is a metal roof worth the upfront cost compared to asphalt shingles?
Yes, over the roof's full lifecycle. While metal costs more initially, asphalt requires tear-off and replacement every 15–25 years, generating landfill waste each cycle. Interlock's Guardian Warranty is lifetime limited (non-prorated material coverage) for the original owner and one-time transferable for 50 years total—effectively your last roof. With Mississauga's 3,047 annual sunshine hours and freeze-thaw cycling that accelerates asphalt degradation, you'll replace asphalt twice while your metal roof ages. The current promotion offers interest-free payments for 3 months and savings of at least $2,499, lowering the initial barrier further.
Does Interlock metal roofing hold up in hailstorms?
Exceptionally well. Interlock holds the highest hail impact rating available—UL 2218 Class 4—and the warranty covers perforation even from hailstones up to 1.5 inches. In severe weather regions, this rating often qualifies homeowners for insurance premium discounts. Aluminum's natural properties (strength-to-weight ratio, flexibility, and lack of brittleness) contribute to this durability. Combined with Mississauga's exposure to wind gusts of 111 km/h and variable spring storms, Class 4 impact resistance protects your investment against the hail events that would crack or shingle asphalt or shake-style roofs.
Do reflective metal roofs actually reduce cooling costs in Ontario?
Yes. Interlock's energy-efficient colors achieve thermal emissivity of 0.84 and initial solar reflectance up to 0.55, meaning they reflect heat rather than absorb it like asphalt does. In Mississauga's roughly 3,047 sunshine hours per year, this reflectance reduces heat gain during summer months, lowering air conditioning demand. The Cool Roof Rating Council verified these values. While Ontario's mean temperature (9.3°C) is moderate, summer peaks still benefit from reduced thermal load. Metal roofing's energy advantage compounds over decades, offsetting part of the initial material cost through utility savings.
How much maintenance does a metal roof require?
Far less than asphalt, wood shake, or tile. Aluminum doesn't rot, split, curl, or crack—eliminating the patching, sealing, and replacement cycles those materials demand. The Alunar 70% PVDF coating is factory-applied to both sides and warranted 30 years against chalking and fading, so you won't repaint or re-seal. CALGreen verification confirms reduced maintenance requirements. In Mississauga's 100 cm annual snowfall and 750 mm rain, asphalt roofs require frequent inspections and repairs; metal simply sheds water and resists the freeze-thaw stress that degrades other materials. Plan for occasional debris clearing—that's essentially it.
How long does it take to install a metal roof, and can it go over my existing shingles?
Installation typically takes 3–7 days depending on roof size and complexity. Yes, Interlock installs over existing asphalt roofs without tear-off (the aluminum's light weight—as little as 0.41 lb/sq ft—allows this). This saves time, labor costs, and the landfill waste of removing old shingles. Your local installer, Interlock Metal Roofing (Ontario) Ltd., has served the region since 1998 and knows Mississauga's building codes and climate conditions. They'll ensure proper ventilation and drainage given the area's roughly 750 mm annual rainfall, so water management works perfectly with your existing structure.
Will a metal roof help sell my Mississauga home?
Yes. Metal roofing signals quality, durability, and lower maintenance to buyers. The choice of five authentic profiles—Slate, Cedar Shingle, Shake, Mediterranean Tile, and Standing Seam—means you achieve the curb appeal of premium materials without the vulnerability of wood or clay. The Guardian Warranty's one-time transferability (50 years from completion to the next owner) is a tangible selling point—buyers gain decades of protection. In a market where asphalt roofs are routine, a visibly durable, low-maintenance metal roof differentiates your home and justifies a stronger asking price. Interlock's 1998-to-present track record in North America also reassures buyers of proven longevity.
Ready for your last roof in Mississauga?
Talk to your local Interlock® team about a lifetime aluminum roof — Never Re-Roof Again®.