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

Metal roofing sheds snow and ice far more effectively than asphalt because the smooth, hard surface prevents moisture from bonding and because the lightweight panels won't sag under New Munster's typical 82 cm of annual snow. The four-way interlocking design creates a unified, tight surface that won't develop the soft spots or valleys where ice dams form. Snow guards are available if you want to control how it slides—particularly useful on steep profiles like the Shake or Cedar Shingle. The aluminum's thermal conductivity also means less heat loss through the roof, which discourages ice formation on overhangs where gutters sit.

No—aluminum is immune to the freeze-thaw damage that weakens asphalt and ceramic tile. With about 80 freeze-thaw days per year in this area, that's a real benefit. Unlike asphalt, which becomes brittle when cold and soft when warm, aluminum simply expands and contracts uniformly; it never absorbs water, so there's nothing inside the material to freeze and crack. The Alunar 70% PVDF coating is warranted 30 years against chalking and fading even through this cycling. Over your roof's 50+ year lifespan, you'll watch asphalt roofs replaced twice while your metal roof weathers the same swings season after season without degradation.

Aluminum cannot rust because it contains no iron—the element that rusts is simply absent from the material. When aluminum is scratched or exposed, it forms an oxide layer naturally, and that layer self-heals over time. Even with New Munster's 835 mm of annual rainfall and Kenosha County's humid lake influence, aluminum remains stable. Steel roofing needs painted coatings to prevent rust; this one doesn't. The Alunar 70% PVDF fluorocarbon finish is applied to both sides of every panel, adding 30 years of fade and chalk protection, but the aluminum underneath will outlast that coating by decades. This is why Interlock panels have been installed everywhere from coastal salt-air homes to an Antarctic research station since 1998.

Yes—the panels are warranted to resist wind speeds up to 120 mph when installed to specification, and New Munster's typical gusts of 99 km/h (about 61 mph) are well below that threshold. The four-way interlocking design is the key: each panel locks to its neighbors on all four sides, creating a unified assembly that moves as one rigid structure rather than individual shingles that can lift and fail. That same engineering is why the standing seam profile—which has vertical mechanical seams—performs so well in wind-prone areas. Insurance companies and building inspectors recognize this difference; your roof won't have the progressive failure mode of loosening shingles that plagues asphalt over 20-30 years.

The panels carry UL 2218 Class 4 impact rating—the highest available—and the warranty even covers perforation from hailstones up to 1.5 inches. That level of durability often opens the door to insurance discounts because metal roofs don't require replacement after hail events the way asphalt does. Wisconsin sees its share of spring and summer storms; with about 3,094 sunshine hours and 835 mm of rain annually distributed across the year, hail exposure is real. Many homeowners recoup part of their roof investment through lower premiums over the first decade alone. Request a quote from your insurer once installation is complete and provide them the UL 2218 rating—they'll have tables showing what breaks and what doesn't.

No structural reinforcement is needed. The Slate profile installs at about 0.41 lb/sq ft, the Shake at 0.58 lb/sq ft, and even the Mediterranean Tile—which replicates 96% heavier concrete and clay—sits at just 0.59 lb/sq ft. Most existing roofs can carry that load without any bracing or framing upgrades. This also means you can install over your old asphalt shingles in many cases, skipping the labor and dump fees of a tear-off. The lightweight design is especially valuable in an area like New Munster where winter snow accumulation—about 82 cm per year—adds temporary load; the roof stays well within safe limits and won't compound that seasonal burden.

Metal roofing requires minimal maintenance—essentially gutter cleaning and the occasional inspection, the same as asphalt. Unlike asphalt, you won't replace individual shingles, deal with rot or splitting wood shake, or scrub mold from tile grout. The aluminum doesn't degrade from UV exposure; the Alunar 70% PVDF coating is CALGreen-verified for reduced maintenance and warranted 30 years against fading and chalking. In a climate with 80 freeze-thaw cycles per year, asphalt becomes increasingly brittle and prone to cracking; metal simply doesn't. Tile can crack in freeze-thaw; wood shake rots. You'll notice the difference after year five, when nearby asphalt roofs start showing wear while yours looks untouched.

The Guardian warranty is lifetime limited, non-prorated for the original owner—meaning there's no percentage reduction over time; you're covered the same at year 40 as year one for rusting, rotting, splitting, cracking, curling, and loss of impact resistance. It's also one-time transferable, giving the next owner 50 years of coverage from completion date. That matters for resale. Actual lifespan in Wisconsin's climate—with about 835 mm rain, 82 cm snow, and 80 freeze-thaw days annually—runs 50 to 70 years based on real-world installations across similar regions since 1998. You're buying the last roof you'll install on this house. Compare that to asphalt at 20-25 years and tile at 30-40 years, and the math becomes obvious.

energy-efficient colors can reduce cooling costs by reflecting heat that asphalt absorbs. The Aged Copper Penny finish, for example, has thermal emissivity of 0.84 and initial solar reflectance up to 0.55, meaning it bounces roughly half of incoming solar radiation back to the sky rather than converting it to heat in your attic. In New Munster's climate with about 3,094 sunshine hours per year, that reflection matters from May through September. Winter heating losses are minimal because metal conducts so little heat through its thin profile—you're not losing energy through the roof. The net effect depends on your insulation quality and HVAC system, but homeowners typically see 5-15% cooling savings and break-even or slight heating gains. energy-efficiency rating gives you the specific performance data for your color choice.

Interlock Metal Roofing, the manufacturer, has served this region directly since 2001—more than two decades of installations from Kenosha County through southern Wisconsin. They understand local snow loads, wind patterns, and ice-dam risk; they install new and over existing roofs; and they handle warranty claims without runaround. The company manufactures its panels in Delta, BC and has ICC-ES evaluation (ESR-1790, reissued 2025) for IBC and IRC compliance, so your installation meets current building code. When you call for a quote, you're calling the maker, not a middleman distributor. That direct relationship matters when you have questions five years in or when you need service. Ask for references from other New Munster and Kenosha County installations completed in the last five years.

Yes. New Munster averages about 82 cm of snow, 835 mm of rain, roughly 80 freeze–thaw days a year, with peak wind gusts near 99 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.