Metal Roofing in Manhattan, Illinois — Lifetime Interlock® Aluminum Shingles Installed Locally

Yes—Interlock panels come in five profiles: Slate, Cedar Shingle, Shake, Standing Seam, and Mediterranean Tile. Each one uses four-way interlocking aluminum to replicate the texture and shadow lines of the traditional material it's named for. The profiles sit flush against your deck, so from street level the visual difference from actual slate or shake is not obvious. You get the architectural character you want without the weight penalty or maintenance burden those materials demand in Will County's 81 annual freeze-thaw cycles.

Aluminum cannot rust because it contains no iron. Instead, it forms a self-healing oxide layer on its surface that actually protects the underlying metal—and if that layer gets scratched, it reforms on its own. Interlock uses roofing-grade 3105-H24 and 3003-H24 aluminum alloy coated with Alunar 70% PVDF fluorocarbon on both sides, warranted 30 years against fading and chalking. Combined with Will County's roughly 1102 mm of annual rainfall and temperature swings across 81 freeze-thaw days, this protection means no rust bloom, no perforation, and no accelerated corrosion.

Aluminum expands and contracts with temperature, but because the panels are individually interlocked rather than nailed solid, they move independently without transferring stress to fasteners or seams. With about 81 freeze-thaw days per year in Will County and roughly 70 cm of snow, this flexibility prevents the ice-dam-driven leaks and fastener pull-through that plague asphalt and rigid metal roofs. The panels won't crack, curl, or split under repeated cycles—those failures are actually covered under the Guardian lifetime warranty for the original owner.

No. Interlock's Tile profile installs at about 0.59 lb/sq ft—roughly 96% lighter than concrete or clay tile—so no structural reinforcement is needed. Even the heavier Shake profile comes in at 0.58 lb/sq ft. This light weight is crucial in snow country: Will County averages about 70 cm of snow yearly, and aluminum's low mass means your existing framing handles winter loads without costly upgrades. You can often install over your existing roof, which saves a tear-off and keeps old material out of the landfill.

Yes. Interlock panels are warranted to resist wind speeds up to 120 mph when installed to specification. Will County's typical gusts reach about 102 km/h (63 mph), so the roof carries a 90% safety margin. Four-way interlocking means each panel locks to its neighbors on all sides, distributing wind load across the entire system rather than concentrating stress at individual fasteners. This design is proven from coastal salt-air homes to Antarctic research stations—if it holds in extreme climates, it handles Midwestern spring storms without question.

Metal roofing actually sheds snow and ice more readily than asphalt because its smooth, slippery surface doesn't hold melt water the way porous shingles do—reducing the standing water that freezes into dams. With about 70 cm of snow annually in Will County, good attic ventilation and proper soffit venting prevent most ice dam conditions. If you need additional control, snow guards install to the panels just as they would to any roof. The lightweight aluminum (about 0.59 lb/sq ft for Tile) means snow loads accumulate less weight overall compared to slate or tile, easing structural stress during heavy season.

Interlock holds a UL 2218 Class 4 impact rating—the highest available—and the Guardian warranty covers perforation from hailstones up to 1.5 inches. Class 4 means the roof withstands repeated strikes from steel balls larger than typical hail. Many insurers recognize this durability and offer premium discounts for metal roofs, though you'll want to confirm your carrier's policy. Will County sees hail events, and because aluminum won't dent permanently or lose its integrity the way asphalt shingles fail, you often avoid claims altogether—a real saving over 30 to 50 years.

energy-efficient Interlock colors reflect solar heat that asphalt absorbs, with initial reflectance up to 0.55 and thermal emissivity of 0.84, keeping the roof itself cooler. Will County receives about 3056 hours of sunshine per year, so reflective coatings meaningfully reduce cooling load. Metal roofs don't retain heat the way dark asphalt does—your attic and upper floors stay more moderate without cranking air conditioning. Over a 40 or 50-year lifespan, that steady reduction in summer peak demand can offset the initial roofing cost, especially in energy-conscious older homes common to this region.

Upfront cost is higher, but it's the last roof you'll buy. Asphalt shingles last 15 to 20 years in climates with freeze-thaw stress like Will County's 81 annual cycles—then you tear off, haul, and replace again. Interlock carries a lifetime limited warranty, non-prorated for the original owner, and one transfer to the next owner good for 50 years from completion. Over 50 years, one metal roof replacement versus three asphalt cycles eliminates two tear-offs, labor, and disposal costs. Add energy savings from reflective coatings and potential insurance discounts, and the total cost of ownership favors aluminum decisively.

Virtually none. Asphalt shingles need moss and algae treatment, especially in wet climates; wood shakes require regular sealing and split repair; slate and tile demand remortar work and crack filling. Interlock aluminum doesn't rot, split, or support algae growth. Will County's roughly 1102 mm of annual rainfall is plenty to self-clean the roof surface—just let rain do the work. The 30-year Alunar coating warranty covers color and gloss retention, so you won't see chalking or fading. Annual gutter cleaning is your only real task, same as any roof. That simplicity saves labor, money, and peace of mind across decades.