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

Yes—aluminum thrives in freeze-thaw conditions because it expands and contracts uniformly without degrading. Slabtown gets about 81 freeze-thaw days per year, plus roughly 88 cm of snow, which creates the exact scenario where asphalt shingles crack and curl. Aluminum oxide forms a self-healing protective layer that strengthens with temperature swings rather than breaking down. The four-way interlocking system (ESR-1790 rated) allows micro-movement without panel separation, and the Alunar 70% PVDF coating stays flexible across the full temperature range your region experiences.

Metal roofs shed snow and ice far more effectively than asphalt because the smooth surface and tight panel seams prevent water from pooling behind ice dams. Your area averages 88 cm of snow annually with about 3074 sunshine hours per year—that combination means snow melts and slides off predictably rather than sitting and damming. The four-way interlocking panels eliminate the gaps where water creeps underneath. Optional snow guards can be added if you want to control roof slides onto walkways; most homeowners in heavy-snow zones find the self-shedding action a major advantage over the buildup problem that leads to interior leaks.

Aluminum cannot rust because it contains no iron—the element that oxidizes. Steel roofing requires expensive protective coatings that degrade over time; aluminum's oxide layer seals itself when scratched and actually strengthens with exposure. Slabtown receives about 775 mm of rain yearly plus snowmelt, creating a humid environment where steel coatings fail within 15–20 years. Interlock uses roofing-grade 3105-H24 and 3003-H24 aluminum alloy (ASTM B209) with a Alunar 70% PVDF finish applied to both panel sides for extra durability. Steel simply cannot match that corrosion resistance, especially where temperature swings—your region sees roughly 81 freeze-thaw cycles annually—accelerate coating breakdown.

No structural reinforcement needed. Interlock's metal roofing weighs extraordinarily little—the Slate profile installs at about 0.41 lb/sq ft, while the Tile profile runs roughly 0.59 lb/sq ft. That Mediterranean Tile look is about 96% lighter than real clay or concrete tile, so your existing framing handles it without modification. Most homes can install over their existing asphalt roof rather than tearing down to bare wood, saving money and disruption. A typical 2000 sq ft roof adds less total weight than a few inches of wet snow—something your house already handles every winter in Slabtown's 88 cm annual snowfall.

Yes. Interlock panels are warranted to resist winds up to 120 mph when installed to spec—well above the gusts your region typically experiences. Slabtown's typical daily-max winds run about 20 km/h with gusts reaching roughly 100 km/h, and the four-way interlocking system locks adjacent panels on all sides, creating a unified membrane rather than individual fastened shingles. That continuous interlocking is what gives metal roofing its superior wind performance compared to asphalt, which relies on adhesive and fasteners that fatigue over time. Insurance companies recognize this advantage; ask your agent about potential discounts when the roof is installed by a qualified contractor using rated fastening specs.

Interlock achieves UL 2218 Class 4 impact rating—the highest available—and the Guardian warranty even covers perforation from hailstones up to 1.5 inches. Most hail events in Wisconsin don't approach that severity, and the aluminum's inherent flexibility means small impacts don't create the permanent dents you see in steel roofing. The warranty covers impact-related loss of performance, not cosmetic marks. Talk to your insurance agent about the Class 4 rating and unprorated lifetime limited material warranty; many carriers offer premium reductions for verified impact-resistant roofs, which can offset the material cost over the roof's life.

Metal roofing requires almost no maintenance compared to asphalt or wood shakes. Asphalt shingles need annual inspection and gutter cleaning to prevent ice-dam buildup during Slabtown's freeze-thaw cycles—about 81 per year—and often fail by year 15. Wood shakes split and curl in that same freeze-thaw environment. Aluminum won't rot, split, curl, or lose shingles; you rinse the roof occasionally to shed dirt and keep gutters clear, just like any roof. The Alunar 70% PVDF coating is warranted 30 years against chalking and fading (ASTM D4214/D2244 tested), so you're not repainting or retreating. For most homeowners, that translates to one fewer recurring task and predictable, minimal cost over decades.

Metal costs more upfront but you buy it only once. Asphalt lasts 15–20 years and then you tear it off and landfill it—Slabtown's freeze-thaw cycles and 775 mm annual rain accelerate that failure. Metal roofing carries a lifetime limited, non-prorated material warranty for the original owner and remains functional for 50+ years, meaning it's genuinely the last roof you'll install. Factor in asphalt tear-off labor, disposal fees, and two or three replacement cycles over a homeowner's tenure, and metal's higher initial cost becomes a long-term savings. You also avoid the recurring maintenance, potential ice-dam repairs, and interior water damage that plague asphalt in freeze-thaw climates like yours.

Yes. Aluminum is about 95% recyclable at end of life, so when your roof eventually outlives your home, the material goes back into the supply chain rather than a landfill. Asphalt, by contrast, sheds into gutters and waterways during Slabtown's 775 mm annual rainfall and accumulates in landfills by the million tons yearly. Installing metal over your existing roof—which most homes can do because it weighs only about 0.41–0.59 lb/sq ft—eliminates the energy and emissions cost of tearing down and hauling away old material. The Alunar finish is PVDF-based and applied to both sides for durability, meaning fewer coating touch-ups over the roof's life. Choosing metal breaks the asphalt replacement cycle and aligns with CALGreen sustainability standards.

Interlock Metal Roofing has served the Slabtown area and Jefferson County since 2001, bringing over two decades of experience to local installs. The company manufactures all panels in Delta, BC, and maintains strict quality control through ICC-ES evaluation (ESR-1790, reissued 2025) and Intertek third-party testing. A local installer who knows your region's freeze-thaw patterns, snow loads, and wind gusts ensures your roof is spec'd and fastened correctly for conditions that average about 88 cm of snow annually and roughly 81 freeze-thaw days. Ask about references in your neighborhood and confirm that installation will be done to the rated specifications so your wind warranty (120 mph) and impact coverage (UL 2218 Class 4) remain valid.