Metal Roofing in Calgary, Alberta — Lifetime Interlock® Aluminum Shingles Installed Locally

Calgary Metal Roofing Experts Installing Lifetime Interlock® Aluminum Shingles Since 1999

Metal Roofing Built for Calgary's Heavy Rain, Snow Loads, Windstorms & Lifetime Protection

Interlock Metal Roofing (Alberta) Ltd., founded February 5, 1999, is a trusted metal roofing contractor and exclusive authorized installer of Interlock® lifetime aluminum roofing systems serving homeowners throughout Calgary and Alberta. Our Interlock Lifetime Roofing System—heavy-gauge, fire-resistant, energy-efficient “cool roof” construction protected by the Alunar® Coating System and backed by a Lifetime Warranty—is engineered for performance, beauty, and durability in Calgary’s climate: it sheds heavy snow and ice to reduce ice-dam risk, resists wind and hail damage common on the prairies, and stands up to wide freeze–thaw cycles and high UV exposure at Alberta elevations. We provide roof replacement and re-roofing across Calgary, offering timeless looks—slate, cedar shingles, shake, Mediterranean tile, or standing seam—with the long-term protection and energy savings of metal.

Interlock metal roofing styles including slate, cedar, shake, tile, and standing seam in Calgary, Alberta

Performance you can measure (all climates)

Wind- and storm-resistant Interlock® metal roof rated to 193+ km/h for Calgary, Alberta

Weather Resistant

Tested to 193+ km/h (120 mph) winds

Interlock® aluminum metal roof in Calgary, Alberta backed by a Lifetime-Limited, transferable warranty

Durable

Lifetime-Limited, transferable warranty

Energy-efficient cool-roof Interlock® aluminum metal roofing in Calgary, Alberta

Energy Efficient

Reflective cool-roof lowers cooling costs

Freeze–thaw durable Interlock® metal roof for Calgary, Alberta

Freeze–Thaw Durable

Endures ~122 freeze–thaw days a year

UL 2218 Class 4 impact- and hail-resistant Interlock® metal roof in Calgary, Alberta

Impact Resistant

UL 2218 Class 4 — top hail rating

Snow-shedding Interlock® metal roof built for Calgary, Alberta winters

Snow-Shedding

Built for ~97 cm of snow a year

  • Proudly manufactured in Canada by a family‑owned company, serving homeowners across Calgary and Metro Calgary
  • Exclusive authorized installer of Interlock® Lifetime Aluminum Roofing Systems in the Calgary region
  • Aluminum panels coated with the Alunar® Coating System (no visible aluminum surface) for durable, fade‑resistant protection
  • 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 for severe windstorms — built to withstand Chinook gusts and prairie wind events common around Calgary
  • Snow‑shedding panel design reduces heavy roof snow loads and helps prevent prolonged accumulation during Alberta winters
  • Components specified to resist repeated freeze–thaw cycles and minimize fastener movement and membrane stress in Calgary’s variable winters
  • Class A fire‑rated available — enhances ember resistance and roof survivability during Alberta wildfire seasons that can affect Calgary’s outskirts
  • UL 2218 Class 4 impact resistance for hail and storm debris protection, addressing Calgary’s frequent hailstorm exposure
  • Cool‑roof performance reduces heat gain during Calgary summer heat waves and improves attic comfort and energy efficiency
  • Engineered compatibility with modern bracket‑mounted photovoltaic systems for Calgary homeowners pursuing rooftop solar
  • Fully recyclable aluminum construction supports long service life and sustainability goals typical of Calgary building practices
  • Low‑maintenance, smooth finish resists moss, lichen, and staining better than asphalt shingles across varied Calgary microclimates
  • Authentic architectural profiles (slate, cedar shake, tile, standing seam) deliver regional curb appeal for homes throughout Calgary and Metro Calgary
  • Robust waterproofing and fastener detailing protect against rapid spring melt, freeze‑thaw runoff, and summer thunderstorm downpours in Calgary
  • Backed by a Lifetime‑Limited transferable warranty to protect long‑term performance and resale value for Calgary homeowners

Metal roofing built for Calgary's climate

Averages (10-yr): ~333 mm rain and 97 cm snow per year, ~3330 sunshine hours, mean 4.7°C, typical daily-max winds ~18 km/h with gusts to 98 km/h, and ~122 freeze–thaw days per year.

  • 97 cmavg. snow / year
  • 333 mmavg. rain / year
  • 122freeze–thaw days / year
  • 98 km/hpeak wind gusts
  • 3330 hrsannual sunshine
  • 4.7°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 (Alberta) Ltd.

