Slave Lake and area · Made in Canada · Since 1999
Interlock® aluminum roofs for Slave Lake and Widewater on Lesser Slave Lake, installed by our own Alberta crews.
On Zoom or at your home, at a time that suits you. You get a fixed price in writing.
The collection
Also offered in solid copper.
Compare them side by side
The certified Interlock® roofing installer for Alberta
Manufactured at 9969 River Way, Delta, BC
GuildQuality GuildMaster Award for service excellence
Better Business Bureau rating
Baeumler Approved
Approved contractor profileBuilt for life by the forest
In May 2011 wildfire burned into Slave Lake and destroyed about a third of the town. In July 2025 a lightning fire to the northeast put the town on evacuation alert again. Winters on Lesser Slave Lake are long. Here is what an Interlock® aluminum roof can do about each, and what it can't.
2011
The 2011 fires destroyed 374 properties in the town and 59 more in the surrounding area, and more than 7,000 people fled. Insurance Bureau of Canada put insured damage at about $700 million, at the time the second costliest disaster in Canadian history.
Source: Wikipedia: 2011 Slave Lake wildfire ↗; CBC News, citing IBC ↗; MD of Lesser Slave River ↗
Class A
FireSmart Alberta warns that embers can travel long distances and land on a roof, recommends Class A roofing, advises against wood shakes and shingles, and says to clear leaves and needles off the roof regularly. We can build the roof as Class A Fire Rated Available, as a complete assembly, with two layers of GAF VersaShield® over 12 mm (15/32-inch) plywood under the aluminum. Aluminum does not burn, but no roof is fireproof.
Source: FireSmart Alberta ↗
2025
On July 20, 2025 lightning started a wildfire about 20 km northeast of Slave Lake, and the town and parts of the MD of Lesser Slave River were put on evacuation alert.
Source: Global News, 2025 ↗
Winter
Snow slides off aluminum, so snow guards go on the quote above doors and decks. Ice dams start with heat escaping into the attic; the material warranty excludes ice damming, so we check insulation and ventilation with you. Aluminum takes on no water and cannot rust through a long winter.
Permits
In town, permits are the Town of Slave Lake's; in Widewater and the rest of the countryside, the MD of Lesser Slave River's. Whether a re-roof needs one depends on the work, so we confirm it for your address.
Town of Slave Lake, a town since 1965, on the southeast shore of Lesser Slave Lake. Wikipedia ↗
The MD of Lesser Slave River No. 124, which includes the hamlet of Widewater. Wikipedia ↗
About 255 km northwest of Edmonton, where Highways 2 and 88 meet. Wikipedia ↗
374 properties destroyed in town and 59 in the surrounding area. Wikipedia ↗
Our own crews. Our only office is in Calgary, at 210, 3750 46 Ave SE; there is no northern or Edmonton-area office, so consultations are on Zoom or at your home.
Product figures are the manufacturer's: interlockroofing.com ↗
Homes and beyond
The same interlocking aluminum system goes on a family home, a condo or townhouse complex, or a church. We install it across Alberta on:
Antarctica · U.S. National Science Foundation
Interlock® standing seam roofing and Black Diamond siding on six SPOT modules that travel between McMurdo Station and the South Pole, in −51 °C and winds up to 161 km/h. More than 32,000 completed Interlock® roofs across Canada and the USA, and these at the bottom of the world.
The Antarctica project ↗Interlock roofs in Alberta
Tap a roof to see every photo full screen. Save the ones you like, send them to family, or pick two to four to compare side by side.
Cedar ShingleSylvan Lake, Alberta · August 2026
Cedar ShingleGrande Prairie, Alberta · May 2026
Cedar ShingleThree Hills, Alberta · October 2025
ShakeWaterton Park, Alberta · August 2025
SlateCalgary, Alberta · August 2025
SlateLeduc, Alberta · May 2025
SlateCalgary, Alberta · May 2025
SlateCalgary, Alberta · May 2025
Cedar ShingleLacombe County, Alberta · May 2025
In their own words
★★★★★
“I like the look of the finished product, however it is too early to give an honest opinion until we have been through a couple of winters.”
Helen and Raymond E. · Crooked Creek · 2026
★★★★★
“Good bunch of guys on this project. Enjoyed working with them.”
Harvey Tetzlaff and Hope T. · Warner · 2026
★★★★★
“Luis was excellent. He should up with a great attitude and ready to take care of our problems. I would definitely recommend Luis for everyone.”
Sean M. · Calgary · 2026
★★★★★
“Excellent product. Excellent install. Excellent value. Thank you Interlock Metal Roofing!”
Jeff J. · Crossfield · 2026
See this roof 1 photo · Deep Charcoal Cedar Shingle★★★★★
“My project required significant smart venting and the sales rep was very resourceful in assessing the home and the smart venting needs”
Nick and Fatima V. · Airdrie · 2025
★★★★★
“They're wonderful. They have been very safety conscious, they have provided excellent work, they displayed excellent work ethics, and they were extremely careful about how to work within the property. Very prompt and very professional.”
