Metal Roofing in Granville, Wisconsin — Lifetime Interlock® Aluminum Shingles Installed Locally
Granville Metal Roofing Experts Installing Lifetime Interlock® Aluminum Shingles Since 2001
Metal Roofing Built for Granville's Heavy Rain, Snow Loads, Windstorms & Lifetime Protection
Interlock Metal Roofing is a trusted metal roofing contractor and local installer serving homeowners in Granville, Wisconsin (Milwaukee County) since May 17, 2001; as the exclusive authorized installer of Interlock® Lifetime Aluminum Roofing Systems, we provide roof replacement and re‑roofing throughout Granville using heavy‑gauge, fire‑resistant, energy‑efficient cool roofs engineered for performance, beauty, and durability. The Interlock Lifetime Roofing System is ideal for local conditions—designed to shed Milwaukee County’s heavy snow and ice, resist freeze–thaw damage and ice dams, withstand wind‑driven rain and seasonal temperature swings (including summer heat and UV exposure near Lake Michigan), and deliver long‑term protection in humid, coastal‑influenced climates. Choose the timeless look of slate, cedar shingles, shake, Mediterranean tile, or standing seam with the strength of metal; every roof is finished with the Alunar® Coating System and backed by a Lifetime Warranty for Granville homeowners.

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
Freeze–Thaw Durable
Endures ~79 freeze–thaw days a year
Rain & Moisture Proof
Repels ~822 mm of rain a year
- Authorized Interlock® installer serving Granville and surrounding Milwaukee County homeowners
- Designed for Granville’s inland Midwest climate: heavy snow loads, repeated freeze–thaw cycles, and seasonal windstorms
- 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 are coated with the Alunar® Coating System (no visible aluminum surface) for enhanced corrosion and finish longevity
- Tested for severe wind—rated to 193+ km/h (120+ mph) to withstand the gusts that impact Granville-area roofs
- Snow-shedding panel geometry reduces snow accumulation and lowers ice-dam risk during rapid thaw–refreeze events
- Resists freeze–thaw fatigue and thermal cycling common in Milwaukee County winters through robust substrate and seam design
- Class A fire-rated available for added protection and code flexibility
- UL 2218 Class 4 impact resistance to protect Granville homes from hail, falling branches, and storm debris
- Low-profile finish and steep-slope drainage limit moss and lichen growth on shaded eaves and north-facing roof sections
- Energy-efficient cool-roof performance reduces summer heat gain and improves attic comfort during Midwest heat waves
- Engineered for modern rooftop PV: compatible with bracket-mounted solar systems without compromising weatherproof seams
- Fully recyclable aluminum supports long-term sustainability goals for Granville homeowners
- Architectural profiles replicate slate, cedar shake, and tile while offering standing-seam mechanical fastening options for local curb appeal
- Backed by a Lifetime-Limited transferable warranty to protect resale value and long-term performance in Granville conditions
Metal roofing built for Granville's climate
Averages (10-yr): ~822 mm rain and 88 cm snow per year, ~3128 sunshine hours, mean 9.4°C, typical daily-max winds ~22 km/h with gusts to 96 km/h, and ~79 freeze–thaw days per year.
- 88 cmavg. snow / year
- 822 mmavg. rain / year
- 79freeze–thaw days / year
- 96 km/hpeak wind gusts
- 3128 hrsannual sunshine
- 9.4°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 Industries (Midwest) Inc.
- 2355 Fairview Ave N, Roseville, MN 55113, United States
- Phone 414-348-8870
- Local lines Minnesota 612-800-8686
- Sales & Marketing sales@minnesotametalroofing.com
- Toll-Free 1-866-733-5811
- Customer Service mwservice@interlockroofing.com
- www.WisconsinMetalRoofoing.com
- Also wisconsinmetalroofing.commidwestmetalroofing.com
- License WI #898136
- EPA Lead-Safe Certified Firm #NAT-F224594-2
- Serving Wisconsin since 2001 — 25 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
- SaturdayClosed
- SundayClosed
Interlock Metal Roofing Wisconsin is a trusted metal roofing contractor proudly serving homeowners and businesses throughout the State of Wisconsin. Backed by decades of manufacturing and installation expertise, Interlock has earned a reputation for exceptional craftsmanship, long-term reliability, and outstanding customer care. As a specialized installer of premium aluminum and standing seam metal roofing systems, Interlock Metal Roofing Wisconsin provides exclusive lifetime roofing products engineered to perform in Wisconsin’s demanding climate — from heavy snow loads and ice dams to hailstorms, high winds, freezing temperatures, and dramatic seasonal weather swings. Built on integrity, professionalism, and superior workmanship, Interlock Metal Roofing has completed thousands of successful roofing installations across North America, helping Wisconsin property owners invest in roofing systems that are both beautiful and built to endure. Our team is known for transparent communication, efficient project execution, and meticulous installation standards, supported by industry-leading materials and comprehensive warranty protection. Interlock’s commitment to excellence is reflected in its dedication to safety, ongoing installer training, and strong customer satisfaction throughout the region. With highly trained crews and strict adherence to best practices, we deliver durable, energy-efficient roofing solutions that enhance curb appeal, increase property value, and provide decades of dependable protection against Wisconsin’s harsh winters and severe storm conditions. Whether you need a residential metal roof replacement, a commercial roofing upgrade, or a custom architectural metal roofing system, Interlock Metal Roofing Wisconsin is the trusted choice for premium lifetime metal roofing — combining proven expertise, exclusive products, and service you can count on.
