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

Yes — aluminum's oxide layer actually strengthens under freeze-thaw stress rather than cracking like asphalt or wood. Vermont, Wisconsin sees about 85 freeze-thaw days per year, and the 3105-H24 aluminum alloy used in Interlock panels is engineered to flex without fatigue damage. Unlike slate or cedar shake, which split when water enters microfractures and freezes, aluminum has no pores where water can lodge. Over 120 cm of annual snow with repeated melting, your roof remains intact — that's why Interlock panels have been installed at Antarctic research stations where thermal cycling is extreme.

The smooth, non-porous surface of Interlock panels sheds snow and ice far more effectively than asphalt shingles, which create friction and trap melt-water that refreezes at the eave. Your region receives about 120 cm of snow annually over roughly 3,093 sunshine hours, so the reflective aluminum surface — with solar reflectance up to 0.55 in lighter colors — actually accelerates daytime melt even in winter, reducing ice dam formation. Optional metal snow guards can be added if you want to retain snow for insulation value. The four-way interlocking panels lock together so tightly that wind-driven snow cannot penetrate the seams.

The four-way interlocking aluminum panels are warranted to resist wind speeds up to 120 mph, which far exceeds the typical gusts of about 93 km/h (58 mph) recorded in Dane County. Each panel locks to its neighbors on all four sides — top, bottom, and both sides — creating a unified system that doesn't rely on fasteners alone to hold it down. The UL 2218 Class 4 impact rating (the highest available) is partly a result of this interlocking strength. During spring and autumn storm seasons, your roof won't lift, flutter, or allow wind-driven rain beneath the seams.

Aluminum cannot rust because it contains no iron, and it forms a self-healing oxide layer that regenerates whenever the surface is scratched. Steel roofing rusts; copper oxidizes (turning green); but 3105-H24 aluminum alloy stays stable indefinitely. In salt-air environments like coastal British Columbia — where Interlock has been installed since 1998 — the material outlasts steel by decades. Even though Vermont, Wisconsin isn't coastal, the winter road salt that splashes onto your home creates a similarly corrosive environment. The Alunar 70% PVDF fluorocarbon coating on both sides of each panel adds a 30-year fade and chalk warranty (ASTM D4214/D2244 measured), so your roof resists not just corrosion but also UV damage through about 85 freeze-thaw cycles each year.

No structural reinforcement is needed. Interlock's Mediterranean Tile profile, for example, weighs only about 0.59 lb/sq ft — roughly 96% lighter than concrete or clay tile — and the Cedar Shingle is just 0.41 lb/sq ft. Most existing roofs can support the retrofit without any framing upgrades. Compare that to traditional slate or tile: your home was never engineered for their weight. Interlock panels can be installed directly over most existing asphalt, allowing you to skip the costly tear-off and disposal. The light weight also means faster installation and lower labor costs, which is why many homeowners see Interlock as the last roof they'll ever buy rather than repeating the asphalt replacement cycle every 15–20 years.

The Guardian Warranty is a lifetime limited, non-prorated material warranty for you as the original owner — covering rusting, rotting, splitting, cracking, curling, and loss of impact resistance. That means there's no dollar deductible and no gradual reduction in coverage year to year. The warranty transfers once to the next owner for 50 years from completion, adding measurable value to your home's marketability. Combined with the 30-year Alunar coating warranty and the UL 2218 Class 4 impact rating that stays constant throughout the roof's life, you're protected through the 85 freeze-thaw cycles and roughly 780 mm of annual rain your region experiences — for decades.

Interlock aluminum panels are non-combustible and achieve Class A fire classification when installed to specification (ICC-ES ESR-1790, reissued 2025). Unlike asphalt shingles, which are petroleum-based and flammable, aluminum has no fuel value — it simply won't catch fire. If your home is in a wildfire-prone zone or near wooded areas around Dane County, this matters: your roof becomes a natural firebreak that protects the house from ember intrusion. The CALGreen-verified design also means reduced maintenance requirements, so you won't accumulate leaf litter or debris that could feed a fire.

energy-efficient colors have thermal emissivity of 0.84 and solar reflectance up to 0.55 (in lighter finishes like Aged Copper Penny), meaning they reflect the heat that dark asphalt absorbs. In a region averaging 3,093 sunshine hours per year, that reflection compounds over time. Cool Roof Rating Council-rated Interlock panels can lower roof surface temperature by 20–30°F on sunny days compared to traditional shingles. Even though Vermont, Wisconsin winters are long and you may value solar gain, the reflective finish still reduces peak summer cooling demand. The light weight also means no added structural load if you later install solar panels — another energy-efficiency upgrade.

Installation typically completes in one to three days depending on roof size and complexity, with no extended downtime or interior disruption. Most existing asphalt roofs can remain in place — Interlock panels install directly over them, eliminating the cost and landfill impact of tear-off. Your installer, Interlock Metal Roofing, has served the region since 2001 and understands local code compliance (ESR-1790) and the installation techniques that ensure the 120 mph wind warranty and proper shedding of your region's 120 cm annual snowfall. Crews work safely even during the spring and autumn storm seasons typical to Dane County, and the roof is watertight and functional as soon as installation ends.

Interlock aluminum is approximately 95% recyclable at end of life, ending the asphalt tear-off-to-landfill cycle that repeats every 15–20 years. Asphalt shingles are petroleum products mixed with granules and adhesives — they're largely non-recyclable and accumulate in landfills. Over 50 years, a homeowner might replace asphalt three times; Interlock goes in once. The aluminum used in Interlock panels is already recycled content in many cases and enters a true circular economy when your roof eventually outlives your home. Manufactured since 1998 in Delta, BC, the panels reflect heat (reducing cooling energy) and generate zero waste during installation — the panels interlock tightly with no trim waste or complicated cuts required.

Yes. Vermont averages about 84 cm of snow, 780 mm of rain, roughly 85 freeze–thaw days a year, with peak wind gusts near 93 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.