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

Yes—aluminum actually improves with freeze-thaw exposure. Stewart experiences about 81 freeze-thaw days per year, a condition that cracks asphalt, splits wood shakes, and spalls concrete or clay tile. Aluminum's oxide layer self-heals when scratched, and the 3105-H24 alloy (ASTM B209) resists the micro-fracturing that destroys brittle materials. Four-way interlocking panels accommodate thermal expansion without joint failure, and the Alunar 70% PVDF fluorocarbon coating (warranted 30 years) prevents coating breakdown—the real culprit in cold climates. You're investing in a roof that strengthens under the exact conditions that age out asphalt.

Metal roofing sheds snow and ice far more effectively than asphalt because aluminum conducts and radiates heat uniformly across the panel surface, reducing the insulation-melt-refreeze cycle that creates ice dams. With about 98 cm of snow annually in Stewart, the light weight of Interlock panels—the Slate profile at 0.41 lb/sq ft—means your home's structure bears no additional load even after heavy accumulation. The four-way interlocking design keeps panels locked during thermal cycling, and snow guards can be added if you prefer controlled shed rather than full release. Unlike slate or tile, which are heavy and trap ice, aluminum's thermal conductivity and negligible weight make it the practical choice for Wisconsin winter conditions.

Absolutely. Stewart experiences typical daily-max winds around 22 km/h with gusts up to 97 km/h—well within Interlock's 120 mph (193 km/h) wind-resistance warranty when installed to specification. The four-way interlocking aluminum panels lock together on all sides, creating a unified diaphragm that distributes wind load across the entire roof plane rather than failing at fastener points like shingles do. This redundant interlocking system has proven itself in coastal salt-air installations since 1998 and at an Antarctic research station—environments far harsher than Dane County wind. Your roof won't lift, flutter, or separate during Wisconsin's peak gusts.

Metal roofing is the last roof you buy; asphalt is not. Asphalt shingles typically last 15–20 years in Wisconsin's ~81 freeze-thaw cycles per year—meaning you'll replace it 2–3 times in a 60-year lifespan. Each tear-off adds labor, landfill fees, and disposal costs. Interlock's lifetime limited warranty for the original owner covers rusting, rotting, splitting, cracking, curling, and impact loss; the one-time transferable benefit extends 50 years from completion to the next owner. Over 60 years, you avoid 2–3 asphalt replacement cycles, their associated labor, the environmental cost of repeated landfill disposal, and repeated disruption to your home. The initial premium shrinks dramatically when spread across decades of zero-replacement ownership.

Interlock achieves UL 2218 Class 4 impact rating—the highest available—and the warranty specifically covers perforation from hailstones up to 1.5 inches. Class 4 rating qualifies for insurance discounts in many Wisconsin carriers because it demonstrates impact durability far beyond asphalt or wood shake (both Class 1 or unrated). The rigid 3105-H24 aluminum alloy (ASTM B209) dissipates impact energy across the interlocking panel system rather than fracturing or denting like brittle tile. Stewart's hail exposure is typical for the region, but when a storm hits, your roof won't crater, separate, or require claims documentation. Contact your insurer about specific discount amounts—they vary—but the UL 2218 Class 4 rating gives you a concrete negotiating point.

Almost none. Asphalt shingles require inspection and seal-coating every few years; wood shakes need retreating to prevent rot and splitting; slate and tile require repointing and individual piece replacement. Interlock aluminum requires only twice-yearly gutter cleaning and removal of roof debris—the same maintenance you'd do anyway. The Alunar 70% PVDF fluorocarbon coating (both sides, warranted 30 years) resists the chalking and fading that forces asphalt repainting. In Stewart's ~3073 annual sunshine hours and 760 mm of rain, the self-healing oxide layer and fluorocarbon finish prevent the UV breakdown and moisture penetration that age other materials. Your roof simply weathers—no special treatments, no sealants to renew, no seasonal inspections for cracks or curling.

Metal roofing reduces cooling load by reflecting rather than absorbing solar heat. Interlock's energy-efficient colors achieve thermal emissivity of 0.84 and initial solar reflectance up to 0.55 (Aged Copper Penny profile)—meaning they bounce heat away rather than converting it to warmth inside your attic. In Stewart's ~3073 annual sunshine hours, this reflectance advantage compounds across spring, summer, and early autumn, lowering air-conditioning runtime and cost. Cool Roof Rating Council rating confirms measurable performance. Asphalt shingles, by contrast, absorb heat and radiate it into your home. While Wisconsin winters are cold (mean 8.5°C), the energy benefit extends through shoulder seasons when cooling is welcome, and the reflectance doesn't penalize winter heating—aluminum's thermal properties work year-round to even out demand.

Yes, because it breaks the asphalt tear-off-to-landfill cycle. Asphalt shingles are single-use: after 15–20 years in Wisconsin's ~81 freeze-thaw cycles, you remove them and send them to landfill, then manufacture and transport new shingles. Interlock aluminum is approximately 95% recyclable at end of life—far beyond its 60+ year lifespan. The roofing-grade 3105-H24 / 3003-H24 alloy (ASTM B209) carries no manufacturing debt because aluminum's oxide layer is permanent and requires no replacement. You install once, then recycle aluminum into new products, avoiding the embodied carbon of repeated manufacturing and the pollution of landfill decomposition. The Guardian Warranty ensures your roof outlasts multiple asphalt cycles, dramatically reducing the environmental impact per year of protection.

Yes. Interlock Metal Roofing has been serving the Stewart region since 2001, giving local customers 20+ years of installation expertise and warranty support. The company manufactures panels in Delta, BC, ensuring consistent quality and fast supply without lengthy lead times. Local installation means your roof project stays under the supervision of installers who know Dane County's climate extremes—the 760 mm annual rainfall, ~98 cm snow, 97 km/h gusts, and 81 freeze-thaw days per year—and can specify snow guards, flashings, and underlayment appropriate to those conditions. The Guardian Warranty is honored locally, so claims, inspections, and any service requests are handled by the team that installed your roof.

Yes. The extraordinary light weight of Interlock panels—as little as 0.41 lb/sq ft for the Slate profile, roughly 96% lighter than concrete or clay tile—means installation over most existing roofs requires no structural reinforcement. Your installer removes only the topmost asphalt layer, preserving the deck and underlayment, which reduces labor cost and debris disposal. The ICC-ES evaluation report ESR-1790 (reissued 2025 for IBC/IRC compliance) explicitly permits this retrofit approach. New underlayment can be added if needed, and the four-way interlocking panels secure to your existing roof deck with corrosion-resistant fasteners. The installation timeline is typically shorter than traditional tear-off-and-replace, minimizing disruption and the cost of dumping old shingles from your Stewart home.

Yes. Stewart averages about 98 cm of snow, 760 mm of rain, roughly 81 freeze–thaw days a year, with peak wind gusts near 97 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.