Metal Roofing in Union Hill-Novelty Hill, Washington — Lifetime Interlock® Aluminum Shingles Installed Locally
Union Hill-Novelty Hill 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 Union Hill-Novelty Hill's Heavy Rain, Snow Loads, Windstorms & Lifetime Protection
Interlock Metal Roofing (PNW) Inc. is the trusted local metal roofing contractor and exclusive authorized installer of Interlock® Lifetime Aluminum Roofing Systems in Union Hill-Novelty Hill, Washington. Since 1997, we have provided homeowners with premium roof replacement and re-roofing services engineered for the unique Pacific Northwest climate. Our heavy-gauge, fire-resistant, and energy-efficient cool roofs are specifically designed to withstand Union Hill-Novelty Hill’s wet winters, heavy rainfall, and occasional snow, ensuring superior snow shedding and long-term protection. Choose from the timeless beauty of slate, cedar shingles, shake, Mediterranean tile, or standing seam profiles—all with the unmatched 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 lasting performance, curb appeal, and peace of mind for your Union Hill-Novelty Hill home.
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
- Authorized installer of Interlock® Lifetime Aluminum Roofing Systems serving homeowners in Union Hill‑Novelty Hill and the surrounding King County neighborhoods
- Coated with the Alunar® Coating System (no visible aluminum surface) for durable, color-stable finishes on local homes
- 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) to resist strong windstorms that can impact elevated sites around Union Hill‑Novelty Hill
- Provides advanced waterproof installation techniques to withstand atmospheric river events and prolonged heavy rainfall common in King County
- Helps shed snow and reduce buildup on steep pitches, limiting roof loads and ice-dam formation during Pacific Northwest freeze–thaw cycles
- Designed for rapid seasonal transitions and persistent moisture—aimed at Union Hill‑Novelty Hill roofs exposed to long, cool damp periods
- Class A fire-rated available for added peace of mind during dry summer months and ember-risk conditions in the region
- Meets UL 2218 Class 4 impact resistance standards for improved protection from hail, falling branches, and storm debris
- Reduces attic heat gain with energy-efficient cool-roof performance to improve summer comfort during occasional heat waves
- Compatible with modern bracket-mounted photovoltaic systems to support solar installations on Union Hill‑Novelty Hill homes
- Built from fully recyclable aluminum to support sustainable building practices in King County residential projects
- Architectural profiles replicate slate, cedar shake and tile while standing seam offers mechanical fastening for a clean, high-performance roofline
- Low-maintenance surface discourages moss adhesion common in shaded, moisture-prone yards around Union Hill‑Novelty Hill and simplifies periodic cleaning
- Backed by a Lifetime‑Limited transferable warranty to protect long-term resale value and homeowner investment
Metal roofing built for Union Hill-Novelty Hill'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 Union Hill-Novelty Hill, Washington
Interlock® Aluminum Roofing — all-climates performance specs for Union Hill-Novelty Hill, 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 Union Hill-Novelty Hill, 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 Union Hill-Novelty Hill, WA
Every marker is a real, anonymized Interlock® aluminum roof completed by an Interlock Installer. Explore verified Interlock® installations near Union Hill-Novelty Hill, 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 Union Hill-Novelty Hill on the interactive project map →Browse all Interlock® projects in Washington →See more Interlock® projects →
What our customers are saying:
I have already recommended them. Those guys were amazing. Peter, Victor, and the other installation guys were just unbelievable. It is a great company, and they did a great job with my roof. I get compliments all the time. It was a wonderful experience. They did a wonderful job on the house. It looks fantastic.
The installation was very high quality, and I am happy with the installation and the roof that was provided by Interlock. I am really happy with the service, quality, and workmanship. I would like to recognize Ross, Tony, and Roma for their exceptional service. I think they did everything they could; there is no area for improvement.
2nd time around with Interlock, first time for house and now a few years later for my garage. Quality of product and installation are excellent and it matches the house roof perfectly. Expensive but in Washington what would you rather have a roof that last a lifetime or a 30year shingle that’s done in 10? The PNW is hard on roofs don’t keep paying!
Hire a project manager to work with your customers I am very happy with the end result, but the lack of communication is a seriously concerning for a customer.
We are very happy!
Should have specified that chimney flashing had to be replaced, as was my understanding. Leaving flashing in place - Interlock assumed lifetime warranty for someone else's work. I am extremely happy with the roof look, finish and the design. Installation went well even though we are still working through some leak issues.
Better communicate when the scheduled installation date is going to happen. Interlock needs to be more upfront and honest about how the roof is sensitive to foot traffic. When people walk on the shingles they risk causing the shingles to bend permanently. This is a disadvantage that interlock should openly explain to prospective customers.
Interlock replaced our old shake roof, which was leaking. It was not more than 13 years old. In life you get what your pay for. I went on line and looked at the choices.
They are too expensive.
Was unimpressed with your company’s pricing structure and sales tactics. It did not build trust for my way fe and I to feel good about doing business with you.
Nearby service areas in King County
Interlock® metal roofing is also installed in these communities near Union Hill-Novelty Hill:
Interlock Metal Roofing (PNW) Inc. also services nearby States
Beyond Union Hill-Novelty Hill, our team installs Interlock® metal roofing across:
