Metal Roofing in Santiago Township, Minnesota — Lifetime Interlock® Aluminum Shingles Installed Locally

Interlock panels shed snow and ice effectively because aluminum expands and contracts minimally—unlike asphalt, which becomes brittle in Minnesota's 83 annual freeze-thaw days. The four-way interlocking design prevents water infiltration during the region's ~96 cm of annual snowfall. Aluminum's non-porous surface resists the ice-damming and moisture trapping that degrades asphalt within 15–20 years. Optional snow guards hold accumulation on steep profiles if desired. The material's performance has been proven in far harsher climates, from coastal salt-air zones to Antarctic research stations.

Aluminum cannot rust because it contains no iron—the element that oxidizes and corrodes in steel. Instead, aluminum develops a self-healing oxide layer that closes automatically when scratched or damaged. Interlock's roofing-grade 3105-H24 and 3003-H24 aluminum alloy (ASTM B209) is further protected by a two-sided Alunar 70% PVDF fluorocarbon finish warranted 30 years against chalking and fading. With ~683 mm of annual rainfall and gusts reaching 108 km/h in Sherburne County, this dual-layer defense keeps your roof performing where steel would corrode within years.

No. Aluminum's coefficient of expansion is low and predictable, so the 83 freeze-thaw cycles Santiago Township experiences annually do not crack, curl, or split the panels as they do asphalt, wood shake, or ceramic tile. The four-way interlocking design accommodates minor thermal movement without stressing seams. Ice dams—a major cause of freeze-thaw damage in wood and asphalt roofs—rarely form on smooth metal surfaces, which shed meltwater faster during Minnesota's ~96 cm winter snowfall. The Guardian Warranty covers splitting and cracking for the original owner's lifetime.

Yes. Interlock panels are warranted to resist sustained wind speeds up to 120 mph (193 km/h) when installed to specification. Santiago Township's typical gusts reach 108 km/h, well within this rated capacity. The four-way interlocking system—where each panel locks on all edges to adjacent panels—distributes wind load across the entire roof assembly rather than stressing individual fasteners. This engineering has been validated in ICC-ES evaluation report ESR-1790 (2025 reissue) and proven across installations from coastal regions with extreme wind exposure to landlocked areas with seasonal thunderstorms.

No structural reinforcement is needed. Interlock's Mediterranean Tile profile weighs just ~0.59 lb/sq ft—about 96% lighter than concrete or clay tile—while the Cedar Shingle and Slate profiles weigh ~0.41 and ~0.58 lb/sq ft respectively. Most homes' existing framing easily supports this load. The light weight also allows installation over existing asphalt shingles without removal, saving thousands in labor and disposal costs. This advantage becomes especially valuable in older Santiago Township homes where structural upgrades would be costly. The warranty applies whether you install over existing shingles or bare deck.

Metal roofing is genuinely the last roof you will install. Asphalt shingles cost $8,000–12,000 per replacement every 15–20 years in Minnesota's climate, meaning two replacements over 40 years. Interlock's lifetime limited, non-prorated Guardian Warranty for the original owner eliminates future material costs. Added value comes from no maintenance (unlike wood shake that requires treatment), dramatically lower energy costs via energy-efficient colors with 0.84 thermal emissivity, and potential home resale premiums. With ~3,127 annual sunshine hours in the region, reflective coatings reduce cooling demand year after year. Over 50 years, the math favors aluminum decisively.

Interlock panels carry UL 2218 Class 4 impact rating—the highest available—and the warranty covers perforation from hailstones up to 1.5 inches. This class rating often qualifies homeowners for insurance discounts because the roof resists damage that would total an asphalt roof. Many insurers recognize metal's durability and reduce premiums accordingly. Class 4 hail rating means the panels were impacted with steel balls dropped from 20 feet with no penetration. While Santiago Township's hail risk is moderate compared to the Great Plains, this proven impact resistance provides peace of mind and tangible insurance savings.

The Guardian Warranty is a lifetime limited, non-prorated warranty for the original homeowner—meaning no diminishing coverage. It covers rusting, rotting, splitting, cracking, curling, and loss of impact resistance, with no exclusions for age. The warranty is one-time transferable to the next owner, providing a 50-year term from completion. This structure reflects aluminum's actual durability: Interlock has manufactured roofing panels since 1998, with installations performing reliably across 27 years in diverse climates. No asphalt, wood, or traditional tile roof comes with this combination of scope and term.

Virtually none. Unlike asphalt shingles that degrade under UV and temperature cycling, wood shake that splits and rots, or clay tile that cracks, aluminum requires no sealing, treatment, or preventive repair. Interlock panels are CALGreen-verified for reduced maintenance. Twice yearly, rinse gutters and debris off the roof; that suffices. The two-sided Alunar PVDF coating resists chalking and fading for 30 years, and the underlying aluminum does not degrade. With ~683 mm of annual rainfall in the region keeping the roof naturally clean, and no freeze-thaw cracking to monitor, you eliminate the constant repair cycle that plagues other materials in Minnesota's climate.

Interlock Metal Roofing has served the Sherburne County region since 2001—over two decades of local installation experience. The company knows Santiago Township's specific climate challenges: ~96 cm annual snow, 83 freeze-thaw cycles, and gusts to 108 km/h. Your installer understands how to spec snow guards for steep profiles, ensure proper interlocking in high-wind exposure, and integrate underlayment to keep the roof asphalt-quiet during Minnesota's rainy season (~683 mm annually). They handle start-to-finish permitting, structural assessment, and installation to ICC-ES ESR-1790 specification, with warranty registration backing every job.

Yes. Santiago Township averages about 96 cm of snow, 683 mm of rain, roughly 83 freeze–thaw days a year, with peak wind gusts near 108 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.