Winterlock — Cold Weather Roofing by Interlock®
Antarctic Tested. Engineered for the Extreme Cold.
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Built for Winter. Designed for Every Season.
When winter storms hit hard, Winterlock Roofing Systems stand stronger.
Engineered by Interlock®, a North American leader in metal roofing innovation, Winterlock is 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 Winterlock 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.
Winterlock’s all-metal, interlocking panels eliminate these problems with:
- Snow-Shedding Design: Smooth, angled surfaces allow snow to 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: Reflective coatings help stabilize indoor temperatures in every season.
Engineered for year-round installation, Winterlock 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 Winterlock system is crafted from high-grade aluminum and finished with advanced coatings that stand up to snow, sleet, and hail.
Your roof isn’t just protection — it’s an engineered system designed to last for decades.
Interlock Lifetime Performance
- Backed by Interlock’s Limited Lifetime Warranty
- Installed by factory-trained professionals
- Manufactured with sustainable, recyclable materials
Winterlock isn’t another seasonal product — it’s a true four-season roofing system that performs whether it’s +30°C or −30°C.
Engineered for the Extreme Cold
Antarctic Tested. Engineered for the Extreme Cold.
Winterlock 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.
The result? A cold-climate metal roof proven to perform — not just survive — in the harshest environments.
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, Vermont
What Homeowners Are Saying
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 prevents 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 engineered specifically for cold climates and heavy snowfall. Unlike conventional metal roofs, it features precision-formed interlocking panels that shed snow naturally and help prevent ice dams from forming. Built from high-grade aluminum and finished with protective coatings, Winterlock resists corrosion, expansion, and cracking — even during severe freeze-thaw cycles.
Can Winterlock roofs be installed in winter?
Yes. Winterlock’s year-round installation capability is one of its defining advantages. Interlock’s trained installers utilize specialized fastening and underlayment systems specifically designed for cold-weather conditions, allowing you to replace your roof even when temperatures drop below freezing.
How does Winterlock handle snow and ice buildup?
The smooth, interlocking design allows snow to slide off easily, preventing dangerous buildup. Its non-porous aluminum surface doesn’t absorb moisture, which helps minimize ice formation and protects your roof from structural stress.
Is Winterlock tested for extreme cold weather performance?
Absolutely. Winterlock is Antarctic Tested — engineered and stress-tested to withstand extreme cold, high winds, and rapid temperature changes. It’s the same level of testing used for polar-grade building materials, ensuring year-round reliability from blizzards to spring thaws.
How long does a Winterlock roof last?
Every Winterlock system comes with Interlock’s Limited Lifetime Warranty, guaranteeing decades of protection. Because aluminum doesn’t rust or corrode, a properly installed Winterlock roof can last 50 years or more with minimal maintenance.
What maintenance does a Winterlock roof require?
Very little. Seasonal inspections and occasional rinsing are usually all that’s needed. Winterlock panels resist debris, algae, and mold buildup — no more costly roof repairs or re-shingling after harsh winters.
Is Winterlock environmentally friendly?
Yes. Winterlock roofs are made from sustainable, recyclable aluminum. Their long lifespan reduces landfill waste, and their reflective coatings can help lower energy bills by keeping homes cooler in summer and insulated in winter.
How does Winterlock perform compared to asphalt shingles in cold regions?
Unlike asphalt shingles that can crack, warp, or lose granules in cold weather, Winterlock’s aluminum interlock design maintains integrity and appearance. It’s lighter, more durable, and designed to shed snow rather than hold it — preventing leaks and structural damage.
Is Winterlock suitable for all roof types?
Yes. Winterlock can be installed on most roof styles — gable, hip, and even complex architectural roofs. Its modular panel system adapts to residential, commercial, and institutional buildings, ensuring consistent weatherproofing.
How can I get a Winterlock roof installed?
Winterlock Cold Weather Roofing is available exclusively through authorized Interlock installers across North America. Visit InterlockRoofing.com to find a certified local installer and request a free year-round installation estimate.
Will Winterlock help prevent ice dams and leaks?
Yes. The system’s snow-shedding panels and tightly sealed interlocks stop meltwater from refreezing at the eaves — a leading cause of ice dams. By maintaining consistent surface temperature, Winterlock helps keep your roof and gutters clear all winter long.
Does Winterlock add value to my home?
Definitely. Homeowners gain lasting protection, energy efficiency, and modern curb appeal — all of which enhance their property's resale value. Buyers recognize the long-term savings of a lifetime roof that never needs replacement.