Metal Roofing in Preston, Washington — Lifetime Interlock® Aluminum Shingles Installed Locally
Preston 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 Preston's Heavy Rain, Snow Loads, Windstorms & Lifetime Protection
Interlock Metal Roofing (PNW) Inc. is Preston, 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 Preston’s wet winters, heavy snowfall, and moss-prone conditions, ensuring superior snow shedding and long-term protection. With energy-efficient cool roof technology, our systems help reduce heating and cooling costs year-round. 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, making us the premier choice for roof replacement and re-roofing in Preston, Washington.
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
- 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 panels coated with the Alunar® Coating System (no visible aluminum surface) for durable finish and corrosion resistance on Preston roofs
- Designed for King County’s wet, temperate foothills — resists prolonged moisture exposure common across Preston and nearby wooded lots
- Tested to 193+ km/h (120+ mph) structural wind uplift resistance to withstand regional windstorms that affect Preston properties
- Snow-shedding panel geometry reduces roof snow loads and helps prevent ice dams during Cascade foothills freeze–thaw cycles near Preston
- Durable seam design and robust mechanical attachment preserve watertight performance through atmospheric river events that deliver intense rainfall to Preston
- Weatherproof aluminum resists occasional marine aerosols and salt‑laden onshore flows that can reach Preston from Puget Sound corridors
- Smooth, non‑porous finish limits moss and lichen adherence in Preston’s damp, shaded microclimates—cutting routine cleaning and repairs
- Class A fire-rated available for enhanced ember resistance and improved performance during dry‑season fire risk in King County’s wildland‑urban interface
- UL 2218 Class 4 impact resistance reduces damage from hail, falling branches, and storm debris common in wooded Preston neighborhoods
- High reflectivity and cool‑roof characteristics lower attic temperatures and reduce heat gain during inland summer heat events
- Engineered to accept modern bracket‑mounted photovoltaic systems for efficient rooftop solar on Preston homes
- Fully recyclable aluminum supports sustainable replacement cycles and limits landfill waste for environmentally conscious Preston homeowners
- Low‑maintenance finish and corrosion protection extend service life compared with asphalt shingles in Preston’s high‑moisture conditions
- Backed by a Lifetime‑Limited transferable warranty when installed by authorized Interlock® contractors serving Preston and King County
Metal roofing built for Preston'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 Preston, Washington
Interlock® Aluminum Roofing — all-climates performance specs for Preston, 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 Preston, 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 Preston, WA
Interlock® has completed 1 metal roof in Preston, Washington between 2019, across 1 roof profile (Standing Seam). 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
- 1roof profile
- 2019years
Open Preston on the interactive project map →Browse all Interlock® projects in Washington →See more Interlock® projects →
What our customers are saying:
We had some previous knowledge about the Interlock Roofing system as our neighbor had one installed in 2001. It looks fantastic and has held up beautifully so the decision was fairly easy. We enjoyed having Paul Wright out to give us the low down on the product and is very personable as well. Even my shy pooch gave him much attention & Paul shared plenty of scratches. We were replacing a 20 plus year old roof on a 1935 home. The crew was amazing, it must of been the hottest week in May & they worked many long days the hot roof. We are getting so many compliments on the roof so we know we made the right choice by having this amazing Interlock roof installed! Not at this time Not at this time
Thanks so much for improving the appearance of our home. The difference from before to after is spectacular. It was also nice to have Interlock install gutters as we did not have them before. The job was done quickly (within a week), and the clean up was amazing!! Having had numerous problems with roofers in the past and not having much trust in roofers, It was a pleasure to work with you.
It would have been nice to know the pricing of the skylights up front. It was very confusing when we were discussing them because there was a lot of back and forth. My house looks beautiful. The job was complicated and they did a great job.
I don't know that there was anything that could have been done better. It looks beautiful. I have had dozens of compliments. Everything is functioning well during bad weather. I give the entire experience an A+! I have to also add, Jonathan, our sales representative was also very charming, lovely, and easy to work with. Lastly, there was a lovely woman from British Columbia in the office who was very nice. The entire experience was very nice!
I think Interlock Roofing should provide documentation for the energy efficient federal tax credit. Interlock Roofing does very professional work and happy with their work.
They were great salesman and we appreciate them coming out. We just realized that we did not want to spend that much right now and will wait a while.
I liked their presentation. They had samples and were very knowledgeable and prepared.
There was a delay in getting the skylights, which prevented the completion of the job. The crew could have done a better job of informing me about the delay, and when the job would be completed.
The crew could have improved a little bit by better communicating their schedule, but every time that we asked them, they certainly told us exactly what was going on because they had some weather complications which were not their fault.
They could come back out and fix the wood trim that they put up incorrectly. I would love for someone to contact me so they can come back out and resolve some issues that I have.
see above
I used them 10 years ago and I didn't have any problems but this situation is not good. They are not trying to fix the situation. The communication is one place they can improve by calling back their customers. I think they need to give a full disclosure of the products and the materials they used. I haven't been able to get a break down of the materials they used on my project. I just hope they really did my roof properly and didn't leave other pieces of rotten wood up on the roof covered up. I am hoping that the roof is done honorable and I am not having to contact them in 5 years with problems because they didn't put the roof up properly.
Nearby service areas in King County
Interlock® metal roofing is also installed in these communities near Preston:
Interlock Metal Roofing (PNW) Inc. also services nearby States
Beyond Preston, our team installs Interlock® metal roofing across:
