Metal Roofing in Lewisville, Washington — Lifetime Interlock® Aluminum Shingles Installed Locally

Yes—aluminum's smooth, non-porous surface sheds snow and ice far more effectively than asphalt. Lewisville averages about 163 cm of snow annually with roughly 22 freeze-thaw days, which accelerates asphalt deterioration; metal panels resist that cycle entirely. The four-way interlocking system keeps water out, and optional snow guards direct runoff safely. Aluminum won't crack, split, or curl from thermal stress like wood or asphalt do.

The four-way interlocking aluminum panels overlap in a pattern that channels water downward and outward, never pooling or seeping upward. Combined with solid deck underlayment, this design handles Lewisville's heavy precipitation without compromise. The mineral oxide layer on aluminum never deteriorates like asphalt or wood fibers, so the seal stays tight for decades. Each panel locks mechanically—no reliance on sealants that dry and fail.

Absolutely. The four-way interlocking system is warranted to withstand wind speeds up to 120 mph (193 km/h) when installed to specification. Lewisville's typical gusts reach about 115 km/h, so you have a safety margin. The interlocking geometry distributes uplift forces across panels rather than concentrating stress on fasteners alone. This is verified under ICC-ES ESR-1790, which covers installation for the Pacific Northwest's wind conditions.

No structural work needed. The Slate profile installs at just 0.41 lb/sq ft, and even the Mediterranean Tile—which replicates heavy clay or concrete—weighs only about 0.59 lb/sq ft, roughly 96% lighter than the real thing. Most homes' framing easily carries this load, so installation typically happens over your existing roof without costly modifications. This also speeds installation and eliminates old asphalt tear-off waste.

Metal 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. Many insurance underwriters recognize this durability; check with your agent about premium reductions. Lewisville's climate data doesn't specify frequent severe hail, but the Class 4 rating protects you from rare events that would shred asphalt or wood. You'll have documentation proving impact resistance if a claim ever arises.

The Guardian warranty is a lifetime limited, non-prorated material warranty for the original owner—covering rusting, rotting, splitting, cracking, and curling. It's even transferable once, giving the next owner 50 years from completion. Combined with aluminum's inability to rust and a 30-year coating warranty (ASTM D4214/D2244 tested), you're looking at a roof that outlasts every asphalt roof in your neighborhood and most wood roofs too. This is the last major roof you'll likely install.

Aluminum contains no iron, so it cannot rust chemically. Instead, it forms a self-healing oxide layer that protects the metal beneath. If scratched or abraded, this layer reforms automatically—something steel cannot do. The Alunar 70% PVDF fluorocarbon coating is applied to both sides of every panel, adding a 30-year warranted shield. While Lewisville isn't coastal, the protection means decades of zero corrosion concerns even in wet, freezing conditions with occasional road salt drift.

Dramatically less. Aluminum doesn't split, curl, rot, or shed granules like asphalt. It doesn't absorb moisture like wood shakes, which breed moss and fungi in Lewisville's damp climate (2,163 mm rain, 11.4°C mean temperature). CALGreen verification confirms reduced maintenance burden. Occasional gutter cleaning and removal of debris is all you need. Asphalt requires annual inspections and tar-sealing; wood demands treatment and repair. Metal simply sheds water and lasts.

Yes. Aluminum is approximately 95% recyclable and enters a circular economy; old metal panels become aircraft, automotive parts, or new roofing. Asphalt shingles, by contrast, are torn off and landfilled—millions of tons yearly in North America. Over Lewisville's 2,764 annual sunshine hours and 22 freeze-thaw cycles, asphalt breaks down faster, requiring earlier replacement and more landfill trips. Choosing metal eliminates that cycle and keeps material in productive use for generations.

Interlock Metal Roofing (PNW) Inc. has served the region since 1997—over 25 years of Pacific Northwest installations. They understand Lewisville's snow load, wind gusts to 115 km/h, and heavy rainfall demands. The product itself is manufactured in Delta, BC, just 100+ km away, ensuring local expertise and supply. Current promotion: no payments and no interest until Spring 2027, or 10% off installation. Call for a free assessment of your home's suitability and timeline.