Jalees Razavi and Birsen R. · Calgary · 2025
See this roof 9 photos · Deep Charcoal Slate★★★★★
“Communication on the start date could be improved. We are happy with our roof. Looking forward to the durability of the product.”
Chad and Kayanne T. · Cochrane · 2025
See this roof 2 photos · Black Cedar Shingle★★★★★
“They accommodated all our concerns. Job was completed in a timely manner, and the installers were very experienced.”
Chris and Kerri B. · Medicine Hat · 2025
★★★★★
“Great product, looks awesome lots of compliments on it. Great experience from the sales team to the installation team. Would definitely recommend this product.”
Dave M. · Red Deer · 2025
See this roof 1 photo · Tile Red Slate★★★★★
“This company gives excellent service! Both Kevin and Brittany were awesome and professional to deal with. Highly recommend this company!”
Ed M. · Calgary · 2025
★★★★★
“David Thomas was a total professional. Was extremely helpful and informative. Always available if you had any questions. The men working on the roof were all super nice and true pros.”
Ross T. · Calgary · 2025
★★★★★
“I’ve had this roof for a couple years now. It’s been great. Get lots of compliments on it.”
Bruce R. · Fort McMurray · 2025
See this roof 1 photo · Deep Charcoal Slate★★★★★
“Great product-10 years later, still love it! (Completion Date: 2012-05-28)”
Dennis G. · Pelican Narrows · 2025
★★★★★
“Awesome service and new roof that looked like it is now armour plated.”
Glenn S. · Lethbridge · 2024
★★★★★
“Pleasant workers who were willing to tell us the steps they were going through. Cleaned up after themselves.”
Ken and Kathy S. · Rimbey · 2026
★★★★★
“I wish the project was cheper, but you get what you pay for, so I am happy.”
Kelly and Carolynn T. · Norglenwold · 2026
★★★★★
“We recently installed a new Interlock Roofing System, and we couldn’t be happier with the decision. Knowing it’s backed by a limited lifetime, non-prorated, fully transferable 50-year warranty gives us real peace of mind.”
Denis D. · St. Paul · 2026
★★★★★
“Everything was handled very professionally. Nothing comes to mind. None”
Wayne and Liz P. · Westlock · 2026
★★★★★
“My project was a new build. I thought it could've been completed sooner, but they were waiting for other people to do their jobs which is something I believe Interlock Metal Roofing can improve on. It was done okay though.”
Stuart D. · Bassano · 2025
★★★★★
“We appreciated the sales person Bryan making adjustments so we could afford this product. In the end it worked out for your company because we did the shop as well. The installers did an excellent job. not that i can think of”
Kevin and Wendy C. · Blairmore · 2025
★★★★★
“Luis was very good to work with. Installed snow guards very quickly after we requested the work. Great roof!”
Sarah B. · Calgary · 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.”
Jalees R. · Calgary · 2025
See this roof 9 photos · Deep Charcoal Slate★★★★★
“So very impressed with the total package.. the product,sales person Tyler.. and the working crew.. this metal roof gave our house a very European flavour…. Excellent…!!!!!!!!”
Claire M. · Calgary · 2025
★★★★★
“The guys that installed the roof were very nice, friendly and very professional. Got it done in a few days. Would recommend.”
Meghan R. · Red Deer · 2025
See this roof 1 photo · Deep Charcoal Slate★★★★★
“Nice guys friendly. Inspected roof and resolved concern immediately.”
Rick C. · St. Albert · 2025
★★★★★
“Such a hard working crew, did a beautiful job on our very complex roof. Worked like troopers 12 hours a day, we're very courteous and thorough. Highly highly recommend!”
Don S. · Wildwood · 2025
See this roof 1 photo · Black Slate★★★★★
“Absolutely wonderful. Professional courteousand clean. Across the street got their roof done in asphalt shingles it took longer and was way messier then ours.”
Heather M. · Medicine Hat · 2025
★★★★★
“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.”
Greg M. · Calgary · 2024
Slave Lake roofing profiles: slate, cedar shingle, shake, Mediterranean tile, standing seam & solid copper
The look belongs to your home. The performance belongs to the metal. Every profile needs a minimum 3/12 roof slope.
A composed silhouette
The formal character of slate at a fraction of the weight, in aluminum that cannot rust.
Familiar warmth
The look of a cedar roof, with nothing to rot, split or take on water in the grain.
Deep shadow lines
Hand-split texture and depth: the usual replacement when a cedar shake roof has had its last re-treatment.
Sculpted, not heavy
The barrel-tile silhouette without the weight of concrete or clay.
Clean lines
Clean vertical lines for a modern home or a cabin, in the same aluminum.
A living metal
Copper weathers over time. Usually a bay, a porch or a turret rather than a whole house.
Where we've worked
Slave Lake roofing from Interlock Metal Roofing (Alberta) Ltd., the certified Interlock® installer for Alberta. Our list here is short: roofs in the Town of Slave Lake and in Widewater, the hamlet on Highway 2 overlooking Lesser Slave Lake. Each was installed by our own crews, and the panels are made in Canada at the Interlock plant in Delta, BC. We have no office in the north or the Edmonton area: consultations are on Zoom or at your home.
Completed Interlock® roofs in Slave Lake and Widewater, from our job book. A short list, and every entry is real.
1,633 completed roofs
Calgary, Lethbridge, Red Deer, Medicine Hat, Rocky Mountain House, Airdrie
calgarymetalroofing.com ↗1,472 completed roofs
Edmonton, Sherwood Park, Spruce Grove, St. Albert, Grande Prairie, Fort McMurray
edmontonmetalroofing.com ↗One Alberta company serves Slave Lake and Widewater, with its own crews and one office, in Calgary. Beyond Slave Lake and Widewater: edmontonmetalroofing.com for Edmonton & Northern Alberta, same company and warranties. Not sure which one your address falls in? Ask us.
The project map
Every pin is a real, completed Interlock® roof with its profile, colour and install year. Zoom in on your street.
Why Slave Lake homeowners choose aluminum
Our crews
Interlock Metal Roofing (Alberta) Ltd. installs every roof with its own crews. The company that quotes your Slave Lake roof puts it on and answers for the labour warranty.
Slate
Nearly every Slave Lake roof in our job book is Slate. Shake, Cedar Shingle, Mediterranean Tile and Standing Seam are also made, in nine colours; each needs a slope of at least 3/12.
Weight
The panels weigh roughly 2 to 3.5 kg per square metre, a fraction of concrete tile. We inspect the rafters and decking and write any repair into the quote.
Tear-off
Cedar shingles and shakes always come off before an Interlock roof goes on, as do concrete tile and natural slate. One layer of asphalt can stay only if the inspection finds it suitable.
Warranties
Interlock Roofing's Guardian Lifetime Limited Material Warranty covers the aluminum and its finish while the original purchaser owns the home, transferable once, workmanship excluded. Our 10 Year Limited Labour Warranty covers the installation.
Canada
Interlock Roofing makes the panels in Delta, BC; an Alberta company, Canadian owned and operated since 1999, installs them.
Recycled
And the last tear-off your house is likely to need.
The metallurgy, coatings and test reports are the manufacturer's to explain: interlockroofing.com ↗
Every Interlock® panel we install is manufactured in Canada by Interlock Roofing at its plant at 9969 River Way in Delta, BC.
Interlock Metal Roofing (Alberta) Ltd. was founded in 1999 and is based in Calgary, with one office serving Calgary, Edmonton and the rest of Alberta. Canadian owned and operated for 27 years.
The roof is made in Canada and installed in Alberta by our own company. It never crosses a border on its way to your home.
Upcoming shows
Lift a panel, feel the weight, see every colour in daylight and ask the people who install it. Come find us at a show near you.
We do. Interlock Metal Roofing (Alberta) Ltd., the certified Interlock® roofing contractor for Alberta since 1999, installs every Slave Lake roof with its own crews. Our only office is in Calgary; there is no northern or Edmonton-area office, so the consultation is on Zoom or at your home. We are BBB Accredited with an A+ rating, Baeumler Approved, and a 2026 GuildQuality GuildMaster Award winner.
It depends on the work. In town, permits are the Town of Slave Lake's; in Widewater and the countryside, the MD of Lesser Slave River's. Structural repairs such as rebuilt decking are the usual reason a permit is needed. We confirm it for your address before we start.
No roof is fireproof. FireSmart Alberta recommends Class A roofing and advises against wood shakes and shingles. Our roofs can be built as Class A Fire Rated Available, as a complete assembly, with two layers of GAF VersaShield® over 12 mm (15/32-inch) plywood. Aluminum does not burn, and FireSmart's advice covers the whole property, not just the roof.
Well, but no roof is immune to hail. Interlock's Slate, Shake, Cedar Shingle and Mediterranean Tile aluminum panels carry a UL 2218 Class 4 impact rating, listed by Intertek under Delta Building Products, and wind resistance is warranted to 193 km/h (120 mph) installed to manufacturer specification. The material warranty excludes hail larger than 38 mm (1.5 in), so storm damage is a matter for your home insurance.
The Town of Slave Lake and the hamlet of Widewater. The rest of Northern Alberta is on edmontonmetalroofing.com: the same company, crews and warranties.
Our cost page shows real contract prices from Interlock® roofs signed in the Edmonton and Northern Alberta market in 2025 and 2026. They are a rough guide only: prices vary from job to job with structural and other conditions, and an in-home roof consultation is required for an accurate price. The consultation and the written quote are free.
Free, no obligation
A free consultation on Zoom or at your home: we go through profiles and colours with you, measure the roof, and give you a fixed price in writing. No pressure, and an honest date for the install.
Interlock Metal Roofing (Alberta) Ltd. · 210, 3750 46 Ave SE, Calgary, AB
Lifetime refers to the manufacturer's Guardian Lifetime Limited Material Warranty: material and finish, for as long as the original purchaser owns the home, transferable once, workmanship excluded. Warranty details
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