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

Yes—aluminum's smooth, hard surface sheds snow and ice far more effectively than asphalt. Westown receives about 88 cm of snow annually across roughly 79 freeze-thaw cycles, which is where asphalt fails: it becomes brittle and fractures during repeated thawing. Interlock's four-way interlocking panels (ESR-1790 code-compliant) lock together so water cannot migrate laterally under freeze-thaw stress. The aluminum substrate itself cannot rot or absorb moisture, eliminating the ice-dam rot that compromises asphalt within 10–15 years in this climate.

Aluminum thrives in freeze-thaw cycles because it expands and contracts uniformly without cracking or losing integrity. With 79 annual freeze-thaw days in Westown and 822 mm of rain, traditional materials like asphalt and wood become brittle and fail. Aluminum's 3105-H24 / 3003-H24 alloy (ASTM B209) is engineered for thermal cycling; its oxide layer self-heals when stressed or scratched. The Alunar 70% PVDF coating (30-year fade warranty) remains flexible across temperature swings, maintaining the seal that keeps water out season after season.

Aluminum cannot rust because it contains no iron—the element that oxidizes in moisture. Westown's 822 mm annual rainfall and frequent thaw cycles trigger rust on steel roofs within years, but aluminum's oxide layer is self-healing: when scratched or exposed, it reforms automatically. The Alunar fluorocarbon finish (both sides, 30-year warranty) adds a second barrier. This two-layer defense is why Interlock panels have been reliably installed from coastal salt-air homes to an Antarctic research station since 1998—corrosion simply cannot initiate on roofing-grade aluminum.

Westown's typical wind gusts reach 96 km/h, and Interlock Metal Roofing is warranted to resist 120 mph (193 km/h) sustained winds when installed to spec. The four-way interlocking panels lock together so no edge lifts or separates during gusts; each panel reinforces its neighbors. The system resists the shear and uplift forces that peel asphalt shingles away. With 79 freeze-thaw days annually, repeated thermal cycling also weakens asphalt fasteners—but aluminum's dimensional stability means fasteners stay tight year after year.

No structural reinforcement is required. Interlock's aluminum panels weigh remarkably little: the Slate profile installs at 0.41 lb/sq ft and the Mediterranean Tile (despite its authentic appearance) at only 0.59 lb/sq ft—roughly 96% lighter than concrete or clay tile. Most existing roof frames can support them without modification. This matters in Wisconsin's climate: you can often install Interlock over your existing asphalt roof, avoiding a costly tear-off and landfill disposal. The lightweight design also means no added stress during those 79 annual freeze-thaw cycles, so no accelerated structural fatigue.

Over the roof's lifetime, metal roofing costs less. Asphalt fails in 12–18 years in Westown's freeze-thaw climate (79 cycles annually); you replace it 3–4 times in 50 years. Interlock carries the Guardian Warranty—a lifetime limited, non-prorated material warranty for the original owner, with one-time transfer giving the next owner 50 years from completion. No maintenance, no tear-offs, no landfill fees. The upfront premium vanishes when you calculate total cost per year across decades, especially when you account for labor and disposal costs of multiple asphalt replacements.

Interlock achieves UL 2218 Class 4 impact rating—the highest available—and the warranty covers perforation from hailstones up to 1.5 inches. The aluminum's hardness and the interlocking design distribute impact energy across panels so stress concentrates nowhere. Many insurers offer discounts for Class 4 roofing because claims are rare. In Wisconsin's climate with frequent severe weather risk, this durability translates to lower premiums. Unlike asphalt, which bruises and degrades under hail, or wood shake, which splits, aluminum actually becomes more resilient over time.

Virtually none. Aluminum cannot rot, split, curl, or crack, and the Alunar 70% PVDF finish is CALGreen-verified for reduced maintenance. With 822 mm annual rain and 88 cm snow, asphalt and wood require regular clearing, patching, and sealing; Interlock does not. The smooth surface sheds debris naturally. The four-way interlocking panel design means no fasteners work loose during Westown's 79 freeze-thaw cycles each year. You do not seal, prime, or paint—just inspect gutters. For 50 years, the Guardian Warranty covers cracking, curling, loss of impact resistance, and material defects at no cost to you.

Yes—aluminum is roughly 95% recyclable, and Interlock breaks the asphalt tear-off-to-landfill cycle. Every 15 years, Westown homeowners tear off asphalt roofs and send tons of waste to landfills; the Guardian Warranty's 50-year transfer term means one Interlock roof serves two families across five decades. The aluminum itself is infinitely recyclable without degradation. Even installation is cleaner: lightweight panels often install over existing roofs, eliminating demolition waste and labor. When Interlock eventually reaches end-of-life, every scrap returns to the aluminum supply chain, not a landfill.

Interlock Metal Roofing has served the Milwaukee County region since 2001, bringing over two decades of experience with freeze-thaw cycles, snow loads, and wind gusts specific to Westown. The company manufactures Interlock panels in Delta, BC and ensures every installation meets ICC-ES ESR-1790 code (reissued 2025) and the Guardian Warranty terms. Local installers understand regional weather patterns—those 79 freeze-thaw days, 96 km/h gusts, and 88 cm snowfall—and know exactly how to flash, seal, and finish your roof for lasting performance in Wisconsin's climate.

Yes. Westown averages about 88 cm of snow, 822 mm of rain, roughly 79 freeze–thaw days a year, with peak wind gusts near 96 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.