Hours

  • Monday8:00 AM – 4:00 PM
  • Tuesday8:00 AM – 4:00 PM
  • Wednesday8:00 AM – 4:00 PM
  • Thursday8:00 AM – 4:00 PM
  • FridayClosed
  • SaturdayClosed
  • SundayClosed

Interlock Metal Roofing (Alberta) Ltd. has proudly served homeowners across Southern Alberta since 1999, providing durable and energy-efficient aluminum roofing systems designed for the Prairies’ wide range of weather conditions. From Red Deer to Calgary, Lethbridge, and Medicine Hat, our roofs are engineered to withstand hail, wind, and snow—while enhancing the look and long-term value of your home. As part of one of Canada’s leading metal roofing manufacturers and installers, we’re committed to sustainable craftsmanship, professional installation, and a lifetime of protection backed by an industry-leading warranty.

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Part of the Interlock® certified installer network →

Get a Free Metal Roof Estimate in Calgary, Alberta

Interlock® Aluminum Roofing — all-climates performance specs for Calgary, Alberta

Spec / RatingClimate / 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 4Hail and impact debris: highest impact classification; resists cracking, splitting, and surface loss common with asphalt under hail strikes.
Snow & ice performance: interlocking, shedding profileHeavy 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 systemHigh heat, intense sun, thermal cycling: coatings resist UV breakdown and temperature-swing fatigue, slowing fading and surface degradation.
Moss / algae resistance: smooth coated surfaceWet 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+ yearsLong-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 transferableLifetime protection + resale value: guarantees long-term material confidence and transfers to future owners.

Available Profiles in Calgary, Alberta:

Explore all Interlock® metal roofing systems, or see the Guardian lifetime warranty and independent testing reports.

978 completed Interlock® metal roofs in Calgary, AB

Interlock® has completed 978 metal roofs in Calgary, Alberta between 1999–2026, across 6 roof profiles (Slate, Shingle, Tile, Cedar Shake, Cedar Shingle, Standing Seam). Every marker is a real, anonymized installation completed by a Certified Interlock Installer — explore them on the interactive map and photo grid below, filterable by profile, colour and year of completion.

  • 978completed roofs
  • 6roof profiles
  • 1999–2026years

4.6 / 5 — from 1,448 verified customer reviews in Alberta

What our customers are saying:

★★★★★
Review: August 7, 2025Completion: August 11, 2025

Absolutely Outstanding Experience with InterLock Roofing From our very first consultation with InterLock Roofing, we were impressed by their professionalism, integrity, and clear commitment to safety and quality. They assured us upfront that they held themselves to the highest standards—both in workmanship and in health and safety—and they delivered on every promise. When the team arrived on site, every worker was focused, diligent, and clearly well-trained in safety protocols. It was incredibly reassuring to see a company not only take pride in their work, but also prioritize the well-being of their crew in what is undeniably a dangerous trade. The final product was absolutely superb—flawless installation, meticulous attention to detail, and no shortcuts taken. The project was completed on time, with a thorough final review and sign-off process that left us fully confident in the longevity and performance of our new roof.Many of our neighbors complimented us on how our home is looking now:) We’re proud to have worked with a Canadian company that upholds such exceptional standards. InterLock Roofing stands out not just for the unmatched quality of their work, but also for their ethical approach and genuine care for both customers and employees. A super, super company—highly recommended!

★★★★★
Review: January 21, 2019Completion: November 13, 2018

Our experience with Interlock Metal Roofing Systems can only be described as highly recommended. From the start, Matthew was very knowledgeable on the roofing product and was able to fully describe what was needed for our house. He was able to give us multiple examples of homes that had this system installed on it which allowed us to visualize and decide on the style that we wanted. Once this was completed, he went out of his way to ensure that all of our questions were answered and that we were educated on this product. After the roof was ordered, Shauna did an exceptional job communicating the status of our roof and when it was expected to be delivered as well as when the installation would begin. She was extremely thorough in what we were to expect and the timing of everything that would occur. Due to it being a custom roof, the materials had to be manufactured prior to the installation being done. She continued to update us as the materials were being manufactured and any changes that occurred with the scheduling. She is an absolutely extraordinary resource to have and made the total experience complete. Without her work coordinating and communicating the status of the job, our satisfaction would not be at the same level! Our installer, Oswaldo, and his crew can only be described as extraordinary! They are truly Master Craftsmen and are some of the best we have ever worked with on ANY project. Their thoroughness, attention to detail, communication and general demeanor were beyond anything that could have been expected. From the time they arrived in the morning to the time they left every evening they were a joy to work with. The worksite was cleaned up every evening and was always organized as the job proceeded. Oswaldo and his crew are truly what made this job perfection! His updates on the project were very detailed and his explanation of every step of the process made us feel like we truly were fully involved. We could not recommend him any higher and he looked after our home like it was his own! We could not be prouder of the way the job was completed and we are very happy with the Interlock Metal Roofing System that was installed. The finished product truly is a work of art that will enhance our home for years to come!

★★★★★
Review: September 9, 2006Completion: August 2, 2006

I am pleased to say that the installation went very smoothly and that it was a pleasant experience. The installers were always in time, courteous, fast and professional. The thorough cleaning of the garden and around the house was particularly appreciated. The changes on the house are beyond expectations and the general curb appeal, with the stone tiles, making it the best of the neighbourhood. The added value to the house is obvious and I will certainly recommend Interlock to anybody. It was overall a very positive experience.

★★★★★
Review: August 15, 2023Completion: September 22, 2023

We have smaller bi-level forever home with a detached garage and we wanted to upgrade our roofs for both after a horrific hail storm. My husband has always dreamed of metal roofing and Interlock made it possible. The entire experience was flawless and enjoyable. They really cared about our humble abode (we tired to get quotes elsewhere for metal roofing and three other companies didn't even send back a quote as it was obvious, our home was too small a project for them), but not Interlock, I found them online after my husband had a bout of bad luck and they were on it! We are so pleased for their courtesy and little extras we received when asked. They are really a top notch company in this day and age. We are excited to be able to enjoy our beautiful roof, and to never have to worry about replacing it is priceless to us. The picture does not do it justice. Thanks to the entire team. We are grateful. **Positive: **Responsiveness, Punctuality, Quality, Professionalism

★★★★★
Review: September 20, 2010Completion: September 13, 2010

I've had a few days to get used to the look of the new roof, and I can't believe how good it looks, nothing like the metal roofs of old. It looks like slate, exactly as you said it would. Arthur (the roofer) was a real pleasure, polite, friendly and very hard working. He took great efforts to clean up any debris at the end of each day. He swept the lawn with a magnet to pick up any dropped nails and screws. He even painted any scratched paint work. I have the satisfaction of knowing that the house will never need re-roofing, which means no more old roofing for the city dump, and that the new ">roof is made from recycled materials I couldn't be more pleased with the new roof and I would recommend it to everybody. Thank you to everybody at Interlock for making it happen.

★★★★★
Review: November 5, 2006Completion: September 27, 2006

We would like to thank you and Interlock Roofing for job well done in replacing our roof. When you visited to explain your product and what a great improvement it would be to our home, we couldn’t really imagine how true this would be. We had seen other homes in our area with your product and were very impressed by the look of the roof. From the time of placing our order and having the job completed it was all within the time frame that was quoted to us. We would like to share a special thank you to Jason and Darren, our two installers, who did the job in a very professional manner. Clean up of the yard, after install was completed was also exceptional. Also we certainly appreciated the extra attention that Brad gave in following the progress of the install and his personal contact with us after the job had been completed. We would recommend Interlock and Brad to family and friends. The thing we like most about the roofing system is that it is maintenance free and we feel this has added value to our home.

★★★★★
Review: July 14, 2006Completion: June 29, 2006

Mary & I are pleased to let you know that we are delighted with our new Interlock roof and we would recommend you and the product to anyone who inquires. We have had many compliments from neighbours and strangers. The ‘weathered gray’ colour was the perfect choice for our home and the roof looks great. It fits in well with the existing pine shake roofs in Valley Ridge. I expect that the roof will outlive both of us and add to the value of our house. The installation by Jason and Darren was executed professionally by these 2 very pleasant young men.

★★★★★
Review: May 20, 1999

As I promised, here is our very belated letter following the installation of our new Interlock Roof in mid April of this year. Mark and Martin, our installers, were terrific. They were courteous and friendly and Mark took the time to answer all my questions. They cleaned up those huge mounds of old shakes completely and they left the worksite neat and tidy at the end of each day. They did a great job! As Mark told me when I complimented them, he treats each job as if he were doing it at his own home. They take pride in their work. Ted, I think these guys deserve a raise!! We are very happy with the appearance of the roof and knowing that we are worry free for the rest of our lives is a good feeling. The neighbors watched the installation with great interest as most of them also need to re-roof their houses soon. When I saw how crumbly and dry those cedar shakes were, I would say sooner, rather than later. I’m glad we did it now rather than waiting until we had either water leaking in and staining our vaulted ceiling or shingles flying off in the wind. When you are back in Calgary feel free to stop by and take your pictures; now that spring is here the yard is looking quite lovely. Call me first so I can put the coffee pot on!

