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

Metal roofs shed snow effectively because aluminum panels are non-porous and their smooth interlocked seams resist ice damming. Brown Deer averages about 88 cm of snow yearly, and the four-way interlocking design prevents water infiltration at panel joints—a critical advantage during the region's roughly 79 freeze-thaw cycles per year. Unlike asphalt, which absorbs moisture and degrades under repeated freezing, aluminum's oxide layer self-heals and remains unaffected by freeze-thaw stress. Optional snow guards can be installed if you want to control snow slide for safety.

No. Aluminum cannot rust or rot, so freeze-thaw cycling—which Brown Deer experiences roughly 79 times per year—poses no structural risk to the material itself. The roofing-grade 3105-H24 and 3003-H24 aluminum alloys used in Interlock panels are engineered to withstand repeated temperature swings without cracking, splitting, or losing integrity. Wood shingles and asphalt shingles both absorb moisture and fail under the same freeze-thaw stress that aluminum resists. This resilience is one reason the Guardian Warranty covers cracking and splitting.

Aluminum cannot rust because it contains no iron. When aluminum is exposed to oxygen, it forms a protective oxide layer that seals the surface; if scratched, this layer self-heals automatically. Interlock panels use roofing-grade 3105-H24 and 3003-H24 aluminum alloy (ASTM B209) coated with Alunar 70% PVDF fluorocarbon finish on both sides—the two-sided coating is especially important in climates with seasonal moisture and Brown Deer's 822 mm of annual rainfall. Steel roofing, by contrast, rusts when the coating is breached. The Guardian Warranty guarantees no rusting for the original owner's lifetime.

No structural reinforcement is needed. The Interlock Mediterranean Tile profile installs at just 0.59 lb/sq ft—about 96% lighter than concrete or clay tile—so it can be installed over most existing roof structures without upgrading framing or support. The Slate profile is similarly light. This lightweight advantage means you avoid costly structural work, and the roof can often be installed directly over your existing asphalt shingles, cutting labor time and landfill waste. Brown Deer's typical wind gusts of 96 km/h are easily resisted by the four-way interlocking panels when installed to specification.

Yes. The four-way interlocking aluminum panels are warranted to resist sustained wind speeds up to 120 mph (193 km/h)—far exceeding Brown Deer's typical gusts of 96 km/h. Each panel locks to its neighbors on all four sides, creating a unified system that distributes wind load across the entire roof rather than relying on fasteners alone. This interlocking design, combined with proper installation, ensures that severe weather common to the region poses no threat to panel integrity. The Guardian Warranty covers wind damage when the roof is installed to specification.

Interlock metal roofing is rated UL 2218 Class 4 impact—the highest rating available—and the warranty even covers perforation from hailstones up to 1.5 inches. This non-combustible, impact-resistant construction often qualifies homeowners for insurance discounts; contact your insurer with the UL 2218 Class 4 rating and non-combustible aluminum specification. Over Brown Deer's 10-year normal period, the combination of heavy snow (88 cm yearly) and freeze-thaw cycling (79 days/year) tests roofing durability severely; the Class 4 rating ensures your roof performs under all these stressors without loss of impact resistance.

energy-efficient Interlock colors reflect heat rather than absorb it, with initial solar reflectance up to 0.55 and thermal emissivity of 0.84. In summer months when Brown Deer receives about 3,128 sunshine hours over a full year, reflective coatings significantly reduce heat gain compared to dark asphalt, lowering cooling costs. The Cool Roof Rating Council rating confirms this performance. While Wisconsin winters (mean 9.4°C) are cold, the reflective benefit during warmer months and the durable 30-year coating warranty mean long-term energy and maintenance savings outpace asphalt over the roof's 50+ year lifespan.

Aluminum metal roofing requires virtually no maintenance. Interlock panels don't need sealing, recoating, or replacement like wood shingles, and they won't curl, crack, or split under Brown Deer's roughly 79 annual freeze-thaw cycles. Asphalt shingles require periodic replacement; wood shingles demand constant upkeep. The Alunar 70% PVDF fluorocarbon finish is warranted against chalking and fading for 30 years, and the non-porous aluminum surface sheds dirt and debris naturally. Rain (about 822 mm yearly) and snow (about 88 cm) simply run off. Once installed, your roof is essentially maintenance-free.

The Guardian Warranty is a lifetime limited, non-prorated material warranty for the original owner—covering rust, rot, splitting, cracking, curling, and loss of impact resistance. It's one-time transferable, giving the next owner 50 years of coverage from completion. This means Interlock roofing is designed to be your last roof. The combination of non-rusting aluminum (ESR-1790 ICC-ES certified), UL 2218 Class 4 impact rating, 120 mph wind warranty, and 30-year coating durability means the roof resists every stressor Brown Deer's climate—snow, ice, freeze-thaw, wind gusts to 96 km/h—can impose over decades.

Yes. Aluminum is approximately 95% recyclable, and Interlock panels end the asphalt shingle tear-off-to-landfill cycle that repeats every 15-20 years. Because metal roofing can be installed over existing asphalt (no removal needed), you avoid immediate waste and the carbon cost of tearoff and disposal. Over a 50-year lifespan, one metal roof replaces multiple asphalt roofs, eliminating several tons of landfill waste and reducing manufacturing impact. Interlock has been manufacturing in Delta, BC since 1998 and is CALGreen-verified for reduced maintenance, confirming that aluminum roofing's environmental advantage extends from installation through the roof's entire lifespan.