Metal Roofing in Randall, Wisconsin — Lifetime Interlock® Aluminum Shingles Installed Locally

Interlock's four-way interlocking aluminum panels shed snow effectively while the metal itself expands and contracts smoothly through Randall's roughly 80 freeze-thaw cycles per year without cracking or splitting. The panels are warranted to resist wind gusts up to 120 mph, so heavy snow loading combined with the typical 99 km/h gusts won't compromise the seal. Unlike asphalt shingles that become brittle in repeated freeze-thaw cycles, aluminum's native oxide layer self-heals when scratched by ice or debris, maintaining its integrity through your winters.

Aluminum cannot rust because it contains no iron—rusting requires iron oxidation. Instead, aluminum instantly forms a self-healing oxide layer when exposed to air that protects the underlying metal. In Randall's ~835 mm annual rainfall, this is critical: that oxide layer seals itself even when scratched, so moisture never triggers the corrosion cycle that attacks steel. Interlock uses roofing-grade 3105-H24 aluminum with a Alunar 70% PVDF fluorocarbon finish applied to both sides, warranted 30 years against chalking and fading, adding an extra corrosion barrier for Wisconsin's wet climate.

Yes—aluminum thrives in freeze-thaw because it expands and contracts uniformly without cracking, splitting, or curling like asphalt or wood. Randall experiences roughly 80 freeze-thaw cycles annually, and asphalt shingles degrade rapidly under this stress; Interlock's aluminum panels flex with temperature swings without loss of structural integrity. The material also sheds water efficiently so meltwater doesn't pool and refreeze in cracks. That's why Interlock has been installed in climates from coastal salt air to Antarctic research stations—freeze-thaw cycling is what metal roofing was designed for.

Interlock's four-way interlocking aluminum panels are warranted to resist wind speeds up to 120 mph (193 km/h), well above Randall's typical gusts of 99 km/h. The four-way interlocking design—unique to Interlock—distributes lateral forces across the entire roof plane rather than relying on fasteners alone, so each panel supports its neighbors. This system was validated under ICC-ES evaluation ESR-1790 (the current 2025 reissue) for IBC/IRC compliance, meaning it meets modern building code wind standards. Even during spring and fall storms, the engineering holds.

Interlock achieves UL 2218 Class 4 impact rating—the highest available—meaning the panels withstand hailstones up to 1.5 inches without perforation. The warranty explicitly covers hail damage, and the combination of aluminum's inherent hardness with the Alunar fluorocarbon finish creates a surface that resists denting better than asphalt or wood. Many insurance companies offer discounts for Class 4-rated roofs. While Randall's ~3,094 annual sunshine hours suggest hail is not the dominant seasonal risk, the Class 4 rating provides security during spring storm season without adding weight or cost.

No structural reinforcement is needed. Interlock's Mediterranean Tile profile, for example, installs at roughly 0.59 lb/sq ft—about 96% lighter than concrete or clay tile—so it can be installed directly over most existing roof structures and even over old asphalt shingles. Shake runs ~0.58 lb/sq ft and the Shingle profile ~0.41 lb/sq ft. This light weight means no costly framing upgrades, no added strain on your foundation, and easier installation. Traditional tile demands structural reinforcement because of its mass; aluminum's strength-to-weight ratio eliminates that expense while delivering the same visual profile your home deserves.

Interlock requires far less maintenance than asphalt, wood, or tile. No replacement of damaged shingles, no wood rot inspections, no tile cracking repairs. Twice-yearly gutter cleaning is standard for any roof in a climate that receives ~835 mm of annual rain. The Alunar fluorocarbon finish, rated 30 years against chalking and fading per ASTM D4214/D2244, resists dirt and algae buildup better than asphalt. You'll never pressure-wash or re-coat it. Interlock is CALGreen-verified for reduced maintenance, which translates directly to lower ownership costs and more time enjoying your home rather than maintaining it.

Yes—when you compare total cost of ownership, not just installation price. Asphalt roofs last 15–20 years in Wisconsin's harsh climate; Interlock comes with a lifetime limited, non-prorated material warranty for the original owner and a transferable 50-year term for the next owner. You'll tear off and landfill asphalt two to three times in the lifespan of one aluminum roof. Eliminating multiple replacement cycles, plus avoiding the repair costs of weathering, splits, and curling that plague asphalt in Randall's ~80 annual freeze-thaw days, means metal becomes the last roof you buy. The Guardian Warranty covers rusting, rotting, splitting, cracking, and curling—the exact failures that drain asphalt owners' budgets.

Substantially. Interlock's aluminum is approximately 95% recyclable at end of life, so it cycles back into the economy rather than to landfills. Asphalt shingles, by contrast, are difficult to recycle and generate millions of tons of landfill waste annually. Randall's rainfall of ~835 mm per year accelerates asphalt degradation, meaning you'll tear off and dispose of your shingles every 15–20 years. One aluminum roof ends that cycle for decades. energy-efficient Interlock colors reflect solar heat rather than absorbing it (aged copper achieves 0.55 initial solar reflectance), reducing cooling load. Over the roof's lifetime, you'll cut landfill contribution, extend replacement intervals, and lower energy use—three major environmental wins.

Yes. Interlock Metal Roofing has served this region since 2001 and understands Wisconsin's freeze-thaw, snow, and wind conditions intimately. Local installation means faster scheduling, easier site visits during the estimate and warranty process, and support from installers familiar with Kenosha County building codes and weather challenges. Interlock has been manufactured in Delta, BC since 1998 and installed across extreme environments—from coastal salt-air homes to Antarctic research stations—so your local installer brings both deep product knowledge and proven field experience to your project. That combination of local access and proven track record protects your investment.

Yes. Randall averages about 82 cm of snow, 835 mm of rain, roughly 80 freeze–thaw days a year, with peak wind gusts near 99 km/h. Interlock® aluminum roofing is wind-rated to 193+ km/h (120 mph), UL 2218 Class 4 impact-rated and Class A fire-rated, and its four-way interlocking panels shed snow and resist ice dams and freeze–thaw cracking — all backed by a lifetime limited, transferable warranty.