Metal Roofing in Sherwood, Washington — Lifetime Interlock® Aluminum Shingles Installed Locally
Sherwood Metal Roofing Experts Installing Lifetime Interlock® Aluminum Shingles Since 1997
What do Interlock customers in Washington say?
Interlock has 732 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 285 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 Sherwood's Heavy Rain, Snow Loads, Windstorms & Lifetime Protection
Interlock Metal Roofing (PNW) Inc. is Sherwood, 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 Sherwood’s wet winters, heavy rains, 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 modern standing seam — all protected by the advanced Alunar® Coating System and backed by a Lifetime Warranty. For roof replacement or re-roofing in Sherwood, trust Interlock Metal Roofing (PNW) Inc. for a roof that’s as beautiful as it is resilient.
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 ~1208 mm of rain a year
Impact Resistant
UL 2218 Class 4 — top hail rating
Corrosion Resistant
Aluminum won’t rust or corrode
- Authorized installer of Interlock® Lifetime Aluminum Roofing Systems serving Sherwood homeowners and Mason County properties
- Aluminum panels coated with the Alunar® Coating System (no visible aluminum surface) for long-term corrosion resistance and consistent finish
- Precision weatherproof seams (profiles: slate, cedar, shake, tile) and mechanical fastening (profile: standing seam) deliver long-term leak protection during wind-driven rain events
- Panels tested to 193+ km/h (120+ mph) for severe windstorms common to Mason County and Sherwood’s exposed ridge lines
- Advanced water-shedding installation resists prolonged heavy rainfall and keeps Sherwood roofs watertight through Puget Sound–influenced wet seasons
- Snow-shedding metal panels reduce snow buildup and help prevent ice dams during Sherwood’s occasional freeze–thaw winter cycles
- Designed to withstand rapid seasonal transitions and sustained moisture that create cool, damp roof conditions across Sherwood
- Class A fire-rated available for added protection where seasonal dry spells and ember exposure occur in Mason County
- UL 2218 Class 4 impact resistance protects Sherwood roofs from hail, falling branches, and storm debris
- Energy-efficient cool-roof performance lowers attic heat gain during summer heat waves and improves year-round comfort in Sherwood homes
- Solar-compatible roof surfaces engineered for modern bracket-mounted photovoltaic systems on Sherwood properties
- Fully recyclable aluminum roofing reduces lifecycle environmental impact for Mason County homeowners pursuing sustainability
- Low-maintenance finish and profile reduce moss, algae, and routine upkeep compared with asphalt shingles in Sherwood’s damp, forested neighborhoods
- Warranty-backed: Lifetime-limited transferable warranty provides measurable long-term protection and resale benefit for Sherwood houses
- Engineered to shed extreme rainfall from Pacific Northwest atmospheric rivers that can inundate roofs in Sherwood and surrounding Mason County areas
- Although Sherwood sits inland from Mason County’s shoreline, the Alunar® coating and corrosion-proof aluminum mitigate corrosion risk for properties near Puget Sound inlets and tidal zones
Metal roofing built for Sherwood's climate
Averages (10-yr): ~1208 mm rain and 29 cm snow per year, ~3033 sunshine hours, mean 11.2°C, typical daily-max winds ~16 km/h with gusts to 120 km/h, and ~37 freeze–thaw days per year.
- 29 cmavg. snow / year
- 1208 mmavg. rain / year
- 37freeze–thaw days / year
- 120 km/hpeak wind gusts
- 3033 hrsannual sunshine
- 11.2°Cmean temperature
Interlock® aluminum roofing is engineered for these conditions — wind-rated to 193+ km/h (120 mph), UL 2218 Class 4 impact-rated, Class A fire-rated, and built to shed snow and resist ice dams and freeze–thaw cracking, backed by a lifetime limited warranty.