Recognition GuildQuality Guildmaster Award — verified customer satisfaction (GuildQuality)
Accredited BBB Accredited A
Get a Free Metal Roof Estimate in Granville, Wisconsin
Interlock® Aluminum Roofing — all-climates performance specs for Granville, Wisconsin
| 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 Granville, Wisconsin:
Explore all Interlock® metal roofing systems, or see the Guardian lifetime warranty and independent testing reports.
Recent Interlock® roofs across Wisconsin
Completed Interlock® metal roofs near Granville, WI
Every marker is a real, anonymized Interlock® aluminum roof completed by a Certified Interlock Installer. Explore verified Interlock® installations near Granville, Wisconsin, 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 Granville on the interactive project map →Browse all Interlock® projects in Wisconsin →See more Interlock® projects →
What our customers are saying:
Hello Greg, I just had to drop you a line to tell you how pleased we are with the Interlock Roofing System that was installed last week. I have to admit that as good as I was hoping it would look, it turned out to be so much better than I had even hoped. We couldn’t be prouder of how our house looks now; the new roof is visually stunning. We can now breathe a huge sigh of relief, knowing that we’ll never again have to go out into the yard and pick up the pieces of asphalt shingles that would blow off of the roof after a storm or a high wind day. To boot, the very day after the roof was completed, we had someone who identified himself only as “your nosy neighbor from 10 miles down the road,” who stopped, knocked on our door and started asking questions about the roof. He was shocked to hear that it was a metal roof. He thought that we had installed a slate roof! He was very interested to hear all the facts about the roof, and suddenly I became Interlock Roofing’s most avid salesman. I brought out your business card so that he could take a picture of it with his cell phone, and he said he’d be contacting you soon. I’ve also been talking about the roof with some of the guys at work who had seen the before and after pictures that I brought in, and I’m sure that you will be hearing from some of them in the future too. Now, as much as I couldn’t be happier with contacting you and doing business with you, I have to tell you that even you will have to take a back seat to the super awesome job of your installers, Jesse and his team. To say we were blown away by these guys would be the understatement of the century. They came in like a whirlwind and started doing their thing and made astounding progress in such a short period of time, it blew us away. Jesse himself is such a great face to have attached to your company. He is professional, knowledgeable, and so personable that we knew in an instant that we were in good hands with him and his team. All of his team members were that way, and honestly, the hardest working group of guys that you will ever witness. We expected it to take anywhere from 5 days to a week to get our whole roof done. These guys had it done in 2 days and a couple of hours, and they left no stone unturned in doing the A-1 job that was promised. They even fixed a couple of cosmetic items on our existing siding to boot! What a great bunch of guys. And let me reiterate one more time,…Interlock, as a company, should feel confident and proud to have Jesse and his team representing them. I’m positive you will never find a better team to install your product than them. Again, thank you for the product and the work that you’ve done. You now have not only a very satisfied customer in us, but you also have a couple of very enthusiastic ambassadors for Interlock Roofing Systems.
I have made, and continuously still make, numerous recommendations to family & friends to install a Interlock roof. And, I have produced pictures on demand that I stored on my smart phone. If possible, I would be appreciative if I could get the drone footage that Jesse had taken after the finishing of the installation. I believe it would be a great selling point coming from a true customer to help propel the Interlock name. There are just a couple areas on the roof that the installation crew could have touched-on during the installation, but overall the roof looks simply amazing. Quality certainly displays the professionalism the installers had put into their work. Since the installation of our new roof, we have received numerous compliments from many of our neighbors that walk around our subdivision, plus a handful of neighbors in the adjoining subdivisions. Many questions have been asked with many answers given. We are definitely happy with our new Interlock roof. We have NOT once questioned or second guessed our decision to install an Interlock roof. It is one of the best decisions we have ever made for re-investing in our home...Thank you, Interlock!
I never really thought I could be thrilled about a roof, but I have to tell you; our new Interlock roof is beautiful! It adds true elegance to our home. We know it adds value as well, and the fact that we will never need to re-roof again is a definite advantage. Everyone within our organization, from the initial phone contact to the installation crew, was courteous and pleasant to work with. The install went smoothly and the crew kept the site clean from beginning to end. Everybody we have shown our Interlock roof to has seemed quite impressed also. We would (and in fact have already done so) recommend Interlock Roofing to others.
Excellent roof! Looks good! The installers were courteous and professional. Put the tarp all around the house and kept the site very clean. I was impressed with their super service. They bent over backward to please us. The A-Team of Roofing! When it rains, it is NOT any louder, and we are in a wind zone, and shingles have not blown off, and we have had the roof since 2008. The snow slides off, too! And the salesman knows his product and explains it well. It will add value to the house. Unlike asphalt, that's like tar and paper, and doesn't hold up. The Interlock Lifetime Roof is super durable!d Greg Weber the salesman, knows his product and explains it well. It will add value to the house. Unlike asphalt, that’s like tar and paper and doesn’t hold up. The Interlock Lifetime Roof is super durable!
We purchased our roof in 2009 and as you can see from the pictures taken in May of 2017, our roof looks as new as the day we bought it. Here are the things we have noticed most about our Interlock Lifetime Roof over the last 8 years. It keeps our house much cooler in the summer than the asphalt roof we used to have. It really sheds snow, and the snow guards work great. We never need to use a snow rake. We love the durability and the curb appeal. Greg Weber our representative, who we were enthused to learn, is still with the company. When we saw him in 2009 he laid out all the variables in a professional way and our Interlock Roof has lived up to all of our expectations and promises he made. All companies promise results, service, and quality. Interlock delivers.
The installation was super smooth. Every installer was courteous and professional. We get lots of compliments, and people stop by all the time to admire it. One of the biggest misconceptions about metal roofing is people think it’s loud. Our Interlock roof is very silent. The only way I know if it’s raining is if I look out a window. Also, the snow just slides off. We are also in a wind tunnel area, and we have never lost an Interlock shingle, and we have had the roof for many years. We were so pleased with our Interlock roof that we put the same roof on our lake home in northern Wisconsin. We get a lot more snow up there and the Interlock’s snow-shedding performance capabilities are second to none on that roof, too!
I love the roof! It looks great, and the squirrels that we’re crawling all over my old asphalt roof slide right off it. The snow slides off, too. I hope to get some $500 referrals. The crew was terrific, hardworking, courteous, polite, and clean.
Drip, drip, drip. This is not a sound you want to hear at 3:30 am… in bed… coming from your attic… in the dead of winter. A quick peek in the attic confirmed my worst fears, the ice dam on the roof was allowing melted water to seep through the crappy asphalt shingles and into the house. We called a local contractor and had the ice dam removed, but this didn’t fix the underlying problem that our current roof was cheap and damaged. My wife and I moved into a beautiful three-story brick Tudor on Madison’s near west side in the fall of 06′. It was perfect in that it had been beautifully remodeled with gorgeous woodwork, marble, and stunning attention to detail, with the exception of the roof. We had decided that, barring any unforeseen circumstances, this was the house we were going to stay in until retirement, so why not invest in a metal roof. After a couple of weeks of research and interviewing, we settled on Interlock. Part of the choice was made on the quality of the product, and part was made on the salesmanship of the rep, Chuck. Work started and except for some problems with the weather, things progressed smoothly. We were especially impressed with the steps the crew took in regard to safety, and our stay-at-home neighbor told us about how exciting the crew was, “you’re definitely getting your money's worth,” was her exact quote. At the end of the job, the crew even emptied all the trash we had pulled out of the attic for us. Now that’s service! After everything is said and done, we’ve been able to cap off our gorgeous house with an equally gorgeous roof.
I had Interlock put on a beautiful red slate roof 17 years ago.The roof still looks beautiful. 5 years ago, I had them also re-roof my garage with the same type of slate. The roofs look gorgeous and I have no maintenance whatsoever.I get complements all the time. The guy whom I contracted with was named "Tim' but has since died. He was a really nice guy. Back in 2009, the roof was much cheaper. ( I actually paid more for the garage 5 years ago!) I am extremely happy with the roofs. The guys did a wonderful job, replacing rotted boards where necessary. They also told me about very cheap gutters I could buy at Menards instead of those ridiculously - priced "special" gutter systems. I bought them and they placed them on my buildings.This home will go to my daughter one day; I do not want her to have to lift a finger. Note that I had an asphalt roof previously. It lasted only 12 years. The shingles curled up under the sun and cracked. They looked terrible. I can honestly say that these metals roofs by Interlock are very much worth what you pay for them. They will last a lifetime with almost no maintenance. Instead of replacing a roof every 15 years and paying lots for asphalt or fiberglass, their metal roofs last very long and you will never have to re- roof again.
Dear Interlock Lifetime Roofing Systems: We purchased our Interlock Lifetime Roof in June 2014. We are very happy with the look, durability of the material, and finish. After a snowfall, the heat of the sun will warm the roof and allow the snow to shed from the roof. We have a great sense of security, knowing it can withstand higher winds than conventional asphalt. In fact, our neighbors lost many shingles in the last major wind storm, and our Interlock roof proved to be the high wind resistance product it is with all shingles intact. We love the fact it’s more reliable and has peace of mind knowing it has lots of longevity and will look brand new not only now but down the road. We also received a discount on our homeowner’s insurance. Overall, we were very satisfied with our sales representative Greg Weber, the company, the service, and the product.
In March 2017 we had an Interlock Lifetime Roof installed. Greg Weber, the salesman, was not pushy. We were very impressed with his salesmanship and the product. He also offered to have the Interlock product put on our wishing well in the front yard. That was something we really appreciated. The clean-up was excellent! Many neighbors and people who " data-wpil-keyword-link="linked">walk by the house have noticed the roof and asked a lot of questions. We have gotten lots of compliments!
The Interlock crew was able to take some extra time to coordinate with another contractor for solar installation. As a result, the final the result looks great and very functional. The materials used are very high quality, and they worked efficiently and cleaned up when finished.
Nearby service areas in Milwaukee County
Interlock® metal roofing is also installed in these communities near Granville:
Interlock Industries (Midwest) Inc. also services nearby States
Beyond Granville, our team installs Interlock® metal roofing across:
Metal Roofing FAQs for Homeowners in Granville
The following metal roofing FAQs are designed specifically for homeowners in Granville, Wisconsin. 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 Granville.
Does metal roofing handle Wisconsin's snow and ice buildup better than asphalt shingles?
Yes. Granville averages about 88 centimeters of snow annually, and metal's smooth, hard surface sheds snow and ice far more effectively than asphalt's granular texture, which traps moisture and promotes ice dam formation. The four-way interlocking aluminum panels create a unified surface—no seams or valleys where ice can wedge and split shingles. With roughly 79 freeze-thaw cycles per year in your area, that repeated expansion and contraction that cracks asphalt simply doesn't affect aluminum. You'll stay ahead of winter without constant roof raking or ice removal.
Why don't aluminum metal roofs rust like steel ones do?
Aluminum fundamentally cannot rust because it contains no iron—rust requires iron to form. Instead, aluminum develops a microscopic oxide layer that actually protects the underlying metal and heals itself when scratched. That's why Interlock's roofing-grade 3105-H24 and 3003-H24 aluminum alloy (ASTM B209 certified) is topped with Alunar 70% PVDF fluorocarbon coating on both sides. In Granville, where you see about 822 millimeters of rain yearly, that double-sided protection becomes a genuine asset; steel would require constant maintenance. The Guardian Warranty explicitly covers rust—because it will not occur.
Will freeze-thaw cycles in Wisconsin damage a metal roof over time?
No. Aluminum's atomic structure doesn't absorb and release water the way asphalt and wood do, so freeze-thaw cycling—Granville experiences roughly 79 cycles annually—causes no cracking, curling, or splitting. Asphalt shingles absorb moisture between freeze and thaw, expand unevenly, and fail. Aluminum expands minimally and uniformly. Because the four-way interlocking panels move slightly as one unit with temperature swings and the Alunar coating (warranted 30 years against chalking and fading) doesn't degrade in those cycles, your roof remains structurally intact through decades of winters. The Guardian Warranty covers cracking and curling—materials that simply won't fail this way.
Can a metal roof stand up to Granville's wind gusts?
Absolutely. Milwaukee County sees typical gusts around 96 kilometers per hour, and Interlock's four-way interlocking aluminum panels are warranted to resist wind speeds up to 120 miles per hour (193 km/h) when installed to specification. The interlocking design means each panel is mechanically locked to its neighbors on all four sides—wind tries to lift the panel, but the neighboring panels hold it down. You're not relying on fasteners alone; the panels brace each other. The ICC-ES ESR-1790 evaluation (reissued 2025, covering IBC and IRC codes) certifies this performance. Your roof won't lift, flutter, or fail in the gusts this region regularly produces.
