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

Metal roofs shed snow and ice more effectively than asphalt because the smooth, hard surface and thermal properties prevent ice dams from forming. Union Corners receives about 89 cm of snow yearly with 84 freeze-thaw cycles, which crack and curl asphalt shingles over time; aluminum's oxide layer self-heals and won't split in those temperature swings. Interlock's four-way interlocking panels also accommodate optional snow guards, letting you control discharge safely while the roof itself remains protected.

Asphalt absorbs water, expands when frozen, and cracks or curls when thawed—Union Corners averages 84 freeze-thaw days per year. Aluminum doesn't absorb moisture, so it expands and contracts uniformly without cracking, splitting, or curling. The 3105-H24 / 3003-H24 aluminum alloy meets ASTM B209 and maintains its integrity through thousands of freeze-thaw cycles, which is why Interlock roofs installed since 1998 still perform in climates far more extreme than Dane County.

Aluminum cannot rust because it contains no iron—the two metals that oxidize are steel and iron. Interlock uses roofing-grade 3105-H24 and 3003-H24 aluminum alloy, which forms a self-healing oxide layer that protects the metal underneath, even when scratched. The Alunar 70% PVDF fluorocarbon coating is applied to both sides and warranted 30 years against chalking and fading (ASTM D4214/D2244), providing a second barrier against Wisconsin's 781 mm annual rainfall and winter salt spray.

Union Corners experiences typical gusts around 104 km/h, well within the warranty limit. Interlock's four-way interlocking aluminum panels are warranted to resist wind speeds up to 120 mph (193 km/h) when installed to specification, which exceeds the highest gusts recorded in the region. The interlocking design locks each panel to its neighbors, distributing wind load evenly across the roof rather than relying on fasteners alone, which is why the system performs from coastal salt-air homes to Antarctic research stations.

Yes—aluminum is extraordinarily light. The Mediterranean Tile profile installs at just 0.59 lb/sq ft, making it about 96% lighter than concrete or clay tile, so no structural reinforcement is needed. Interlock installs over most existing roofs, including asphalt, wood, and even slate, without adding measurable load. This is critical in Wisconsin's freeze-thaw environment: a lighter roof means less stress on aging framing during expansion and contraction, and the ICC-ES evaluation report ESR-1790 confirms the system's compliance with IBC/IRC code for residential installation.

Interlock meets UL 2218 Class 4 impact rating, the highest available, and the warranty even covers perforation from hailstones up to 1.5 inches. Many insurers recognize Class 4 impact resistance and offer premium discounts because the roof is less likely to require claims. Contact your agent with the UL 2218 Class 4 designation and the ICC-ES ESR-1790 evaluation report; together they document the roof's durability and may qualify you for a reduction on your homeowner's policy.

Interlock offers a lifetime limited, non-prorated material warranty for the original owner—no depreciation, no exclusions for normal wear. The Guardian Warranty covers rusting, rotting, splitting, cracking, curling, and loss of impact resistance; it's one-time transferable, extending 50 years from completion for the next owner. Unlike asphalt, which needs replacement every 15–20 years, or wood shake, which splits and rots, aluminum's non-corrosive nature and self-healing oxide layer mean you're installing your last roof, and the next homeowner will still be protected 50 years out.

Metal roofs cost more upfront but eliminate the tear-off-to-landfill cycle every 15–20 years. Over a 50-year ownership span, an asphalt roof needs 2–3 replacements (material + labor + disposal), while Interlock's lifetime limited warranty and non-prorated coverage mean no replacement and minimal maintenance. In Wisconsin's 84 annual freeze-thaw days and 781 mm rain, asphalt degrades faster; aluminum doesn't absorb water or split in cold. The one-time cost—and transferable 50-year extended warranty—makes it the last roof you buy.

No—aluminum requires far less. Asphalt needs inspection after storms and eventual replacement; wood shake splits, rots, and requires regular treatment in Wisconsin's humid climate and 89 cm annual snowfall. Aluminum won't rot, split, or curl, and the ICC-ES ESR-1790 evaluation confirms the system is CALGreen-verified for reduced maintenance. The Alunar 70% PVDF coating (30-year warranty) resists UV and weathering, so routine maintenance is limited to debris removal and occasional gutter cleaning—the same as any roof—with no special treatments or repairs expected.

Yes. Aluminum is approximately 95% recyclable and ends the asphalt tear-off cycle that fills landfills every 15–20 years. Union Corners receives 781 mm of annual rainfall; asphalt shingles shed microplastics and oil compounds into stormwater runoff during that time, while aluminum is chemically inert. The 3105-H24 / 3003-H24 alloy never breaks down into microparticles, and when a metal roof finally reaches end-of-life (well beyond 50 years), the entire panel is recycled as aluminum—the same material Interlock has manufactured in Delta, BC since 1998 for coastal homes, inland regions, and Antarctic research stations.

Yes. Union Corners averages about 89 cm of snow, 781 mm of rain, roughly 84 freeze–thaw days a year, with peak wind gusts near 104 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.