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 [email protected]
- Toll-Free 1-866-733-5811
- Customer Service [email protected]
- 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 Sherwood, Washington
Interlock® Aluminum Roofing — all-climates performance specs for Sherwood, 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 Sherwood, 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 Sherwood, WA
Every marker is a real, anonymized Interlock® aluminum roof completed by a Certified Interlock Installer. Explore verified Interlock® installations near Sherwood, 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 Sherwood on the interactive project map →Browse all Interlock® projects in Washington →See more Interlock® projects →
What our customers are saying:
Thanks for a very positive roofing experience! Our new roof is so beautiful we’re thinking of charging a fee to all the gawking neighbors that stop by to admire it!!! This was fun, positive experience from start to finish. Our sales rep spent three hours at our home going over every possible detail with us. He was knowledgeable, friendly and answered all our questions. As you can see by the pictures we have a pretty basic roof. There was no tear off to do; still, our three installers were 80% done on the very first day! Everything was done and cleaned up to our satisfaction by the end of day two. Our installers were friendly, courteous and hard working. I watched them for a few minutes as they all worked like a finely tuned machine installing our roof in perfect rhythm. For us, Interlock meant that the third time was the charm. We’d tried to do business with two other companies. The first took a large amount of money as a down payment and gave absolutely no customer service for two months. We got our money back and started over. The second company gave an inaccurate bid. Needless to say, we entered into this contract with some trepidation. interlock is a fabulous company and we’d recommend them to anyone in the market for a new roof!
We are writing this letter to show our appreciation for the wonderful job that was done on our roof. From the date your company representative met with us in our home to the date of completion, words cannot express how completely satisfied we are with your company. We definitely wanted a quality roof and were very impressed by the representation that was given to us. The product you provide was enough for us to make our decision, however it was a huge plus not to have to deal with a pushy salesman and to have such polite, friendly and hard working men providing the service. It was a pleasure to have them around our home. The quality, craftsmanship and lifetime warranty of this roof far outweighs the increased costs over other roof systems. However, other roof systems don't come with lifetime warranties and many only last for 8 to 10 years. We may have paid a little more initially, but how wonderful it is to know we will never have to re-roof our home again. And in addition to all of the above, it looks so beautiful and has added so much style to our home. I never dreamed a roof could make such a difference. Again, Thank you so much and be sure to know we will highly recommend your company to all of our family and friends.
I am very pleased with the entire experience with Interlock Roofing. Ross did a fantastic job of showing me all of the options available, and explaining how Interlock is different from other roofing. This was not a hard sales pitch. I was pleasantly surprised by how affordable a metal roof was. I had five other estimates for a traditional composite roof, and the price difference for a forever roof was negligible considering all the benefits. Next, the installation. These guys were amazing! Only two guys doing the demo and reroof, but very hard workers and did a fantastic job. It seems rare these days to find skilled tradesmen that take pride in their work, and these guys exceeded my expectations. I also took advantage of Interlock’s financing. Drew was very helpful and accommodating. The whole process was taken care of through Interlock, making it super convenient and great communication throughout. I will highly recommend:)
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 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.
Interlock Roofing is amazing. From the first day I met their salesman to the day they started work on our barn and house. They were very easy to talk to and express our concern about how important it was to keep our hay safe from rain and the ground around the barn safe for the animals. They were fast exceptionally clean and so much fun to get to know. I definitely would recommend this company to anyone who wants to have a roof that will last a life time. Thank you for an amazing job and two beautiful roofs!
My wife and I want to express our complete satisfaction with the "Aged Copper" roof your firm installed on our "Barn-house" and gazebo. The two roofs have a high quality appearance and they enhance the looks of the property. We are looking forward to many years of satisfaction. We are now planning to re-paint the house with a color to better blend with the roof. The work performed by your installers was outstanding. They were friendly and very professional. They worked efficiently and energetically, and it was obvious they had the skills to do the job. Thank you for being such an excellent firm.
My husband and I would like to thank you for coming to our residence and explaining your product and all of its advantages. We were very impressed at this time and excited to start the beautification process of our home, which has been in my husband’s family for 5 generations now. It has undergone many remodels, upgrades, and changes throughout the years with a lot of help from friends and family. We will be celebrating its 100th birthday this year. The new roof is definitely a wonderful way to do so! The whole Interlock family was friendly and extremely easy to work with from the beginning of this process to the end. The job was started on time and finished when promised. We are very pleased with how smoothly the project went and very thankful that we were not the ones on top of the house!
HELLO! I am Gerry from Olympia, Washington. A few years ago, I had my re-roofing done by INTERLOCK ROOFING SYSTEM for my house here in Olympia. I would like to thank the INTERLOCK ROOFING SYSTEM for the best, beautiful metal roof I ever had; the color choice never changed in spite of the weather condition here in Washington. So, if you want your home to deserving a thorough, keen, professional touch, quality, and professionalism, I would highly recommend INTERLOCK LIFETIME ROOFING SYSTEMS for your COMPLETE METAL ROOFING.
We both work for Nordstrom and have come to expect a certain level of customer service. Both Paul and Ross were exceptional in this regard. They were knowledgeable friendly and very thorough! I would highly recommend interlock for anyone looking into metal roof options.
The roof is absolutely beautiful and compliments our home. The work was fast and professional. Communication about scheduling. Clean up of job site. We absolutely love the roof.
We were extremely pleased with Interlock Roofing as our selection to install an aluminum roof on our house and two outbuildings. The installation team were extremely hard workers and were always courteous and conscientious and left our project very clean. We would highly recommend all of them to anyone interested in a new roof including Paul Wright and the administration staff. Ron and Joanne Quiring nothing
Nearby service areas in Mason County
Interlock® metal roofing is also installed in these communities near Sherwood:
Interlock Metal Roofing (PNW) Inc. also services nearby States
Beyond Sherwood, our team installs Interlock® metal roofing across:
Metal Roofing FAQs for Homeowners in Sherwood
The following metal roofing FAQs are designed specifically for homeowners in Sherwood, Washington. Whether you are building a new home or replacing an existing roof, understanding how roofing materials perform in local weather conditions is essential. From wind and storm protection to fire resistance, hail impact, snow loads, and coastal moisture exposure, Interlock’s Lifetime Aluminum Roofing System is engineered to provide long-term durability, energy efficiency, and peace of mind in Sherwood.
Can a metal roof rust in Sherwood's rainy climate?
No—aluminum cannot rust because it contains no iron. Interlock panels use roofing-grade 3105-H24 and 3003-H24 aluminum alloy (ASTM B209), which forms a self-healing oxide layer when exposed to air. In Sherwood's 1208 mm annual rainfall and salt-influenced Pacific Northwest environment, this property means your roof stays corrosion-free for decades, unlike steel roofs that require ongoing protection. The Alunar 70% PVDF fluorocarbon finish on both sides adds another 30-year warranty against chalking and fading, protecting against the region's 3033 annual sunshine hours.
Will a metal roof dent in hailstorms, and does it affect insurance?
Interlock metal roofing carries a UL 2218 Class 4 impact rating—the highest available—and the Guardian Warranty covers perforation from hailstones up to 1.5 inches. This non-prorated material coverage, combined with the four-way interlocking panel design, often qualifies homeowners for insurance discounts in regions prone to severe weather. While the PNW rarely experiences major hail, Sherwood's recorded wind gusts reach 120 km/h, and the same impact-resistant engineering that handles hail also handles wind-driven debris. Contact your insurer directly about discount eligibility once installed by Interlock Metal Roofing (PNW) Inc.
Do I need to reinforce my home's structure for a metal roof?
No structural reinforcement is needed. Interlock's metal roofing is extraordinarily light: the Slate profile installs at 0.41 lb/sq ft, while the Mediterranean Tile—despite replicating heavy clay tile—installs at only 0.59 lb/sq ft, making it about 96% lighter than concrete or clay tile. This light weight means installation can proceed over most existing roofs without framing upgrades. In Sherwood, where annual snowfall averages about 29 cm, the load remains minimal. Your existing structure already supports the weight of asphalt shingles plus ice; aluminum weighs far less, reducing long-term stress on rafters and walls.
Will my metal roof blow off in Sherwood's wind and storms?
Interlock metal roofing is warranted to resist wind speeds up to 120 mph (193 km/h) when installed to specification. Sherwood's typical daily-max winds average 16 km/h with gusts reaching about 120 km/h—well within that range. The four-way interlocking aluminum panels create a unified system that distributes wind loads across the entire roof deck. Combined with proper fastening documented in ESR-1790 (the ICC-ES evaluation report reissued in 2025), this design exceeds current building code requirements for the region. The system's light weight also means wind has less leverage against the roof than it does against heavier asphalt or slate alternatives.
How does a metal roof perform in Sherwood's heavy rainfall?
