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

Yes—aluminum actually thrives in freeze-thaw cycles because it has no iron, so it cannot rust when water gets into seams or under panels. With about 82 freeze-thaw days per year in Cook County and roughly 73 cm of snow, the material expands and contracts without cracking or splintering. Asphalt and wood both fail faster under these swings. The four-way interlocking design sheds water before it pools, and the PVDF coating (warranted 30 years) stays flexible in subzero temps.

Aluminum cannot rust—it contains no iron, which is what rusts. Instead, it forms a self-healing oxide layer that protects the metal underneath; if the coating scratches, that oxide repairs itself over time. Steel roofing panels rust through in wet climates, but with 993 mm of annual rainfall in Northlake plus snow melt, aluminum keeps performing year after year. The Alunar PVDF fluorocarbon finish is applied to both sides of every panel for extra salt and moisture resistance.

Metal roofs shed snow and ice faster than asphalt because the smooth, slippery surface won't hold weight the way rough shingles do. With about 120 cm of snow falling annually in Cook County, that matters—gravity works harder for you. The four-way interlocking seams don't trap meltwater; it flows straight down to gutters and downspouts. You can add snow guards if you want to control shedding, but the roof itself resists ice dam formation because there's no temperature differential trapping water under the coating.

Interlock aluminum roofing carries a UL 2218 Class 4 impact rating—the highest available—and the Guardian warranty even covers perforation from hailstones up to 1.5 inches. That's the same rating as premium asphalt shingles, but the metal won't bruise, dent, or lose its protective coating from typical hail. Check with your Northlake insurance agent; some carriers offer premium discounts for Class 4 roofs because claims are rare. A few minutes on the phone can offset your material cost.

Absolutely. Gusts in Cook County reach about 97 km/h, and Interlock panels are warranted to resist wind speeds up to 120 mph (193 km/h) when installed to specification. The secret is the four-way interlocking system—each panel locks to its neighbors on all four edges, so wind pressure can't peel up a single corner. No fasteners cross the panels, and no exposed screws trap water or work loose over time. That design is why these roofs have been installed in coastal salt-air homes and Antarctic research stations without fail.

The Mediterranean Tile profile is about 96% lighter than real concrete or clay tile, so you won't need structural reinforcement. It installs at roughly 0.59 pounds per square foot, compared to 1,200+ pounds per square foot for genuine tile. That means you can replace an old asphalt roof with Interlock Tile and install it directly over your existing deck—no costly framing upgrades. For a Northlake home, that's instant savings before you even talk about the lifetime warranty or energy benefits.

The Guardian warranty is lifetime limited for the original owner—it covers rusting, rotting, splitting, cracking, curling, and loss of impact resistance, and it's non-prorated, meaning you never pay a percentage of the claim. If you sell, the warranty transfers once and gives the next owner 50 years from completion. With material manufactured since 1998 and installed everywhere from coastal homes to Antarctic stations, field evidence backs the promise. Most owners never file a claim; the roof simply outlasts the house.

Metal costs more upfront but it's your last roof. Asphalt needs replacement every 15–20 years; over 50 years you buy it three times plus removal, landfill fees, and labor. Interlock installs over your existing roof, cuts labor time, and never needs tear-off. The PVDF coating is warranted 30 years against fading, and the aluminum itself won't split from Northlake's 82 annual freeze-thaw cycles. After two or three asphalt cycles, the metal roof has paid for itself in avoided replacements, plus you gain energy savings, insurance potential, and resale appeal.

energy-efficient Interlock colors reflect heat instead of absorbing it like asphalt does. Thermal emissivity reaches 0.84 and solar reflectance up to 0.55 (Aged Copper Penny), meaning less heat enters the attic. Northlake gets about 3,051 hours of sunshine yearly, so a reflective roof works every clear day. The energy-efficiency rating and Cool Roof Rating Council certification back measurable savings in cooling costs. You'll notice it most in summer, but winter benefits too—the roof's reflectivity doesn't degrade over the 30-year coating warranty.

What happens to my old roof, and is metal roofing better for the environment?