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

Metal roofs shed snow and ice more reliably than asphalt because the smooth aluminum surface and interlocking panel design prevent ice dam buildup. Watertown Township gets about 90 cm of snow yearly, which slides off faster than it accumulates on shingles. The four-way interlocking panels and solid deck installation create a thermal bridge that reduces the temperature differential that causes ice dams in the first place. Snow guards can be added if you want to control where snow exits.

No. Watertown Township experiences roughly 81 freeze-thaw days per year, and aluminum handles this better than materials that absorb moisture. Aluminum oxide doesn't absorb water, so it won't expand or contract with temperature swings the way wood or asphalt does. The 3105-H24 aluminum alloy used in Interlock panels maintains its structural integrity through repeated freezing and thawing, and the Alunar coating (warranted 30 years) protects against corrosion that could develop from salt spray or road salt drift.

Aluminum cannot rust because it contains no iron. Instead, it develops a thin oxide layer that actually protects the metal beneath—and when scratched, this oxide layer self-heals. In Watertown Township, where you see ~748 mm of annual rainfall and winter road salt use, this matters: steel rusts from salt and moisture, but aluminum simply doesn't. Interlock's roofing-grade 3105-H24 and 3003-H24 aluminum alloy (ASTM B209 certified) is installed on homes from coastal salt-air regions to Antarctica, proving it outlasts corrosion concerns entirely.

No structural reinforcement is needed. Watertown Township experiences typical wind gusts around 97 km/h, and Interlock's four-way interlocking aluminum panels are warranted to resist wind speeds up to 120 mph (193 km/h) when installed to specification. The interlocking design distributes wind loads across the entire panel system rather than concentrating stress on individual fasteners, so your existing roof structure handles these loads without additional bracing or reinforcement.

Yes, in most cases. Interlock's metal roofing is extraordinarily lightweight—the Shingle profile installs at roughly 0.41 lb/sq ft, and even the Mediterranean Tile profile weighs only about 0.59 lb/sq ft, making it 96% lighter than concrete or clay tile. This means no structural reinforcement is needed, and you can install over most existing roofs, which saves money on removal and disposal. A local structural assessment is always wise, but the weight difference between metal and traditional tile or slate eliminates the barrier that stops most homeowners from choosing those looks.

Interlock metal roofing carries a UL 2218 Class 4 impact rating—the highest available—and the Guardian Warranty covers perforation from hailstones up to 1.5 inches. Minnesota hail events can be intense, and aluminum's strength (combined with proper installation over a solid deck) means your roof absorbs impact without denting or compromising. Many insurers recognize this durability and offer premium discounts on metal roofs with Class 4 ratings, so you may lower your annual insurance cost while gaining peace of mind.

Metal roofing requires significantly less maintenance than asphalt. Asphalt shingles deteriorate from the sun's UV rays and the repeated freeze-thaw cycles Watertown Township experiences (about 81 per year), requiring regular inspection and eventual replacement. Aluminum with Alunar's 70% PVDF fluorocarbon finish (warranted 30 years against chalking and fading per ASTM standards) simply doesn't degrade that way. Twice-yearly gutter cleaning is standard; moss or mildew growth is rare on metal. You've essentially eliminated the maintenance cycle that defines asphalt ownership.

Installation typically takes 3–7 business days, depending on roof size and complexity. Yes, you can install over existing asphalt shingles—the four-way interlocking design and light weight (~0.41–0.59 lb/sq ft) mean no tearoff is required in most cases. This saves days of labor and eliminates haul-away costs and landfill impact. A solid deck is installed beneath the panels, which also improves insulation and reduces rain noise. Interlock Metal Roofing has been serving the region since 2001, so the local team knows Watertown Township's typical roof configurations and site conditions.

Interlock's Guardian Warranty is a lifetime limited, non-prorated material warranty for the original owner—it covers rusting, rotting, splitting, cracking, curling, and loss of impact resistance. When you sell, it transfers once to the next owner for 50 years from completion. Few roofing products offer that combination: you get security for as long as you own the home, and the next owner gets a valuable 50-year safety net. In a market where roofs typically last 15–25 years, this warranty reflects aluminum's real durability in climates like Watertown Township's with 748 mm rain and 90 cm snow annually.

Aluminum metal roofing is about 95% recyclable, which means at the end of its exceptionally long life, it returns to the material stream rather than a landfill. Asphalt shingles, by contrast, are torn off every 15–25 years and become permanent waste—multiplied across thousands of homes in Carver County, that's millions of pounds in landfills yearly. Choosing Interlock's aluminum ends that cycle for your home. Plus, its energy-efficient colors (thermal emissivity up to 0.84) reflect heat that asphalt absorbs, reducing cooling demand during Watertown Township's roughly 3,163 sunshine hours per year.

Yes. Watertown Township averages about 90 cm of snow, 748 mm of rain, roughly 81 freeze–thaw days a year, with peak wind gusts near 97 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.