★★★★★
Review: December 15, 2019Completion: April 10, 2017

I did a lot of research prior to selecting Interlock roofing. There are an abundance of good roofing material on the market but I was looking for a very long term and maintenance free product. Interlock offered an excellent product and a great warranty. Their installers showed up on time, were very professional and courteous, and did the job within the estimated time schedule and price. Before the job was even started a few things were pointed out which required some slight roof modifications and venting changes. This was explained to me in a very professional and understanding way. Any sections of underlying plywood which were not up to standard were also replaced at the agreed upon price. Before any changes were made I was shown the reason why and I gave approval prior to proceeding. I am very happy with the installation and product and would definitely endorse an installation through Interlock. I waited 3 years before writing this review because I wanted to make sure everything worked properly without any call backs.

★★★★★
Review: April 7, 2025Completion: April 9, 2025

After 25 years in our home we realized it was time to replace our roof. Asphalt shingles were always the way to go ..however, we decided to investigate other products. We have always been very interested in a tin roof but were worried it may be too shiny for our home. After thorough research we saw the Interlock product at a home show & became immediately interested in the different styles & colour choices. We set up an appointment in our home with Tyler to have Interlock view our roof line to make sure the slate style look would work. The product is strong, lightweight, tough durable & comes with a 50 year transferable warranty. We were impressed to say the least. Now that our roof is complete (Wow) thanks to the professional installation by Alexis the neighbourhood is abuzz with questions & compliments. It’s beautiful!!! & the Interlock slate style compliments our home. Thank you Tyler for all the information & support in helping us make a rewarding decision. We couldn’t be happier!

★★★★★
Review: June 4, 2024Completion: May 16, 2024

We recently had a new roof installed in Calgary. We chose the interlock system as a long term replacement and upgrade to our pine shakes which although maintained a few years ago were showing signs of significant deterioration. Our experience with the interlock office and their installers was great with no significant issues. Work was completed as per the agreed schedule and the workmanship appears to be at a high standard and we are exceptionally happy with the appearance of the new roof. The higher cost may not work for everyone but for various reasons, this was the option we selected. We would recommend Interlock to anyone interested in having a great looking roof that greatly enhances the appearance of our home and promises to provide a long term worry free roofing solution for years to come.

★★★★★
Review: July 12, 2021Completion: June 18, 2021

Overall, we are satisfied with the speed in which it was completed, and the quality of work. We are happy with the end results. They need to do better with the cleanup and to do a thorough check to make sure all things are cleaned up. We are satisfied with the quality and the speed in which it was done.

Read all Alberta metal roofing reviews →

Nearby service areas in Metro Calgary

Interlock® metal roofing is also installed in these communities near Calgary:

Metal Roofing FAQs for Homeowners in Calgary

The following metal roofing FAQs are designed specifically for homeowners in Calgary, Alberta. 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 Calgary.

How does a metal roof handle Calgary's 97 cm of annual snow and freeze-thaw cycles?

Aluminum panels shed snow efficiently because the smooth, interlocking surface prevents accumulation better than asphalt. With about 122 freeze-thaw days per year in Calgary, your roof needs material that won't absorb moisture and crack—aluminum oxide self-heals when scratched, so repeated freezing cycles don't weaken it. The four-way interlocking design resists warping under snow load, and optional snow guards keep slides controlled. Unlike wood or concrete tile, Interlock won't split, curl, or delaminate through your typical winter.

Why doesn't aluminum rust like steel roofing, and does it matter in Calgary?

Aluminum contains no iron, so it chemically cannot rust. Instead, it develops a self-healing oxide layer that protects the metal underneath—even when scratched, that layer reforms automatically. Steel roofing requires paint and sealants to prevent corrosion, which degrade over time. Interlock uses roofing-grade 3105-H24 aluminum with a Alunar 70% PVDF coating warranted 30 years against fading. In Calgary's climate, with wind gusts reaching 98 km/h that can scratch surfaces, this self-healing property means your roof stays protected without ongoing maintenance.

Does freeze-thaw damage hurt metal roofs in Calgary winters?

No. Freeze-thaw cycles harm materials that absorb water and expand when frozen—asphalt, wood, and clay tile all suffer from this. Aluminum is non-porous, so water doesn't penetrate and expand inside the material. With 122 freeze-thaw days annually in Calgary, this difference adds up: asphalt shingles curl and crack, cedar shakes split, concrete tile spalls. Interlock's aluminum won't crack, curl, or split through repeated freezing. The four-way interlocking panels also allow air circulation underneath, which prevents ice dams and moisture buildup that damage other roof types.

Is my house strong enough for a metal roof, or do I need expensive reinforcement?

You almost certainly don't. Interlock metal roofing is extraordinarily light—the Tile profile installs at just 0.59 lb/sq ft, about 96% lighter than concrete or clay tile. Most Calgary homes can handle this without structural work. In fact, Interlock installs directly over most existing roofs, so you skip the tear-off entirely. Compare this to asphalt shingles at 2-3 lb/sq ft: if your house has held asphalt for 20 years, metal is actually lighter. The ICC-ES evaluation ESR-1790 confirms Interlock meets building code (IBC/IRC) with no reinforcement on standard residential framing.

Can a metal roof withstand Calgary's wind gusts and winter storms?

Yes. Calgary experiences typical daily winds around 18 km/h, with gusts up to 98 km/h—Interlock's warranty covers wind speeds up to 120 mph (193 km/h) when installed to spec. The four-way interlocking aluminum panels lock together so tightly that wind pressure pushes the panels tighter rather than lifting them. UL 2218 Class 4 impact rating (the highest available) confirms the design's strength. Unlike asphalt shingles, which loosen and curl at the edges, Interlock's mechanical interlock system means wind can't work its way under the seams and peel the roof off.

Does Interlock handle hail, and could it lower my insurance costs?

Interlock achieves UL 2218 Class 4 impact rating—the highest available—and the Guardian Warranty even covers perforation from hailstones up to 1.5 inches. This durability often qualifies you for insurance discounts because hail damage claims drop dramatically. Calgary's ~333 mm of annual rainfall includes occasional severe hail, and asphalt shingles dent and puncture easily. Aluminum's hardness resists impact without cracking. Contact your insurer: many offer 5–15% discounts for Class 4 roofs because they know claims will be rare. Interlock's impact strength outlasts asphalt by decades.

How much can a reflective metal roof reduce cooling costs in Calgary summers?

Calgary gets about 3330 hours of sunshine per year—metal roofing with energy-efficient colors can significantly reduce cooling load. Interlock's reflective coatings achieve initial solar reflectance up to 0.55 and thermal emissivity of 0.84, meaning the roof bounces heat that asphalt absorbs and re-radiates into your home. On a sunny Calgary day, this translates to lower air-conditioning costs and less thermal stress on your attic. The Cool Roof Rating Council rates Interlock's performance. Over 30+ years, energy savings can offset the initial investment, especially if you're replacing an old dark roof.

What maintenance does a metal roof need compared to asphalt or wood?

Interlock is CALGreen-verified for reduced maintenance. Unlike asphalt, which needs sealant reapplication every 3–5 years and loses granules, or wood shakes, which need treatment for rot and insects, Interlock requires only occasional gutter cleaning and debris removal. The aluminum won't degrade, split, or curl. The Alunar 70% PVDF coating is warranted 30 years against chalking and fading (measured to ASTM D4214/D2244 standards). In Calgary's climate with 97 cm snow annually, the smooth surface sheds meltwater cleanly, so ice dams—which demand constant attention on asphalt—never form.

Is a metal roof worth the upfront cost over a standard asphalt replacement?

Over the roof's lifetime, yes. Asphalt lasts 15–25 years and requires tear-off, disposal, and reinstallation—an expensive, wasteful cycle. Interlock's Guardian Warranty is lifetime limited and non-prorated for the original owner, transferable for 50 years to the next owner, covering rusting, rotting, splitting, cracking, and curling. In Calgary, this means one installation outlasts 2–3 asphalt roofs. Your current promotion offers interest-free payments for 3 months and saves at least $2499 on installation. Factoring in energy savings, zero maintenance, and no tear-off costs, metal typically costs less per year over 40+ years.

Are metal roofs better for the environment than asphalt shingles?

Yes. Interlock aluminum is about 95% recyclable at end of life—it never becomes landfill waste. Asphalt shingles are the largest single waste stream in North American landfills because they're difficult to recycle and tear-off happens every 20 years. Over 50 years, your property would discard 2–3 asphalt roofs; Interlock stays in place and recycles as valuable aluminum. The panels manufactured in Delta, BC have been installed from coastal salt-air homes to an Antarctic research station, proving durability that eliminates the cycle of waste. Choose metal and your roof becomes a raw material, not pollution.

Is a metal roof a good choice for Calgary’s climate?

Yes. Calgary averages about 97 cm of snow, 333 mm of rain, roughly 122 freeze–thaw days a year, with peak wind gusts near 98 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.

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