Does an aluminum metal roof reduce hail damage and help with homeowner's insurance?
Yes on both counts. Interlock aluminum roofing carries UL 2218 Class 4—the highest impact rating available—and the warranty even covers perforation from hailstones up to 1.5 inches. Class 4 means the roof has been impact-tested to withstand severe hail and retain its structural integrity and water-shedding ability. Some insurers recognize this durability and offer discounts; you'll want to check with your carrier about premium reductions for non-combustible, Class 4-rated roofing. In Wisconsin's spring and summer storm season, that rating is concrete protection. Unlike asphalt shingles, which dent easily and develop punctures that seed leaks years later, aluminum's hardness and the warranty's explicit hail coverage give you genuine peace of mind.
Do I need to reinforce my home's structure for a metal roof?
No. Interlock's aluminum is extraordinarily light—the Mediterranean Tile profile, for example, installs at only about 0.59 pounds per square foot, making it roughly 96 percent lighter than concrete or clay tile. Your existing roof structure—whether wood trusses or rafters rated for asphalt shingles—handles metal roofing without reinforcement. This also means Interlock can install directly over most existing roofs, eliminating the cost and landfill impact of tearing off old material. Granville's building officials and ICC-ES ESR-1790 evaluation confirm the installation is code-compliant. You save on structure upgrades, labor, and disposal fees compared to heavyweight tile or slate alternatives.
What does Interlock's lifetime warranty actually cover and how long does it really last?
The Guardian Warranty is a non-prorated lifetime limited material warranty for you as the original owner—meaning if a panel fails from rust, rot, splitting, cracking, curling, or loss of impact resistance, Interlock replaces it at no cost, year one through year thirty and beyond. It's transferable once to the next owner, who receives 50 years of coverage from completion. That's genuine security: your roof won't cost you surprise replacement dollars. The Alunar coating carries a separate 30-year warranty against chalking and fading (ASTM D4214 and D2244 measured). Combined with aluminum's inherent inability to rust or rot—properties verified by material science, not marketing—you're buying the last roof you'll install.
How much maintenance does a metal roof require compared to asphalt or wood shakes?
Aluminum metal roofing requires virtually none. Unlike asphalt shingles, which shed granules, curl in heat, and degrade under UV exposure, or cedar shakes, which split, warp, and need regular treatment to resist rot and insects, Interlock's aluminum panels are inert. They don't absorb moisture (so no rot or fungal growth across Granville's 822 millimeters of annual rainfall), don't expand and contract unpredictably in the 79 yearly freeze-thaw cycles, and shed debris naturally in rain. CALGreen-verified, the roofing qualifies specifically for reduced maintenance claims. You'll wash it occasionally for aesthetics, but that's it. Over a 50-year roof life, that's zero structural maintenance—no repairs, no sealant reapplication, no moss treatment.
Is metal roofing actually better for the environment than asphalt?
Yes, measurably. Interlock aluminum roofing is approximately 95 percent recyclable at end of life, and aluminum recycling uses only five percent of the energy required to produce virgin aluminum. Compare that to conventional asphalt shingle removal: every 20 to 25 years, you tear off 100+ pounds of asphalt and fiberglass per 100 square feet and send it to landfill—it doesn't biodegrade. Over Granville's typical roof lifespan, that's two or three full tear-off cycles per home. Aluminum's longevity (lifetime warranty, 50-year transfer term) means you install once. The Alunar coating (warranted 30 years) and the material's durability eliminate the asphalt replacement-and-waste cycle entirely. Your roof becomes a one-time investment, not a recurring environmental cost.
Does Interlock have local installers who know Granville and Milwaukee County?
Yes. Interlock Metal Roofing has served this region since 2001 and operates directly in Granville and Milwaukee County. That tenure matters: local installers understand Wisconsin's freeze-thaw cycles, snow loads, and typical wind gusts around 96 kilometers per hour. They know the permit process, local inspectors, and how to install correctly over existing roofs in cold climates. Interlock manufactures in Delta, BC, and has installed everywhere from coastal salt-air homes to an Antarctic research station—so regional expertise is backed by proven global experience. When you call, you're reaching installers who've done hundreds of roofs in your neighborhood and can speak directly to how Interlock performs through Granville winters and summer storms.
Is a metal roof a good choice for Granville’s climate?
Yes. Granville averages about 88 cm of snow, 822 mm of rain, roughly 79 freeze–thaw days a year, with peak wind gusts near 96 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.













