Metal Roofing in Cumberland, Washington — Lifetime Interlock® Aluminum Shingles Installed Locally
Cumberland 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 Cumberland's Heavy Rain, Snow Loads, Windstorms & Lifetime Protection
Interlock Metal Roofing (PNW) Inc. is Cumberland, 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 Pacific Northwest’s unique climate. Our heavy-gauge, fire-resistant roofs are engineered to withstand Cumberland’s wet winters, heavy snowfall, and seasonal storms, providing superior snow shedding and long-term protection. With energy-efficient cool roof technology, our systems help reduce energy costs year-round. Choose from slate, cedar shingles, shake, Mediterranean tile, or standing seam profiles—all protected by the advanced Alunar® Coating System and backed by a Lifetime Warranty. For roof replacement or re-roofing in Cumberland, trust Interlock Metal Roofing (PNW) Inc. for a roof that’s built to last and designed for the Pacific Northwest.
Performance you can measure (all climates)
Weather Resistant
Tested to 193+ km/h (120 mph) winds
Durable
Lifetime-Limited, transferable warranty
Rain & Moisture Proof
Repels ~1761 mm of rain a year
Energy Efficient
Reflective cool-roof lowers cooling costs
Snow-Shedding
Built for ~194 cm of snow a year
Freeze–Thaw Durable
Endures ~58 freeze–thaw days a year
- Available through authorized Interlock installers serving Cumberland and King County, with local installation practices tuned to Cascade‑foothills sites
- Aluminum panels coated with the Alunar® Coating System (no visible aluminum surface) for durable color retention in Cumberland’s damp, shaded conditions
- Interlocking panel system tested to 193+ km/h (120+ mph) to withstand severe gusts and windstorms that impact King County ridge and plateau exposures
- Precision weatherproof seams (profiles: slate, cedar, shake, tile) and mechanical fastening (profile: standing seam) deliver long-term leak protection during wind-driven rain events
- Snow‑shedding panel geometry reduces heavy‑snow accumulation and lowers ice‑dam risk for Cumberland roofs during seasonal freeze–thaw cycles
- Corrosion‑resistant finish and alloy selection protect roof assemblies where Puget Sound onshore flow can carry salt into parts of King County
- Class A fire-rated available and detailed for ember resistance to help protect Cumberland homes near forested slopes and seasonal brush‑fire risk areas
- UL 2218 Class 4 impact resistance for improved tolerance to hail, falling branches from local timbered lots, and storm debris
- Engineered seams and fasteners maintain watertight performance through atmospheric‑river driven deluges that periodically flood King County lowlands
- Cool‑roof performance reduces summer heat gain and improves attic comfort during Pacific Northwest heat spells affecting Cumberland residences
- Solar‑compatible roof geometry and mounting provisions for bracket‑mounted photovoltaic systems commonly used across King County
- Fully recyclable aluminum construction supports sustainability objectives for Cumberland homeowners concerned with local watersheds and forests
- Low maintenance finish and panel design resist moss and organic buildup common on shaded, tree‑canopied roofs in Cumberland, reducing cleaning frequency versus asphalt
- Mechanically fastened standing‑seam profiles provide tested wind uplift resistance on exposed ridgelines and backroads around Cumberland
- Corrosion‑proof aluminum construction combined with the Alunar® system helps prevent long‑term moisture and oxidation issues in King County’s wet winters
- Backed by a Lifetime‑Limited transferable warranty to provide measurable long‑term protection and resale confidence for Cumberland homeowners
Metal roofing built for Cumberland's climate
Averages (10-yr): ~1761 mm rain and 194 cm snow per year, ~2743 sunshine hours, mean 9.8°C, typical daily-max winds ~11 km/h with gusts to 128 km/h, and ~58 freeze–thaw days per year.
- 194 cmavg. snow / year
- 1761 mmavg. rain / year
- 58freeze–thaw days / year
- 128 km/hpeak wind gusts
- 2743 hrsannual sunshine
- 9.8°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 Cumberland, Washington
Interlock® Aluminum Roofing — all-climates performance specs for Cumberland, 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 Cumberland, 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 Cumberland, WA
Every marker is a real, anonymized Interlock® aluminum roof completed by an Interlock Installer. Explore verified Interlock® installations near Cumberland, 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 Cumberland on the interactive project map →Browse all Interlock® projects in Washington →See more Interlock® projects →
What our customers are saying:
We have already recommended them. We put Ross in touch with our contractor for our contractor's other clients. We really had a great experience and everything went smoothly. The coordination of the project went really well and it was very smooth.
Interlock Roofing-Seattle provided professional service and the people are easy to work with. If there are any issues on your side, they'll take care of it, and also answer your questions. It is a little difficult to interface with the Ukrainian workers, but it worked out using a translation app to communicate. They'll get better as they go, so it's not an issue; everybody needs to work! They have great workers and there were no problems. For composition type roofing, they do need a better magnet to pick up the nails. They could have improved the communication and clean-up pertaining to picking up nails. It was a great experience! They have great crews!
I would say that the price is the only thing, even my rich friends are worried about the cost. I would say the price is the only thing. I got it becasue I wanted it not because it was cheap. Thanks for the efficient installation and the skylight is very impressive.
None
More care during the tear-off process.
I would like to go with them, but I haven't yet because of different things I found on the internet regarding the warranty and how other people's reviews state that the roofs leak and the company doesn't follow through with replacing the roof.
We had ordered an opening skylight, when it came it did not fit. The roofers put in a non opening one and said they would try to find one that fit. To this date we have not heard from them, or the company regarding that skylight. It seems there should be a refund of the difference in the price between the non-opening one and the opening one. I am happy with the roof, I just want either a skylight that opens or a refund of the difference in the price.
We had ordered an opening skylight, when it came it did not fit.
There were two salesman. I interfaced with both of them and it can apply to both of them.
Nearby service areas in King County
Interlock® metal roofing is also installed in these communities near Cumberland:
Interlock Metal Roofing (PNW) Inc. also services nearby States
Beyond Cumberland, our team installs Interlock® metal roofing across:
