Metal Roofing in Shaw Island, Washington — Lifetime Interlock® Aluminum Shingles Installed Locally
Shaw Island Metal Roofing Experts Installing Lifetime Interlock® Aluminum Shingles Since 1997
What do Interlock customers in Washington say?
Interlock has 734 published customer reviews from Washington, covering installations reviewed between 1999 and 2026. They average 4.7 out of 5, with 669 collected through independent GuildQuality surveys. Interlock® Slate is the most frequently installed system in the region, appearing in 287 of these projects. Across the surveys that scored individual categories, quality of materials rates highest at 4.9 out of 5.
Metal Roofing Built for Shaw Island's Heavy Rain, Snow Loads, Windstorms & Lifetime Protection
Interlock Metal Roofing (PNW) Inc. is Shaw Island’s trusted local metal roofing contractor, proudly serving homeowners since 1997 with industry-leading expertise and reliability. As the exclusive authorized installer of Interlock® Lifetime Aluminum Roofing Systems in Shaw Island, Washington, we understand the unique weather challenges of the Pacific Northwest—heavy rain, coastal winds, and winter snow. Our heavy-gauge, fire-resistant, and energy-efficient cool roofs are engineered to shed snow quickly, resist moss and algae, and withstand harsh storms, making them the ideal choice for Shaw Island’s climate. Choose from the timeless beauty of slate, cedar shingles, shake, Mediterranean tile, or standing seam profiles—all protected by the advanced Alunar® Coating System and backed by a true Lifetime Warranty. For roof replacement or re-roofing, trust Interlock Metal Roofing (PNW) Inc. to deliver unmatched performance, durability, and curb appeal for your Shaw Island home.
Performance you can measure (all climates)
Weather Resistant
Tested to 193+ km/h (120 mph) winds
Durable
Lifetime-Limited, transferable warranty
Energy Efficient
Reflective cool-roof lowers cooling costs
Rain & Moisture Proof
Repels ~1015 mm of rain a year
Corrosion Resistant
Aluminum does not develop iron rust
- Available through authorized Interlock® installers serving Shaw Island and San Juan County
- Aluminum panels coated with the Alunar® Coating System (no visible aluminum surface) for enhanced corrosion resistance and long-term finish retention
- Precision weatherproof seams (profiles: slate, cedar, shake, tile) and mechanical fastening (profile: standing seam) deliver long-term leak protection during wind-driven rain events
- Engineered and tested to resist severe coastal windstorms — certified performance to 120+ mph for uplift and pressure on exposed island roofs
- Corrosion-resistant construction formulated to withstand Shaw Island’s persistent salt spray and marine air, reducing pitting and coating deterioration
- Designed to shed heavy rainfall and withstand atmospheric-river driven downpours typical of the San Juan Islands, minimizing ponding and leak risk
- Smooth coated finish and tight seams discourage moss, lichen, and organic buildup common on damp Shaw Island roofs, simplifying cleaning and maintenance
- Standing-seam mechanical fastening reduces exposed fasteners and flashings around penetrations—critical for roofs on windward exposures
- Snow-shedding panel geometry lowers snow loads and helps prevent ice-dam formation during occasional freeze–thaw cycles in the islands
- Class A fire-rated available for added protection where seasonal drying or ember exposure is a consideration in San Juan County
- UL 2218 Class 4 impact resistance for protection from hail, falling branches, and wind-driven debris on coastal properties
- Cool-roof thermal performance reduces heat gain during summer warm spells and improves attic comfort in tightly built island cottages
- Engineered for bracket-mounted photovoltaic systems to support rooftop solar on Shaw Island homes without compromising watertightness
- Fully recyclable aluminum construction extends service life and reduces end-of-life material waste versus asphalt shingles
- Backed by a transferable Lifetime‑Limited warranty and documented test data to support resale value for Shaw Island properties
Metal roofing built for Shaw Island's climate
Averages (10-yr): ~1015 mm rain and 30 cm snow per year, ~3119 sunshine hours, mean 10.5°C, typical daily-max winds ~20 km/h with gusts to 111 km/h, and ~15 freeze–thaw days per year.
- 30 cmavg. snow / year
- 1015 mmavg. rain / year
- 15freeze–thaw days / year
- 111 km/hpeak wind gusts
- 3119 hrsannual sunshine
- 10.5°Cmean temperature
Roof performance depends on the selected profile, tested assembly, roof structure and installation details. Class A fire-rated assemblies are available. Confirm applicable ratings in the testing reports and review the limited warranty before selecting a system.
Interlock Metal Roofing (PNW) Inc.
