Metal Roofing in Kelso, Washington — Lifetime Interlock® Aluminum Shingles Installed Locally
Kelso 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 Kelso's Heavy Rain, Snow Loads, Windstorms & Lifetime Protection
Interlock Metal Roofing (PNW) Inc. is Kelso, 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, and energy-efficient cool roofs are engineered to withstand Kelso’s wet winters, heavy rainfall, 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 roofs combine classic style with the proven strength of metal. Every installation is protected by the advanced Alunar® Coating System and backed by a Lifetime Warranty, making Interlock the best choice for roof replacement and re-roofing in Kelso, WA.
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 ~1500 mm of rain a year
Corrosion Resistant
Aluminum does not develop iron rust
- 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 is coated with the Alunar® Coating System (no visible aluminum surface), providing a durable, corrosion-resistant finish suited to Kelso’s wet climate.
- Corrosion-resistant aluminum defends against salt-laden air carried inland during strong Pacific storms and occasional coastal influence affecting parts of Cowlitz County.
- Designed for atmospheric rivers and prolonged heavy rainfall common to southwest Washington, reducing roof infiltration risk in Kelso neighborhoods.
- Engineered and tested to 193+ km/h (120+ mph) for severe windstorms, giving Kelso homeowners measurable resistance to seasonal gust events.
- Advanced waterproof installation details minimize leak potential during extended wet periods and wind-driven rain typical across Cowlitz County.
- Snow-shedding metal panels reduce accumulation and help prevent ice dams during occasional freeze–thaw cycles in inland Columbia River Valley locations.
- Smooth Alunar® finish inhibits moss and organic buildup that thrive on damp roofs in Kelso’s shaded, tree-lined streets—cutting routine cleaning needs.
- Class A fire-rated available for added protection on properties in the wildland‑urban interface and forested areas of Cowlitz County.
- UL 2218 Class 4 impact resistance for protection from hail, falling branches, and storm debris during Pacific Northwest storm seasons.
- Energy-efficient cool-roof performance reduces heat gain during summer heat spells, improving attic comfort and lowering cooling load for Kelso homes.
- Solar-compatible system engineered for modern bracket-mounted photovoltaic installations common on residential roofs.
- Fully recyclable aluminum supports sustainability goals for environmentally conscious homeowners in Kelso and throughout Cowlitz County.
- Premium architectural profiles replicate slate, cedar shake, and tile while offering standing-seam mechanical fastening for contemporary curb appeal.
- Low-maintenance roofing solution built to outlast asphalt shingles in high‑moisture Pacific Northwest conditions, lowering lifecycle upkeep for Kelso properties.
- Backed by a lifetime-limited transferable warranty to protect long-term investment and resale value for homeowners in Kelso and Cowlitz County.
Metal roofing built for Kelso's climate
Averages (10-yr): ~1500 mm rain and 51 cm snow per year, ~2835 sunshine hours, mean 11.6°C, typical daily-max winds ~14 km/h with gusts to 103 km/h, and ~24 freeze–thaw days per year.
- 51 cmavg. snow / year
- 1500 mmavg. rain / year
- 24freeze–thaw days / year
- 103 km/hpeak wind gusts
- 2835 hrsannual sunshine
- 11.6°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 Kelso, Washington
Interlock® Aluminum Roofing — all-climates performance specs for Kelso, 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 Kelso, Washington:
Explore all Interlock® metal roofing systems, or see the Guardian lifetime warranty and independent testing reports.
Recent Interlock® roofs across Washington
5 completed Interlock® metal roofs in Kelso, WA
Interlock® has completed 5 metal roofs in Kelso, Washington between 2006–2022, across 3 roof profiles (Cedar Shingle, Slate, Shingle). Every marker is a real, anonymized installation completed by an Interlock Installer — explore them on the interactive map and photo grid below, filterable by profile, colour and year of completion.
- 5completed roofs
- 3roof profiles
- 2006–2022years
Open Kelso on the interactive project map →Browse all Interlock® projects in Washington →See more Interlock® projects →
What our customers are saying:
I had a fantastic experience with Interlock Metal Roofing! Their team was incredibly easy to work with and very responsive to all of my questions throughout the entire process. I want to give a special shout-out to our installers, Victor and Daniel. They were extremely professional, friendly, and did an amazing job installing our new roof. The new metal roof looks absolutely amazing! I highly recommend them to anyone looking for a high-quality roofing experience.
Professional and timely, installation was ahead schedule. A post (1-2 months) inspection done by non installers.
Needed to put this project on hold, due to other issues that have arisen. You will be the first people we call when we are ready to roof our home.
I had originally planned to use the product on a new building but needed an older house reroofed. Newer building has been put on hold for now.
COMMUNICATION!!Don't make appointments and then not show up, don't miss appointments and make customers call for days to find out why and when the new appointment will be just to not show up again. ANSWER the PHONE when people call, having customers sit without information is infuriating and just makes them unhappy from the start. So...Communication and customer service improvement would be great. We were very upset with the wasting of our vacation time...
Nearby service areas in Cowlitz County
Interlock® metal roofing is also installed in these communities near Kelso:
Interlock Metal Roofing (PNW) Inc. also services nearby States
Beyond Kelso, our team installs Interlock® metal roofing across:
