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

Yes. Joliet Township experiences about 81 freeze-thaw days per year, which causes asphalt to crack, curl, and lose granules. Aluminum has no pores to trap water and expand when frozen. The 3105-H24 aluminum alloy used in Interlock panels cannot rot or split. Its oxide layer self-heals when scratched, so micro-damage from thermal cycling doesn't accumulate. You avoid the typical five-to-seven-year asphalt replacement cycle in this climate.

Metal roofing sheds snow and ice faster than asphalt because aluminum conducts heat, warming the surface slightly. Joliet averages about 70 cm of snow annually. Four-way interlocking panels create a monolithic surface that prevents ice damming at eaves. Add snow guards if desired for aesthetics or to manage large slides. The Guardian warranty covers full performance under snow load; the light weight (Slate at 0.41 lb/sq ft) also means no structural reinforcement needed, even on older homes.

No. With about 1102 mm of rain annually, leak protection is critical. Interlock's four-way interlocking aluminum panels overlap on all sides and edges. Water flows over and off; none enters the seams. When installed over a solid deck and underlayment, the system is as quiet and watertight as traditional asphalt, with no deterioration risk. The ICC-ES ESR-1790 evaluation confirms performance under the IRC water-resistance standard.

Absolutely. Joliet experiences typical daily winds around 20 km/h with gusts up to 102 km/h. Interlock panels are warranted to resist wind speeds up to 120 mph (193 km/h) when installed to specification. The four-way interlocking design locks panels on all four sides, distributing force across the entire roof. This exceeds your region's actual gust conditions by a wide margin, and The Guardian warranty guarantees coverage.

Yes. Interlock metal roofing carries a UL 2218 Class 4 impact rating—the highest available—and the warranty even covers hailstone perforation up to 1.5 inches. Illinois hail events can trigger insurance claims; a Class 4 rating may lower your premium and proves durability to insurers. Many homeowners recover roof costs through reduced insurance premiums over the warranty term. Ask your agent about discounts on a metal roof with Class 4 impact resistance.

No reinforcement required. Interlock's Slate profile installs at just 0.41 lb/sq ft; the Tile profile is about 96% lighter than concrete or clay tile. Most existing roofs can support this load without structural work. Older homes especially benefit because you avoid the cost and disruption of beam repairs. The light weight also reduces stress on fasteners and allows installation directly over most existing roofs, saving labor and landfill waste.

Aluminum contains no iron, so it cannot rust. Steel oxidizes and pits; aluminum develops a thin, self-healing oxide layer that stops corrosion at the surface. Even in salt-air climates, Interlock panels are coated with Alunar 70% PVDF fluorocarbon finish on both sides, warranted 30 years against chalking and fading. Joliet's freeze-thaw stress and seasonal moisture won't trigger rust. You avoid the catastrophic failure mode that steel roofs face as they age.

The Guardian warranty is lifetime limited and non-prorated for the original owner, covering rusting, rotting, splitting, cracking, curling, and loss of impact resistance. It's transferable once to the next owner for 50 years from completion. In Joliet's 81 freeze-thaw days per year, asphalt fails in 15–20 years. Metal roofing routinely lasts 50+ years. The coating is separately warranted 30 years against fading, so you buy the last roof you'll install.

Yes. Aluminum is approximately 95% recyclable at end of life. Asphalt shingles are torn off every 15–20 years and sent to landfills; Joliet Township alone generates thousands of tons annually. Metal roofing eliminates this cycle. Interlock panels have been manufactured since 1998 in Delta, BC, and installed worldwide, from coastal homes to Antarctic research stations. Choosing metal also reduces your carbon footprint because energy-efficient colors reflect heat, lowering cooling costs over decades.

Interlock Metal Roofing has served the region since 2001 and specializes in residential metal roof installation throughout Will County. Our team is trained on all five profiles—Slate, Cedar Shingle, Shake, Standing Seam, and Mediterranean Tile—and handles everything from inspections to installation over existing roofs. We're familiar with Joliet's climate challenges, local building codes, and contractor networks. Contact us for a no-obligation estimate and to learn how metal roofing applies to your home's age and condition.