Metal Roofing in Custer, Washington — Lifetime Interlock® Aluminum Shingles Installed Locally
Custer 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 Custer's Heavy Rain, Snow Loads, Windstorms & Lifetime Protection
Interlock Metal Roofing (PNW) Inc. is Custer, 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 Custer’s wet winters, frequent rain, and occasional snow, providing superior snow-shedding and long-term protection against moss, leaks, and wind. With energy-efficient cool roof technology, our systems help keep your home comfortable year-round while reducing energy costs. Choose from the timeless elegance 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, ensuring peace of mind and lasting value for your Custer home.
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 ~1196 mm of rain a year
Corrosion Resistant
Aluminum does not develop iron rust
- Authorized Interlock® installer serving Custer and homeowners across Whatcom County
- Precision weatherproof seams (profiles: slate, cedar, shake, tile) and mechanical fastening (profile: standing seam) deliver long-term leak protection during wind-driven rain events
- The aluminum is Coated with the Alunar® Coating System (no visible aluminum surface) for extended coating life and improved corrosion resistance
- Wind-tested to 193+ km/h (120+ mph) to resist severe gusts that can accompany regional Pacific storm systems and ridge-driven winds near Custer
- High-snow-load capacity and snow-shedding panel geometry reduce accumulation and lower ice-dam risk on roofs exposed to Cascade winter storms
- Built to withstand frequent freeze–thaw cycles common to inland Whatcom County elevations, minimizing thermal fatigue and seam stress
- Designed for intense atmospheric-river events that deliver prolonged heavy rain to Custer and surrounding watersheds
- Alunar® coating and non-ferrous substrate resist intermittent coastal salt air and salt-laden spray carried inland during strong storm surges
- Low-adhesion painted finish reduces moss and lichen growth in Custer’s damp, shaded microclimates, cutting routine cleaning and remediation
- Class A fire-rated available for ember and wildland-urban interface mitigation during dry-season wildfire periods in Whatcom County
- UL 2218 Class 4 impact resistance to protect against hail, falling branches, and storm debris typical of local windstorms
- Cool-roof reflective performance helps lower attic temperatures and peak cooling loads during inland heat waves
- Solar-compatible substrate and low-profile mounting options simplify attachment of bracket-mounted PV systems without compromising roof integrity
- Durable, fully recyclable aluminum construction offers a long service life and reduced lifecycle environmental impact for Custer homeowners
- Low-maintenance finish and interlock system outlast asphalt shingles in Custer’s high-moisture, variable-temperature climate
- Backed by a Lifetime-Limited transferable warranty to support long-term asset protection and resale value in the local market
Metal roofing built for Custer's climate
Averages (10-yr): ~1196 mm rain and 35 cm snow per year, ~3005 sunshine hours, mean 10.3°C, typical daily-max winds ~20 km/h with gusts to 117 km/h, and ~34 freeze–thaw days per year.
- 35 cmavg. snow / year
- 1196 mmavg. rain / year
- 34freeze–thaw days / year
- 117 km/hpeak wind gusts
- 3005 hrsannual sunshine
- 10.3°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 Custer, Washington
Interlock® Aluminum Roofing — all-climates performance specs for Custer, 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 Custer, Washington:
Explore all Interlock® metal roofing systems, or see the Guardian lifetime warranty and independent testing reports.
Recent Interlock® roofs across Washington
1 completed Interlock® metal roofs in Custer, WA
Interlock® has completed 1 metal roof in Custer, Washington between 2011. 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.
- 1completed roofs
- 2011years
Open Custer on the interactive project map →Browse all Interlock® projects in Washington →See more Interlock® projects →
What our customers are saying:
They did great. Overall, I'm very happy with the experience. They were fast and professional. They knocked it out of the park.
They did great on everything.
Interlock Roofing could improve on their communication. We didn't know they were going to start on our project until they pulled up to start the job. We are happy with the product. It took three days for them to do our roof.
Quality control during installation could have been improved. It was expensive.
We didn't know exactly what they were doing. It would have been nice to be told each process. I put in a service call yesterday.
The only thing that they could have done better is to have brought their sign back. They have not returned the sign.
Weather in Northwestern Washington impacted the schedule by about 1 month, but that’s the weather we get
This is a special case project on which the first crew sent by Interlock was deficient. The folks from the factory stepped in and corrected the problems in full. I am pretty satisfied after a very rocky start.
Nearby service areas in Whatcom County
Interlock® metal roofing is also installed in these communities near Custer:
Interlock Metal Roofing (PNW) Inc. also services nearby States
Beyond Custer, our team installs Interlock® metal roofing across:
