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

Metal roofing sheds snow effectively due to its smooth, interlocked surface and low friction — a key advantage in Thurston County's ~40 cm annual snowfall and 34 freeze-thaw cycles per year. Interlock's four-way interlocking panels create a unified plane that prevents ice dams from forming where traditional roofs leak. Snow guards are optional and depend on roof pitch and proximity to below; our local installer, Interlock Metal Roofing (PNW) Inc., assesses your home's layout during the site visit and recommends them only where needed for safety.

Interlock's four-way interlocking aluminum panels overlap continuously, directing water downslope without pooling or seeping at panel edges — a proven design tested across coastal and alpine environments since 1998. The ICC-ES ESR-1790 evaluation confirms compliance with IBC/IRC water-intrusion standards. Your region's ~1370 mm yearly rainfall and gusts to 99 km/h are precisely the conditions our panels are engineered for: the interlocks clamp tighter under wind pressure, and the slope naturally accelerates drainage. Proper installation over a solid deck with underlayment adds a secondary barrier.

Aluminum contains no iron, so it cannot rust — it forms a transparent oxide layer that self-heals when scratched, naturally protecting the metal underneath. Interlock's roofing-grade 3105-H24 and 3003-H24 aluminum alloy (ASTM B209) is paired with a Alunar 70% PVDF fluorocarbon finish applied to both sides, warranted 30 years against chalking and fading. In Bordeaux's wet climate with 40 cm annual snow and frequent thaw cycles, this dual-layer protection eliminates the rust vulnerability that plagues steel. The result: no oxidation staining, no structural degradation from corrosion.

Interlock's energy-efficient colors reflect solar heat rather than absorb it — your cooling load drops measurably in summer and spring, especially on the ~2881 sunshine hours Bordeaux receives annually. The Aged Copper Penny profile achieves initial solar reflectance up to 0.55 and thermal emissivity of 0.84, meaning it bounces heat that asphalt roofing absorbs and re-radiates into your attic. The Cool Roof Rating Council verification confirms real energy savings. Over a 50-year roof life, this translates to hundreds of dollars in avoided air-conditioning costs, making Interlock a counter-intuitive choice even in cloudy Pacific Northwest climates.

Yes — Interlock's four-way interlocking panels are warranted to resist wind speeds up to 120 mph (193 km/h), well above Bordeaux's typical gust maxima of 99 km/h. The interlocking design creates mechanical redundancy: each panel clasps its neighbors on all four sides, so a single gust cannot lift or separate individual shingles. UL 2218 Class 4 impact rating (the highest available) further confirms the panel's structural integrity. Our local installer verifies proper fastening per specification; when installed correctly, your roof will outperform asphalt in any storm your region generates.

Interlock's Mediterranean Tile profile installs at only ~0.59 lb/sq ft — approximately 96% lighter than genuine concrete or clay tile — so no structural reinforcement is needed. Existing roof framing designed for asphalt shingles easily carries aluminum. The Slate profile weighs just ~0.41 lb/sq ft and can install directly over most existing roofs, saving thousands on tear-off labor. This is a major advantage in retrofit jobs: you avoid construction delays, dust, and disposal costs. The light weight also means faster installation and lower strain on fascia, gutters, and flashing.

Interlock's 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 — no time-based degradation schedule. The warranty is one-time transferable, giving the next owner 50 years of coverage from completion, a major incentive at resale. Combined with aluminum's inherent corrosion immunity in Bordeaux's ~34 annual freeze-thaw cycles, you're looking at a roof that outlasts two or three asphalt replacements. This is the last roof you buy.

Interlock manufactures five profiles: Slate, Cedar Shingle, Shake, Standing Seam, and Mediterranean Tile — each engineered to replicate traditional materials in lightweight aluminum. The Slate suits modern farmhouse and colonial homes; Cedar Shingle and Shake complement craftsman and cottage aesthetics; Standing Seam works for contemporary and industrial designs; Tile suits Mediterranean, Spanish, and formal colonial. Your choice depends on your home's existing architecture and personal preference. Our local installer, Interlock Metal Roofing (PNW) Inc., can show samples and discuss which profile aligns with your neighborhood and long-term vision.

Interlock requires minimal maintenance: rinse debris twice yearly and inspect fasteners annually — that's it. No moss treatment, no algae remover, no wood-preservative spraying like cedar or shake demand. No tar-patching or shingle replacement like asphalt. Aluminum's oxide layer self-heals minor scratches, so a hailstone impact that would split wood or crack asphalt leaves aluminum uncompromised. Bordeaux's 1370 mm annual rainfall naturally flushes dust and pollen. The Alunar coating is warranted 30 years against chalking and fading, so color stays true. Over 50 years, you save thousands in maintenance labor and materials.

Interlock aluminum is approximately 95% recyclable at end of life, so your roof never becomes landfill — a sharp contrast to asphalt shingles, which typically end up in dumps. Manufacturing aluminum does consume energy, but recycling aluminum uses just 5% of that energy, creating a powerful incentive to recycle. Because Interlock's durability (50+ years) far exceeds asphalt's (15-20 years), you avoid the tear-off-to-landfill cycle altogether: fewer roofs replaced means fewer environmental impacts. In Bordeaux's climate, this longevity translates directly to sustainability, making metal roofing one of the most eco-conscious choices available.

Yes. Bordeaux averages about 40 cm of snow, 1370 mm of rain, roughly 34 freeze–thaw days a year, with peak wind gusts near 99 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.