Sherwood receives about 1208 mm of annual rainfall—well above the U.S. average—and Interlock's four-way interlocking panels are engineered for exactly this climate. Each panel locks to its neighbors on all four sides, creating a unified, overlapping system that sheds water efficiently without relying on sealant. The panels install over solid deck and rated underlayment (as specified in ESR-1790), which captures any water that bypasses the interlocks and channels it safely to gutters. This two-stage design, combined with the metal's non-absorptive nature, delivers leak protection that outperforms asphalt shingles, which degrade from constant moisture exposure over years.
How much maintenance does a metal roof need compared to asphalt or wood?
Interlock metal roofing requires virtually none. Asphalt shingles need inspection every 3–5 years and replacement within 15–20 years; wood shake splits and rots in the PNW's 37 annual freeze-thaw days and constant moisture. Metal roofs have no shingles to curl, no wood to rot, and no asphalt to degrade. The Guardian Warranty's lifetime limited coverage includes these failure modes for the original owner. Occasional gutter cleaning and removing debris is all that's needed. The aluminum itself is CALGreen-verified for reduced maintenance, and the Alunar finish resists the 3033 annual sunshine hours that fade asphalt.
What warranty comes with Interlock metal roofing?
The Guardian Warranty is a lifetime limited material warranty for the original owner—non-prorated, meaning no deductions for age—covering rusting, rotting, splitting, cracking, curling, and loss of impact resistance. It's also one-time transferable, giving the next owner 50 years of protection from the roof's completion date. This structure means if you sell within 10 years, the buyer inherits five decades of coverage. No other roofing system offers this combination. In Sherwood's 1208 mm annual rainfall and 29 cm snow, the non-prorated lifetime term ensures you're protected against the full spectrum of moisture-related failures without worrying about diminishing coverage over time.
Will a metal roof reduce my cooling costs in summer?
energy-efficient Interlock colors are rated for thermal emissivity up to 0.84 and initial solar reflectance up to 0.55 (Aged Copper Penny), meaning they reflect heat that asphalt absorbs. The Cool Roof Rating Council rating quantifies this difference: while Sherwood's mean temperature averages 11.2°C and isn't a hot climate, the reflective coating reduces attic heat buildup during the 3033 annual sunshine hours, lowering cooling demand even in mild seasons. Metal roofing's solid conductivity also lets heat disperse quickly rather than radiating into the home. Over a 50-year lifespan, these incremental savings add up, especially paired with the roof's durability—you're not replacing it every 15 years like asphalt.
How long does it take to install an Interlock metal roof, and can it go over my current shingles?
Installation typically spans 2–5 days depending on roof size and complexity, with minimal disruption to your home. Yes, Interlock installs over most existing roofs without tearoff—the light weight (0.41 to 0.59 lb/sq ft) eliminates the need for structural upgrades, so installation proceeds over asphalt, wood, or composite shingles directly. This saves thousands in labor and landfill fees. Interlock Metal Roofing (PNW) Inc. has served the region since 1997 and handles all site specifics. The current promotion—no payments and no interest until Spring 2027, or 10% off installation—can offset costs during the project timeline.
Is a metal roof more environmentally responsible than asphalt?
Yes. Interlock aluminum roofing is approximately 95% recyclable at end-of-life, meaning the material cycles back into the aluminum supply chain rather than landfills. Asphalt shingles, by contrast, are torn off every 15–20 years and disposed of in landfills—in Sherwood's 1208 mm annual rainfall and 29 cm snow, asphalt fails sooner due to moisture cycling. Over a 50-year period, one metal roof replaces three asphalt roofs, avoiding three tearoff-to-landfill cycles. Aluminum manufacturing is energy-intensive upfront, but recycling uses 95% less energy than primary production. A metal roof's 50-year lifespan means you break even environmentally within the first 20–25 years, then operate entirely in the black.
Is a metal roof a good choice for Sherwood’s climate?
Yes. Sherwood averages about 29 cm of snow, 1208 mm of rain, roughly 37 freeze–thaw days a year, with peak wind gusts near 120 km/h. Interlock® aluminum roofing is wind-rated to 193+ km/h (120 mph), UL 2218 Class 4 impact-rated and Class A fire-rated, and its four-way interlocking panels shed snow and resist ice dams and freeze–thaw cracking — all backed by a lifetime limited, transferable warranty.
