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

Yes—aluminum actually improves with freeze-thaw cycling because its oxide layer self-heals when stressed, unlike asphalt that becomes brittle or wood that splits. Marshall experiences about 87 freeze-thaw days per year, which is exactly the kind of repeated temperature swing that degrades traditional roofing. Interlock's 3105-H24 aluminum alloy and Alunar 70% PVDF coating are engineered to flex and recover without permanent damage. The Guardian warranty covers cracking and splitting for the original owner's lifetime, which reflects how well this material performs in your climate.

Metal roofing sheds snow and ice more effectively than asphalt because its smooth, hard surface prevents the moisture grip that causes dams. You'll receive about 86 cm of snow annually here, and a metal roof's low friction means that weight doesn't accumulate the way it does on traditional shingles. Snow guards can be added if you want to control where snow slides, and the four-way interlocking panels keep wind-driven snow from infiltrating seams. Combined with proper ventilation, this design keeps ice from backing up under your roofline.

Aluminum cannot rust because it contains no iron—what it does develop is a protective aluminum oxide layer that actually seals against moisture. Dane County receives about 788 mm of rain annually, and that constant wet-dry cycling would corrode steel roofing over time, but aluminum grows stronger. The Alunar 70% PVDF fluorocarbon finish is applied to both sides of every panel for extra protection, and even if scratched, the oxide layer self-heals. This is why Interlock has installed roofs in coastal salt-air environments since 1998—aluminum thrives where steel would fail.

No structural reinforcement is needed because Interlock panels are extraordinarily light. The Slate profile installs at about 0.41 lb per square foot, and even the heavier Mediterranean Tile—which replicates the look of concrete or clay tile—comes in at roughly 0.59 lb per square foot, about 96% lighter than the real thing. Most homes can support this weight over existing asphalt without any modification. Your existing roof structure, built to handle traditional shingles, easily accommodates metal panels, making replacement straightforward and cost-effective.

Interlock metal roofing carries a UL 2218 Class 4 impact rating—the highest available—and the warranty even covers perforation from hailstones up to 1.5 inches. That top-tier rating, combined with the non-combustible nature of aluminum and Class A fire classification, often qualifies homeowners for insurance discounts because the roof substantially reduces claims risk. Ask your agent about metal roof discounts before you install; many carriers recognize the durability and claim the savings back quickly. In a state where spring hail is a real possibility, having the strongest impact rating on your side is peace of mind and dollars saved.

Yes. Interlock metal roofing is warranted to resist wind speeds up to 120 mph (193 km/h) when installed to specification, and Marshall's typical wind gusts reach about 95 km/h. The four-way interlocking panels lock together on all sides, so no single panel lifts or separates under pressure—the entire roof becomes one unified surface. This design is why the system holds up in high-wind coastal installations and why it far exceeds the wind loads you'll encounter in Wisconsin. Proper installation to our spec ensures that gusts won't compromise the integrity of your roof.

Significantly less than asphalt, wood, or tile. Metal roofs don't need shingle replacement, wood doesn't split or rot, and there's no granule loss to replace. Twice-yearly gutter cleaning handles debris, and the Alunar 70% PVDF coating is warranted for 30 years against chalking and fading (ASTM D4214 tested), so repainting is never required. Over 788 mm of annual rainfall in Marshall, the roof essentially self-cleans. The Guardian warranty covers rusting, rotting, splitting, cracking, and curling for the original owner's lifetime—the problems that plague traditional roofing and drive maintenance costs don't happen here.

The Guardian warranty is a lifetime limited material warranty for the original owner—non-prorated—covering rusting, rotting, splitting, cracking, curling, and loss of impact resistance. It's also one-time transferable to the next owner for 50 years from completion, which adds serious resale appeal. The non-prorated structure means you're covered fully, not on a declining scale. Since Interlock has manufactured these roofs since 1998 and installed them globally—from coastal homes to an Antarctic research station—real-world data shows these roofs outlast the homes they're on. That lifetime coverage reflects confidence in 25+ years of proven performance.

The math works out over time because asphalt typically lasts 15–20 years and requires full tear-off and landfill disposal, while Interlock is your last roof purchase. With about 86 cm of snow and 88 freeze-thaw days annually, asphalt deteriorates faster in Wisconsin's climate, meaning you'll replace it sooner. Over a 50-year period, you'll install asphalt multiple times versus one metal roof. Factor in the lifetime limited warranty, no maintenance costs, potential insurance discounts, and the avoided landfill cycle, and the per-year cost drops sharply. Many homeowners find the upfront premium recovers itself before year 20.

Aluminum is approximately 95% recyclable and Interlock's roof ends the asphalt tear-off-to-landfill cycle entirely. When your metal roof does eventually reach end-of-life—decades from now—the panels are worth recycling and recovered for new products. Asphalt shingles, by contrast, become landfill waste within 15–20 years and generate pollution during manufacturing and disposal. The lightweight aluminum also means lower transportation energy. energy-efficient colors reflect heat rather than absorbing it, reducing cooling load over Marshall's 3,093 annual sunshine hours. One roof that lasts your lifetime versus multiple asphalt replacements is the most sustainable choice available.

Yes. Marshall averages about 86 cm of snow, 788 mm of rain, roughly 87 freeze–thaw days a year, with peak wind gusts near 95 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.