Metal Roofing in South Haven, Minnesota — Lifetime Interlock® Aluminum Shingles Installed Locally

Aluminum sheds snow and ice faster than asphalt because its smooth, hard surface won't trap moisture—critical when you're facing about 83 freeze-thaw days per year here. The four-way interlocking panels lock together so tightly that snow and ice slide cleanly without creating dams at the edges. Unlike wood or composite materials, aluminum won't absorb water, split, or degrade when frozen water expands inside the material. This matters in Wright County winters: your roof stays structurally sound year after year while asphalt becomes brittle and loses granules in the cold.

No—aluminum cannot rust because it contains no iron. When aluminum is scratched or exposed to air, it forms a thin oxide layer that self-heals, protecting the material underneath. Interlock uses roofing-grade 3105-H24 and 3003-H24 aluminum alloy (ASTM B209) with a Alunar 70% PVDF fluorocarbon finish applied to both sides, warranted 30 years against chalking and fading. This matters in Minnesota where rainfall averages 683 mm yearly and temperatures cycle through freezing: steel roofing will oxidize and corrode, but your Interlock roof will look and perform the same decade after decade.

No structural work is needed. Interlock's Mediterranean Tile profile weighs only about 0.59 lb per square foot—roughly 96% lighter than concrete or clay tile—so it installs directly over most existing roofs without reinforcing beams or trusses. Compare that to traditional tile, which requires expensive framing upgrades. Because aluminum is so light, installation is faster, labor costs drop, and you can often cover an old asphalt roof in one day, eliminating the mess and expense of a tear-off and haul-away to the landfill.

Yes. South Haven experiences typical daily winds around 20 km/h with gusts reaching 108 km/h, and Interlock panels are warranted to resist sustained winds up to 120 mph (193 km/h) when installed to specification. The four-way interlocking system locks each panel on all four sides, so wind pressure can't peel or lift them. This design is why Interlock roofs have been installed from coastal salt-air homes to an Antarctic research station since 1998—the system simply works in harsh conditions, and your roof won't fail in a spring thunderstorm or winter gust.

Interlock achieves UL 2218 Class 4 impact rating—the highest available—and the warranty even covers perforation from hailstones up to 1.5 inches. Because aluminum is non-combustible and durable under extreme impact, some insurers offer premium discounts for metal roofs in hail-prone regions. Wright County's climate includes occasional severe weather, so the combination of proven impact resistance and potential insurance savings can offset a portion of your installation cost over time. Ask your agent about a metal-roof discount before you decide.

Yes. energy-efficient Interlock colors reflect heat away from your home rather than absorbing it like dark asphalt does. Reflectance values reach 0.55 for certain colors, and the aluminum has thermal emissivity of 0.84, meaning it radiates absorbed heat efficiently. South Haven averages about 3127 sunshine hours per year, so this reflective property compounds over months of warm weather—your air conditioner runs less, cutting electricity use and extending the life of your cooling system. The Cool Roof Rating Council has rated these colors, so the energy savings are independently verified, not just marketing claims.

Installation typically takes one to three days depending on roof size and complexity. Because Interlock panels are so light (the Shingle profile installs at 0.41 lb per square foot), you can often install them directly over an existing asphalt roof—no tear-off needed. This saves weeks of mess, hauling, and labor cost. The interlocking system is straightforward: each panel locks to its neighbors, fastening is simple, and experienced installers work efficiently. Interlock has served this region since 2001, so local crews know the local weather, building codes, and the fastest, cleanest way to get your new roof weathertight.

Yes. Aluminum is non-combustible, and Interlock offers Class A fire classification—the highest rating available. The ICC-ES evaluation report ESR-1790 (reissued 2025) confirms compliance with International Building Code and International Residential Code fire standards. Some homeowners insurance policies also offer discounts for Class A roofs. If a wildfire or structure fire ever threatens your area, you want a roof that won't ignite or spread flame; aluminum delivers that peace of mind. Many municipalities now require or strongly prefer Class A roofs for new construction or major renovations.

Yes. Interlock aluminum is approximately 95% recyclable, and it ends the asphalt tear-off-to-landfill cycle that happens every 15 to 25 years with shingles. Every time asphalt is torn off, it's hauled to a landfill; you'll do that three or four times in your lifetime if you stay with shingles. Metal roofing lasts 50+ years with the same appearance and strength, eliminating repeated tear-offs and waste. CALGreen verification confirms Interlock's reduced-maintenance design. Over the lifespan of your home, choosing aluminum means far less material waste and a roof that can be recycled at end-of-life rather than buried.

Interlock requires virtually no maintenance. Unlike asphalt shingles, which lose granules every year and need periodic replacement, or wood shakes, which split and rot and need constant sealing and repair, aluminum doesn't absorb water, doesn't degrade in UV light (thanks to the 30-year Alunar coating), and won't attract mold or insects. You don't power-wash or treat it. Gutters stay cleaner because metal doesn't shed debris the way composition shingles do. Over 50 years, this adds up to huge savings in labor, chemicals, and repairs—plus fewer service calls and no surprises. It's a true set-and-forget roof.

Yes. South Haven 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.