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

Metal roofing sheds snow and ice far more effectively than asphalt because its smooth, hard surface prevents ice dams from forming—critical in Bedford's climate of about 49 cm of annual snow and 34 freeze-thaw days per year. Four-way interlocking Interlock panels remain structurally sound under snow load because the aluminum weighs only 0.41 to 0.59 lb/sq ft, versus 900+ lb/sq ft for slate or tile, so no structural reinforcement is required. Snow slides cleanly rather than pooling, and the warranty covers wind speeds up to 120 mph, protecting against the 103 km/h gusts your area experiences.

Aluminum cannot rust because it contains no iron—it forms a thin, self-healing oxide layer that re-seals itself when scratched, making it chemically inert in Bedford's 1578 mm annual rainfall and damp Pacific County air. The Alunar 70% PVDF fluorocarbon coating (applied to both sides) is warranted for 30 years against chalking and fading per ASTM D4214 standards, adding a second barrier. Steel roofs, by contrast, require paint and sealant maintenance to prevent rust spread. Over 27 years in coastal and wet North American climates, Interlock panels have demonstrated zero corrosion failures.

The four-way interlocking system—each panel locks to its neighbors on top, bottom, and both sides—creates a continuous, sealed surface that directs water down and off the roof plane. Bedford receives about 1578 mm of rain annually; the panel overlap and crimp design eliminate reliance on sealants that degrade over time. Installation over solid decking with ice-and-water underlayment provides the same leak protection as asphalt, but without the shingle-by-shingle vulnerability to wind and ice that opens seams. The ICC-ES ESR-1790 evaluation confirms water drainage compliance with IRC standards.

Interlock metal roofing carries a UL 2218 Class 4 impact rating—the highest available—and the warranty even covers perforation from hailstones up to 1.5 inches. Class 4 rating often qualifies homeowners for insurance discounts because the aluminum's hardness resists denting and puncture that would compromise asphalt or wood shakes. Your local agent should request the ICC-ES ESR-1790 certification and UL listing (33876) when reviewing your policy; many carriers reduce premiums by 10–20% for non-combustible, impact-resistant roofing. In Pacific County's severe weather environment, this coverage adds real financial protection.

Yes. The four-way interlocking aluminum panels are warranted to resist wind speeds up to 120 mph (193 km/h) when installed to specification—far exceeding Bedford's typical gusts of about 103 km/h. Each panel locks mechanically to the next, distributing wind load across the entire roof plane rather than relying on fastener strength alone. Steel roofing achieves similar wind resistance but requires corrosion maintenance; aluminum does not. Installation over solid decking, performed by Interlock Metal Roofing (PNW) Inc. since 1997, ensures the system's wind warranty applies.

Yes. Interlock's Mediterranean Tile profile weighs only 0.59 lb/sq ft—about 96% lighter than concrete or clay tile—so no structural reinforcement is needed. Concrete tile runs 900+ lb/sq ft; aluminum tile installs directly over existing asphalt in most cases, saving the labor and cost of tearing off old shingles and strengthening roof framing. This lightweight advantage is especially valuable in Bedford, where the roof carries about 49 cm of annual snow plus ice load during the 34 freeze-thaw days per year. The reduction in total load improves structural longevity and simplifies installation timelines.

The Guardian Warranty is a lifetime limited, non-prorated material warranty for the original owner, covering rusting, rotting, splitting, cracking, curling, and loss of impact resistance—claims rare or absent with aluminum's 0.84 emissivity and sealed construction. The warranty transfers once to the next owner with 50 years remaining from completion, adding resale value. Combined with the Alunar 70% PVDF coating's 30-year fade guarantee, Interlock panels installed today will outlast three generations of asphalt shingles. In Bedford's 1578 mm-per-year rainfall and 34 annual freeze-thaw cycles, durability matters; this warranty eliminates repair guessing.

Metal roofing costs more upfront than asphalt but is your last roof—eliminating the cycle of tear-off, landfill, and reinstall every 15–20 years. Over 50 years in Bedford's high-moisture climate of 1578 mm rain and 49 cm snow, metal roofing avoids multiple asphalt replacements, maintenance for rust-prone fasteners, and rising labor costs. The Guardian Warranty's lifetime coverage and one-time transferability add resale appeal. Current financing: no payments and no interest until Spring 2027, or 10% off installation. Aluminum's recyclability (~95%) also eliminates environmental disposal costs that homeowners eventually absorb.

Interlock aluminum roofing is non-combustible and available with Class A fire rating (the highest), improving compliance with Washington State energy code and ICC-ES ESR-1790 standards. Non-combustible construction qualifies for Class A fire insurance discounts in many counties. Unlike wood shake or asphalt shingles, aluminum cannot ignite or spread flames, a significant safety advantage in Pacific County. The Class A rating is already verified through ICC-ES evaluation and Intertek certification (33876), eliminating code review delays. Many homeowners paired fire rating with wind and hail resistance to simplify underwriting and lower premiums by 15–25%.

Metal roofing requires almost no maintenance. Unlike asphalt shingles, which require annual moss removal, algae treatment, and sealing of wind-damaged edges in Bedford's 2757 hours of annual sunshine and 1578 mm rain, aluminum simply sheds debris. Wood shakes demand frequent inspection and fungicide application in high-moisture climates. Interlock panels' sealed four-way interlocking design eliminates fastener inspection, re-nailing, and sealant maintenance that consume time and money. The Alunar 70% PVDF coating (30-year warranty) resists chalking and fading without repainting. Over a 50-year lifespan, this translates to zero major repairs—asphalt requires at least three full replacements in the same period.

Yes. Bedford averages about 49 cm of snow, 1578 mm of rain, roughly 34 freeze–thaw days a year, with peak wind gusts near 103 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.