Metal Roofing in Summit, Washington — Lifetime Interlock® Aluminum Shingles Installed Locally
Summit 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 Summit's Heavy Rain, Snow Loads, Windstorms & Lifetime Protection
Interlock Metal Roofing (PNW) Inc. is Summit, Washington’s trusted local metal roofing contractor, proudly serving homeowners since 1997 with unmatched expertise and reliability. As the exclusive authorized installer of Interlock® lifetime aluminum roofing systems, we deliver premium roof replacement and re-roofing services tailored to Summit’s unique climate. Our heavy-gauge, fire-resistant, and energy-efficient cool roofs are engineered to withstand the Pacific Northwest’s heavy snowfall, rain, and wind, ensuring superior snow shedding and long-term protection for your home. Choose from the timeless beauty of slate, cedar shingles, shake, Mediterranean tile, or standing seam profiles—all with the proven strength and durability of metal. Every Interlock roof is protected by the advanced Alunar® Coating System and backed by a Lifetime Warranty, making it the best choice for Summit homeowners seeking performance, beauty, and peace of mind in every season.
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 ~1195 mm of rain a year
Freeze–Thaw Durable
Endures ~46 freeze–thaw days a year
- Coated aluminum with the Alunar® Coating System (no visible aluminum surface) resists corrosion and maintains finish in Summit’s persistently moist conditions
- Precision weatherproof seams (profiles: slate, cedar, shake, tile) and mechanical fastening (profile: standing seam) deliver long-term leak protection during wind-driven rain events
- Tested to 193+ km/h (120+ mph) for severe windstorms, providing reliable retention during Pierce County gust events
- Continuous interlocks reduce water ingress during atmospheric rivers that drive prolonged rainfall into the Summit area
- Snow-shedding panels and engineered load capacity limit snow buildup and reduce ice-dam formation during Summit’s freeze–thaw winters
- Durable coatings and UL 2218 Class 4 impact resistance protect against hail, falling branches, and storm debris common to wooded Pierce County lots
- Class A fire-rated available to address ember exposure and elevated wildfire-risk windows in nearby dry-season microclimates
- Cool-roof characteristics lower attic temperatures and reduce heat gain during occasional Pacific Northwest heat waves
- Low-slope tolerances and tight panel joints minimize moss and algae retention on Summit roofs, cutting routine maintenance needs
- Standing seam mechanical fastening offers a concealed-fastener option that reduces corrosion points and eases long-term serviceability
- Fully recyclable aluminum supports lifecycle sustainability goals for environmentally conscious Summit and Pierce County homeowners
- Solar-ready panel geometry and attachment points accommodate modern bracket-mounted photovoltaic systems without compromising weather performance
- Factory-controlled panel profiles replicate slate, cedar shake, and tile aesthetics while meeting local roof pitch and load requirements in Summit neighborhoods
- Engineered panel geometry and advanced waterproofing preserve weathertight performance through heavy rains, freeze–thaw cycling, and seasonal thermal expansion
Metal roofing built for Summit's climate
Averages (10-yr): ~1195 mm rain and 30 cm snow per year, ~2943 sunshine hours, mean 10.9°C, typical daily-max winds ~14 km/h with gusts to 98 km/h, and ~46 freeze–thaw days per year.
- 30 cmavg. snow / year
- 1195 mmavg. rain / year
- 46freeze–thaw days / year
- 98 km/hpeak wind gusts
- 2943 hrsannual sunshine
- 10.9°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 Summit, Washington
Interlock® Aluminum Roofing — all-climates performance specs for Summit, 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 Summit, 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 Summit, WA
Every marker is a real, anonymized Interlock® aluminum roof completed by an Interlock Installer. Explore verified Interlock® installations near Summit, 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 Summit on the interactive project map →Browse all Interlock® projects in Washington →See more Interlock® projects →
What our customers are saying:
We just wanted to let you know how thoroughly-pleased we are with our new Interlock Roof. It is absolutely beautiful and we have had a lot of people stopping as they walk or drive by to admire how nice it looks. Everything progressed on the job exactly as you had shared with us when we signed the contract. There were no surprises. From the beginning when we got the call to set up a start date, to the final clean up and retrieval of the waste bin everything was handled so professionally. Viktor and Alex were a dream to work with-so-pleasant and each day everything was left so tidy that it would have been hard for guests to tell that we were in the middle of a re-roofing job. We will highly recommend your product and doing business with such a professional and obviously well run company.
I cannot think of anything as everything from presentation to completion of the roofing project went smoothly! I do get compliments on my new roof from Interlock- the red color and the slate look get rave reviews! I do recommend Interlock to anyone I meet that gives a compliment or says they are considering a new roof.
In 2004 my wife and I decided to purchase the lifetime Interlock Roof. I was fifty at the time and had been called over to my Father In Laws house several times to clean out his gutters and clean off his roof with a pressure washer. I told my wife I did not want our kids to have to do that for us in our later years.
Interlock could have improved by being cleaner and by making sure they cleaned up all of the products before they left.
None Great job n negative comments
Initial communication with staff unreliable. I left messages that were never answered. Too many times the person I needed to speak with was out to lunch and at unusual hours of the day.
The salesperson could have elaborated further on things like the appearance of the piping and ventilation.The pictures he showed me depicting the front side of the house featured much less stuff sticking out than the finished product. The pictures gave me the impression that nothing would be sticking out, when this did not end up being the case.
The salesperson could have elaborated further on things like the appearance of the piping and ventilation. The pictures he showed me depicting the front side of the house featured much less stuff sticking out than the finished product. The pictures gave me the impression that nothing would be sticking out, when this did not end up being the case.
They were stellar! There is nothing I would change!
When we are ready to do our roof we will be calling. We needed a quote
They could have improved their communication.
I liked the quality of the product and it looked good just too expensive.
Nearby service areas in Pierce County
Interlock® metal roofing is also installed in these communities near Summit:
Interlock Metal Roofing (PNW) Inc. also services nearby States
Beyond Summit, our team installs Interlock® metal roofing across:
