Projects ↗Let’s talk roofing ↗Search
Interlock RoofingA better roof starts with a little exploration.
Contemporary home with Interlock roofing
Made to belong.
Built to endure.
See it on a home ↗
THE INTERLOCK COLLECTION

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

Lopez 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 Lopez's Heavy Rain, Snow Loads, Windstorms & Lifetime Protection

Interlock Metal Roofing (PNW) Inc. is Lopez, Washington’s trusted local metal roofing contractor, proudly serving homeowners since 1997. As the exclusive authorized installer of Interlock® lifetime aluminum roofing systems, we deliver unmatched performance, beauty, and durability tailored for the unique Pacific Northwest climate. Our heavy-gauge, fire-resistant, and energy-efficient cool roofs are engineered to withstand Lopez’s coastal rains, high winds, and occasional snow, ensuring superior snow shedding and long-term protection. Whether you prefer the timeless look of slate, cedar shingles, shake, Mediterranean tile, or standing seam, our metal roofs offer the classic styles you love with the strength only metal can provide. Every Interlock roof is protected by the advanced Alunar® Coating System and backed by a Lifetime Warranty, making us the top choice for roof replacement and re-roofing in Lopez, Washington. Choose Interlock Metal Roofing for peace of mind and lasting beauty, no matter the weather.

Interlock metal roofing styles including slate, cedar, shake, tile, and standing seam in Lopez, Washington

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

Impact Resistant

UL 2218 Class 4 — top hail rating

Corrosion Resistant

Aluminum does not develop iron rust

  • Authorized Interlock® installer serving Lopez Island and San Juan County homeowners
  • Interlocking panel system tested to 193+ km/h (120+ mph) to withstand severe coastal windstorms and gusts that impact Lopez shorelines
  • Precision weatherproof seams (profiles: slate, cedar, shake, tile) and mechanical fastening (profile: standing seam) deliver long-term leak protection during wind-driven rain events
  • Aluminum panels finished with the Alunar® Coating System (no visible aluminum surface) for durable color retention and enhanced corrosion control
  • Corrosion-resistant construction engineered for prolonged salt-air exposure near Lopez’s marine shorelines
  • Designed to shed heavy rainfall efficiently, reducing ponding and prolonging underlayment life in Lopez’s wet seasons
  • Snow-shedding profile reduces buildup and helps prevent ice dams during the occasional freeze–thaw and light snow events on Lopez
  • Class A fire-rated available for homeowners seeking elevated ember resistance and fire performance on San Juan County properties
  • UL 2218 Class 4 impact resistance to protect against hail, falling branches from island winds, and storm debris
  • Energy-efficient cool-roof performance limits heat gain during Pacific Northwest heat waves and improves attic comfort on Lopez residences
  • Solar-compatible roof surface and attachment design engineered for modern bracket-mounted photovoltaic arrays in Lopez installations
  • Fully recyclable aluminum construction supports long-term sustainability goals for environmentally conscious Lopez homeowners
  • Low-maintenance finish and interlocking design reduce routine upkeep compared with asphalt shingles in Lopez’s high-moisture coastal environment
  • Backed by a Lifetime-Limited transferable warranty to protect property value and provide long-term assurance for Lopez buyers
  • Targeted moss-management surface characteristics help inhibit moss and biologic growth common to Lopez’s damp, shaded roofs

Metal roofing built for Lopez'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.

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+

Part of the Interlock® installer network →

Get a Free Metal Roof Estimate in Lopez, Washington

No obligation to purchase. Takes about 30 seconds.

Interlock® Aluminum Roofing — all-climates performance specs for Lopez, Washington

Spec / RatingClimate / 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 4Hail and impact debris: highest impact classification; resists cracking, splitting, and surface loss common with asphalt under hail strikes.
Snow & ice performance: interlocking, shedding profileHeavy 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 systemHigh heat, intense sun, thermal cycling: coatings resist UV breakdown and temperature-swing fatigue, slowing fading and surface degradation.
Moss / algae resistance: smooth coated surfaceWet 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+ yearsLong-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 transferableLifetime protection + resale value: guarantees long-term material confidence and transfers to future owners.

Available Profiles in Lopez, Washington:

Explore all Interlock® metal roofing systems, or see the Guardian lifetime warranty and independent testing reports.

Completed Interlock® metal roofs near Lopez, WA

Every marker is a real, anonymized Interlock® aluminum roof completed by an Interlock Installer. Explore verified Interlock® installations near Lopez, 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.

4.7 / 5 — from 734 verified customer reviews in Washington

What our customers are saying:

★★★★★
Review: March 12, 2019

Great experience...great quality product. Simply cannot afford it

Read all Washington metal roofing reviews →

Nearby service areas in San Juan County

Interlock® metal roofing is also installed in these communities near Lopez:

Interlock Metal Roofing (PNW) Inc. also services nearby States

Beyond Lopez, our team installs Interlock® metal roofing across:

Last updated:

Interlock metal roofing — get a free quote