- 5608 17th Ave NW suite 1574, Seattle, WA 98107, United States
- Phone 206-589-8423
- Local lines Bellevue 425-225-4805 · Bellingham 360-502-4018 · Tacoma 253-352-2725 · Stanwood 206-202-7814 · Vancouver 360-873-5878
- Sales & Marketing sales@washingtonmetalroofing.com
- Toll-Free 1-866-733-5811
- Customer Service pnwservice@interlockroofing.com
- www.WashingtonMetalRoofing.com
- License WA #INTERMR75406
- Serving Washington since 1997 — 28 years
Hours
- Monday9:00 AM – 5:00 PM
- Tuesday9:00 AM – 5:00 PM
- Wednesday9:00 AM – 5:00 PM
- Thursday9:00 AM – 5:00 PM
- Friday9:00 AM – 5:00 PM
- SaturdayBy appointment
- SundayBy appointment
Interlock Metal Roofing (PNW) Inc. – Washington is a trusted metal roofing contractor proudly serving homeowners and businesses throughout Washington State. With decades of experience in the roofing industry, Interlock has built a reputation for unmatched quality, reliability, and customer satisfaction. As a specialized installer of premium aluminum and standing seam metal roofs, Interlock is an exclusive authorized installer of top-tier roofing systems designed for performance, longevity, and weather resilience — specifically engineered for the Pacific Northwest climate. Founded on principles of craftsmanship and integrity, Interlock Metal Roofing (PNW) Inc. has completed thousands of roofing projects with precision and professionalism, earning the loyalty of customers from Seattle to Spokane. Our team is known for timely project delivery, transparent communication, and exceptional workmanship, backed by robust warranties and industry-leading materials. Interlock’s commitment to excellence has been recognized through local and regional industry awards for safety, quality, and customer service. We stand out for our rigorous training standards, OSHA-certified crews, and adherence to best practices in roofing performance and installation safety. Whether it’s a residential metal re-roof, commercial roof installation, or custom architectural metal roofing, Interlock Metal Roofing (PNW) Inc. brings trusted expertise, lasting product solutions, and an unwavering focus on client satisfaction. Homes and businesses throughout Washington choose Interlock as their go-to metal roofing specialist because we deliver durable, high-performance roofs that stand the test of time.
Recognition GuildQuality Guildmaster Award — verified customer satisfaction (GuildQuality)
Accredited BBB Accredited A+
Get a Free Metal Roof Estimate in Shaw Island, Washington
Interlock® Aluminum Roofing — all-climates performance specs for Shaw Island, Washington
| Spec / Rating | Climate / Risk Factor + What It Solves |
|---|---|
| Wind resistance: 120+ mph (193+ kph) | Extreme wind, hurricanes, storm uplift: full interlocking attachment helps prevent blow-offs, edge lifting, and panel loss in high-gust events. |
| Fire rating: Class A (with proper assembly) | Wildfire, embers, radiant heat, chimney sparks: non-combustible roof assembly provides the highest residential fire protection rating. |
| Hail resistance: UL 2218 Class 4 | Hail and impact debris: highest impact classification; resists cracking, splitting, and surface loss common with asphalt under hail strikes. |
| Snow & ice performance: interlocking, shedding profile | Heavy snow, freeze-thaw, ice dams: smooth aluminum sheds snow efficiently and the interlocking design helps block water intrusion when melt-refreeze cycles occur. (Final snow-load capacity depends on roof structure and local code.) |
| Corrosion resistance: aluminum (won’t rust) | Salt air, coastal humidity, wet climates: aluminum naturally resists rust and corrosion, reducing long-term failure risk in marine or high-moisture environments. |
| Heat / UV durability: baked-on coating system | High heat, intense sun, thermal cycling: coatings resist UV breakdown and temperature-swing fatigue, slowing fading and surface degradation. |
| Moss / algae resistance: smooth coated surface | Wet shade, organic growth: low-porosity metal surface gives moss/algae less to grip, reducing staining and maintenance. |
| Material: heavy-gauge aluminum roof profiles (Slate / Shake / Shingle / Tile / Standing Seam) | All-season structural stability: lightweight, dent-resistant metal system stays stable through large hot-cold swings and severe weather. |
| Expected lifespan: 50+ years | Long-term durability across climates: avoids re-roof cycles typical of shorter-life materials, even in high-stress environments. |
| Warranty: Lifetime-Limited, non-prorated + 50-year transferable | Lifetime protection + resale value: guarantees long-term material confidence and transfers to future owners. |
Available Profiles in Shaw Island, Washington:
Explore all Interlock® metal roofing systems, or see the Guardian lifetime warranty and independent testing reports.
Recent Interlock® roofs across Washington
Completed Interlock® metal roofs near Shaw Island, WA
Every marker is a real, anonymized Interlock® aluminum roof completed by an Interlock Installer. Explore verified Interlock® installations near Shaw Island, Washington, United States on the interactive project map and photo grid — filter by roof profile (Slate, Cedar Shingle, Shake, Mediterranean Tile, Standing Seam, Solid Copper), colour and year of completion.
Open Shaw Island on the interactive project map →Browse all Interlock® projects in Washington →See more Interlock® projects →
What our customers are saying:
Great experience...great quality product. Simply cannot afford it
Nearby service areas in San Juan County
Interlock® metal roofing is also installed in these communities near Shaw Island:
Interlock Metal Roofing (PNW) Inc. also services nearby States
Beyond Shaw Island, our team installs Interlock® metal roofing across:
