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

Yes. Aluminum does not absorb moisture, so it cannot crack, split, or degrade from the approximately 79 freeze-thaw days Washington Park experiences annually. Asphalt shingles absorb water, expand when frozen, and contract when thawed—a cycle that accelerates failure. The Alunar 70% PVDF coating is warranted 30 years against cracking and crazing, and the non-porous aluminum substrate means no ice-dam-driven leaks at valleys where water penetrates asphalt seams. Your roof survives the cycle; asphalt does not.

The four-way interlocking design and smooth panel profiles shed heavy snow loads without pooling. At roughly 88 cm of snow per year and gusts reaching 96 km/h, snow slides off cleanly rather than accumulating in valleys. The lightweight aluminum—Shake profile weighs just 0.58 lb/sq ft—supports full snow load without structural reinforcement, unlike slate or concrete tile. Optional snow guards can be installed where needed. The interlocked seams remain watertight even under heavy snowmelt because they lock perpendicular to water flow.

Yes—warranted to 120 mph (193 km/h), well above the typical 96 km/h gusts in Washington Park. The four-way interlocking aluminum panels mechanically lock each panel to its neighbors, distributing wind load across the entire roof rather than relying on adhesive or fastener strength alone. This design exceeds ICC-ES ESR-1790 wind uplift requirements. Even in extreme gusts, the locked seams prevent panel separation or lift. When installed to specification, your roof stays secure.

Aluminum contains no iron, so it cannot oxidize into rust. Instead, a thin, transparent aluminum oxide layer forms and self-heals when scratched—a natural process that protects the metal underneath indefinitely. The roofing-grade 3105-H24 aluminum alloy (ASTM B209) is bonded with the Alunar 70% PVDF fluorocarbon finish on both sides, adding 30-year coating protection. In Milwaukee County's 822 mm annual rainfall, a steel roof would corrode from the inside out; aluminum thrives. Steel roofs require 10-15 year recoating; Interlock aluminum does not.

No. The Mediterranean Tile profile weighs approximately 0.59 lb/sq ft—about 96% lighter than genuine concrete or clay tile—so no beam reinforcement is needed. You can install directly over most existing roofing, avoiding costly structural work and the waste of tear-off debris. Traditional tile roofing requires significant framing upgrades; Interlock's aluminum tile delivers the visual weight without the engineering cost or timeline delays. Your home's existing roof structure supports it.

Interlock metal roofing carries a UL 2218 Class 4 hail rating—the highest impact classification available—and the warranty even covers perforation from hailstones up to 1.5 inches. Many insurers offer premium discounts for impact-resistant roofing. Check with your carrier about credits; the Class 4 rating and Guardian Warranty documentation often qualify you. This durability translates to lower long-term risk and potentially lower annual costs compared to asphalt shingles, which degrade under hail and require replacement every 15-20 years.

Metal roofing reflects rather than absorbs summer heat, cooling your home and reducing air-conditioning load. energy-efficient Interlock colors have thermal emissivity up to 0.84 and solar reflectance to 0.55 (Aged Copper Penny profile), reflecting heat that asphalt absorbs. At 3128 annual sunshine hours in Washington Park, this reflectance adds up over months and years. Cool Roof Rating Council ratings confirm measurable energy savings. Combined with a properly ventilated attic, metal roofing can lower summer cooling costs 10-25% compared to dark asphalt, offsetting some material cost over the roof's lifetime.

The Guardian Warranty is a lifetime limited, non-prorated material warranty for the original owner—covering rusting, rotting, splitting, cracking, curling, and loss of impact resistance with no degradation schedule. It transfers once to the next owner with 50 years of coverage from completion, protecting your home across decades and adding resale value. The Alunar coating is warranted separately for 30 years against fading and chalking (ASTM D4214). Manufactured since 1998 and installed on structures from coastal salt-air homes to Antarctic research stations, these roofs routinely exceed 50 years in harsh climates far worse than Milwaukee County's 79 annual freeze-thaw days.

Metal roofing requires minimal maintenance—occasional gutter cleaning and seasonal inspection. Unlike asphalt, which requires annual nail-pop and granule loss monitoring and re-sealing, or wood shakes, which need treatment against rot and moss in Wisconsin's 822 mm annual rainfall, aluminum panels are inert and self-protecting. The non-porous surface resists moss and algae. No tar or coating reapplication is needed. CALGreen verification confirms reduced maintenance lifecycle compared to traditional materials. Most Interlock owners report near-zero maintenance over 20+ years, freeing time and money for other home projects.

Yes. Interlock Metal Roofing has served the region since 2001 and is your local installer for Washington Park and surrounding Milwaukee County. A 23-year local track record means the installer understands Wisconsin weather, freeze-thaw challenges, snow loads, and the specific structural details of homes in this area. Local installation supports faster scheduling, nearby warranty service, and direct accountability. When your roof is complete, your installer is part of the community, not a traveling crew.

Yes. Washington Park 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.