Metal Roofing in Underwood, Washington — Lifetime Interlock® Aluminum Shingles Installed Locally
Underwood 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 Underwood's Heavy Rain, Snow Loads, Windstorms & Lifetime Protection
Interlock Metal Roofing (PNW) Inc. is the trusted local metal roofing contractor serving homeowners in Underwood, Washington since 1997. As the exclusive authorized installer of Interlock® lifetime aluminum roofing systems, we deliver unmatched performance, beauty, and durability tailored for the unique climate of the Columbia River Gorge. Our heavy-gauge, fire-resistant roofs are engineered to withstand Underwood’s wet winters, heavy snowfall, and high winds, ensuring superior snow shedding and long-term protection. With energy-efficient cool roof technology, our systems help keep homes comfortable year-round while reducing energy costs. Choose from the timeless look of slate, cedar shingles, shake, Mediterranean tile, or standing seam — all with the strength of metal and the advanced Alunar® Coating System for maximum weather resistance. Every Interlock roof is backed by a Lifetime Warranty, making us the top choice for roof replacement and re-roofing in Underwood, 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
Snow-Shedding
Built for ~193 cm of snow a year
Rain & Moisture Proof
Repels ~1056 mm of rain a year
Freeze–Thaw Durable
Endures ~55 freeze–thaw days a year
- Precision weatherproof seams (profiles: slate, cedar, shake, tile) and mechanical fastening (profile: standing seam) deliver long-term leak protection during wind-driven rain events common to Underwood’s wet seasons.
- Aluminum panels coated with the Alunar® Coating System (no visible aluminum surface) provide a durable, low-gloss finish that resists corrosion and staining on Underwood roofs.
- Interlocking panel system tested to 193+ km/h (120+ mph) for severe windstorms, sized to withstand gusts that pass through the Columbia River Gorge and impact Underwood properties.
- Advanced waterproof installation method provides continuous protection against prolonged rainfall and wind-driven rain during Pacific Northwest atmospheric river events in the Underwood area.
- Corrosion-resistant formulation defends homes near the Columbia River Gorge from periodic marine-influenced salt spray and salt-laden winds that reach inland toward Underwood.
- Snow-shedding metal panels reduce snow accumulation and limit ice-dam formation during Skamania County’s occasional heavy snow and freeze–thaw cycles.
- Designed to tolerate rapid seasonal transitions—heavy autumn/winter precipitation, spring thaw, and summer heat—maintaining dimensional stability on Underwood roofs.
- Class A fire-rated available for added resilience during dry-season ember exposure and wildfire-risk periods across Skamania County.
- UL 2218 Class 4 impact resistance helps protect against hail, falling limbs, and storm debris in Underwood’s forested and wind-exposed settings.
- Energy-efficient cool-roof properties lower summer heat gain and improve attic comfort during regional heat waves while reducing cooling loads.
- Solar-compatible panel geometry and fastening accommodate modern bracket-mounted photovoltaic systems for Underwood homeowners planning rooftop solar.
- Sustainable, fully recyclable aluminum construction supports environmentally conscious building practices in Skamania County without sacrifi cing performance.
- Premium architectural profiles replicate slate, cedar shake, and tile for authentic curb appeal tailored to Underwood’s residential styles.
- Low-maintenance surface finish resists moss and algae growth common in Underwood’s damp, shaded environments, reducing cleaning and upkeep.
- Backed by a Lifetime-Limited transferable warranty to protect long-term investment and support resale value for homeowners in Underwood.
Metal roofing built for Underwood's climate
Averages (10-yr): ~1056 mm rain and 193 cm snow per year, ~3181 sunshine hours, mean 10.8°C, typical daily-max winds ~13 km/h with gusts to 110 km/h, and ~55 freeze–thaw days per year.
- 193 cmavg. snow / year
- 1056 mmavg. rain / year
- 55freeze–thaw days / year
- 110 km/hpeak wind gusts
- 3181 hrsannual sunshine
- 10.8°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 Underwood, Washington
Interlock® Aluminum Roofing — all-climates performance specs for Underwood, 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 Underwood, 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 Underwood, WA
Every marker is a real, anonymized Interlock® aluminum roof completed by an Interlock Installer. Explore verified Interlock® installations near Underwood, 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 Underwood on the interactive project map →Browse all Interlock® projects in Washington →See more Interlock® projects →
What our customers are saying:
I didn't get as many updates about scheduling as I would have liked. I had to call several times to get projected dates over the course of several months. We are very happy with the finished roof. The crew did a very neat and professional job, with careful attention to detail. We love the color.
I had full length venting at the peak of my roof, not the typical multiple roof vents scattered about. After install I asked if the top cap put on was adequate for the same type venting that it replaced. A man called and explained it was vented at the peak and I would be able to see this from inside the attic, which is not easy to access on my roof. Anyway, I'll trust your company that my roof is properly vented per building codes, but you might consider some type of "show and tell" to other customers with peak vented roofs like mine to assure them "visually" that the Interlock peak shingles do in fact vent adequately/per code requirements. -Rocky Cowart We've had several slow vehicle drive bys of people looking at our new roof. I'd be very surprised if you haven't received calls from some of them as your "high vis" advertisement sign is also hard to miss.... :-)
They could improve on timing relating to weather.
Since weather was an issue, it would have been nice if the office staff would have called instead of emailed when there were changes. The only frustration my husband and I had was not knowing who to contact for our job. In the emails sent to the customers it should include the project formans name, and contact number. Also, it should include a start time or encourage the owner to call the project Forman to clarify a start time. I am so happy that we made the choice to install an interlock roof, thank you for the best product we could invest in.
Nearby service areas in Skamania County
Interlock® metal roofing is also installed in these communities near Underwood:
Interlock Metal Roofing (PNW) Inc. also services nearby States
Beyond Underwood, our team installs Interlock® metal roofing across:
