Cold Weather Roofing by Interlock®
Antarctic tested. Engineered for the extreme cold.
Built for Winter. Designed for Every Season.
When winter storms hit hard, Interlock Roofing Systems stand stronger. Engineered by Interlock® Roofing Ltd., a North American leader in metal roofing innovation, Interlock Lifetime Roofing Systems are purpose-built for extreme cold climates — shedding snow, resisting ice buildup, and performing flawlessly through freeze–thaw cycles year after year.
From blizzards in Alberta to nor'easters in New England, homeowners trust Interlock to protect what matters most — their home and family.
Why Cold-Weather Roofing Matters
Traditional asphalt shingles can crack, curl, or fail under the stress of repeated freezing and thawing. Heavy snow adds weight, and ice dams form along unprotected eaves, leading to leaks and costly repairs. Interlock's all-metal, interlocking panels eliminate these problems:
Snow-Shedding Design
Smooth, angled surfaces let snow slide off naturally, reducing ice-dam formation.
High Wind Resistance
Secure interlock seams hold tight through high-velocity winter gusts.
Freeze-Thaw Durability
Aluminum construction will never rust, crack, or delaminate.
Energy Efficiency
The reflective Alunar® Coating System helps stabilize indoor temperatures in every season.
Engineered for year-round installation — Interlock can be installed even in cold weather, extending your roofing season when competitors have to wait for spring.
A Roof That Works as Hard as You Do
Every Interlock system is crafted from high-grade aluminum and finished with advanced coatings that withstand snow, sleet, and hail. Your roof isn't just protection — it's an engineered system designed to last for decades.
- Backed by Interlock's Lifetime Limited Warranty
- Installed by trained professionals
- Manufactured with sustainable, recyclable materials
Interlock isn't a seasonal product — it's a true four-season roofing system that performs in temperatures from +30°C to −30°C and beyond.
Antarctic Tested. Engineered for the Extreme Cold.
Interlock draws on the same engineering standards used for polar research housing and northern infrastructure. Our design team tested materials under sub-zero load conditions to simulate real-world snow load, thermal stress, and expansion cycles — and Interlock roofing and siding clad the U.S. National Science Foundation's SPOT modules in Antarctica. The result? A cold-climate metal roof proven to perform — not just survive — in the harshest environments on Earth.
Available Across North America
Winterlock by Interlock® is available through authorized installers across Canada and the United States, including Alberta, British Columbia, Ontario, Atlantic Canada, Washington, Oregon, Illinois, Minnesota, Wisconsin, Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont.
Why Choose Winterlock
| Feature | Benefit |
|---|---|
| All-Metal Interlocking Panels | Strength, stability, and lifetime performance |
| Cold-Weather Installation | No seasonal downtime — install anytime |
| Snow-Shedding Design | Helps prevent ice dams and heavy buildup |
| Lifetime Warranty | Long-term peace of mind |
| Sustainable Materials | Eco-friendly and fully recyclable |
FAQs About Cold Weather Roofing
What makes Winterlock different from standard metal roofing?
Winterlock is the Interlock® system engineered and proven for extreme cold: a snow-shedding interlocking design, freeze-thaw-proof aluminum, and the reflective Alunar® coating — drawing on the same engineering standards used for polar research housing.
Can Winterlock roofs be installed in winter?
Yes. Interlock systems are engineered for year-round installation — extending your roofing season when competitors have to wait for spring.
How does Winterlock handle snow and ice buildup?
Smooth, angled aluminum surfaces let snow slide off naturally, reducing ice-dam formation, while the interlocking design blocks water intrusion during melt-refreeze cycles.
Is Winterlock tested for extreme cold weather performance?
Yes — materials are tested under sub-zero load conditions simulating real-world snow load, thermal stress and expansion cycles, and Interlock materials clad the NSF’s SPOT modules operating in Antarctica.
How long does a Winterlock roof last?
It’s a lifetime system: 50+ year performance expectancy, backed by Interlock’s Lifetime Limited, transferable warranty.
What maintenance does a Winterlock roof require?
Very little — keep gutters clear and remove debris promptly. Aluminum never rusts, cracks, or delaminates, so there’s no recurring repair cycle.
Is Winterlock environmentally friendly?
Yes. Panels are manufactured with recycled aluminum and are fully recyclable at end of life — ending the landfill cycle of torn-off asphalt shingles.
How does Winterlock perform compared to asphalt shingles in cold regions?
Asphalt cracks and curls under freeze-thaw stress and suffers ice damming at the eaves. Winterlock’s aluminum panels are unaffected by freeze-thaw, shed snow, and hold tight in high winter winds.
Is Winterlock suitable for all roof types?
Interlock profiles (Slate, Cedar Shingle, Shake, Tile, Standing Seam) fit most residential roof shapes and pitches. A certified installer will confirm the right system for your roof.
How can I get a Winterlock roof installed?
Winterlock is available through authorized Interlock installers across Canada and the northern United States. Request a free quote and we’ll connect you with your local certified installer.
Will Winterlock help prevent ice dams and leaks?
Yes — the snow-shedding surface reduces the buildup that causes ice dams, and the 4-way interlocked panels resist water intrusion when melt-refreeze cycles occur.
Does Winterlock add value to my home?
A lifetime, transferable-warranty roof is a genuine selling feature: lower energy bills, no looming re-roof cost, and curb appeal that lasts decades.
Winter is coming — every year. Get the roof that's ready for all of them.
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