British Columbia · Aluminum roofing · Made in Canada
Aluminum roofing in BC
We install Interlock® aluminum roofs on homes, cabins and strata complexes across British Columbia: interlocking panels that don't rust, locked on four sides with the fasteners out of the weather. 45 completed so far, made in Canada in Delta, priced in writing after one visit on Zoom or at your home.
Reviewed by Scott Plumptree, Director of Marketing, The Interlock Group · Updated October 8, 2026
Consultations on Zoom or at your home. Book a Zoom consultation
Roofs here
45 completed
From our job book, the first in 2002.
The metal
Aluminum doesn't rust
An oxide film protects it; there's no steel inside to corrode.
The warranty
Guardian Lifetime Limited Material Warranty
Material and finish, original purchaser, transferable once.
What an Interlock® aluminum roof is
An Interlock® roof is made of interlocking aluminum panels, each locked to its neighbours on all four sides with the fasteners concealed under the panel above. Nothing is screwed through the weather surface. The panels are stamped to look like slate, cedar shingle, shake or tile, or rolled as standing seam.
The panels are made in Canada by Interlock Roofing at its plant in Delta, BC. Across British Columbia they are installed by our own company, Interlock Metal Roofing (BC) Ltd., a Canadian owned and operated BC company founded in 1983, from the same Delta address.
Aluminum roofs we've installed in BC
Recent Interlock® roofs installed by our own BC company in Kelowna, West Kelowna and Lake Country. Tap a roof to see all of its photos.
Deep Charcoal Slate · Kelowna, BC · 3 photos
Tudor Brown Cedar Shingle · West Kelowna, BC · 3 photos
Deep Charcoal Slate · West Kelowna, BC
Deep Charcoal Slate · Kelowna, BC
Black Slate · Kelowna, BC · 2 photos
Deep Charcoal Slate · West Kelowna, BC · 7 photos
Deep Charcoal Slate · West Kelowna, BC · 4 photos
Deep Charcoal Slate · Kelowna, BC
Why aluminum, for a roof in BC
Two fire seasons the valley remembers
Lightning started the 2003 Okanagan Mountain Park fire, which burned 25,912 hectares and destroyed 239 homes. In August 2023 the McDougall Creek fire destroyed 70 homes in West Kelowna, three in Kelowna and two in Lake Country. On our roofs, Class A Fire Rated is available, as a complete assembly, and the aluminum itself does not ignite. No roof is fireproof, so we check gutters and vents with you as well.
Little rain, long summers
Kelowna International Airport records only 386.9 mm of precipitation in an average year (1981–2010 normals), and its record high is 45.7 °C. Long, dry summers are hard on roofs made of wood or asphalt. Heavy-gauge aluminum has neither, so there is nothing on the roof to dry out, crack or split in the sun.
Winter on the hillside streets
The airport station also averages 89.0 cm of snow a year. Snow comes off a metal roof quickly, which matters on the sloped lots of Dilworth Mountain, Black Mountain and Glenrosa, where a driveway or deck often sits right below the eaves. We mark where snow guards go when we measure the roof, so they are part of the price from the start.
Wind that carried fire across the lake
High winds made the McDougall Creek fire expand rapidly, and on the night of August 17, 2023 it jumped Okanagan Lake, starting new fires near Glenmore Highlands and Okanagan Centre. Interlock® panels lock on four sides and are warranted to 193 km/h (120 mph) installed to manufacturer specification. On exposed lakeside and hilltop lots we give the ridge, eaves and flashings extra care.
The profiles, and what homeowners in BC choose
Five aluminum profiles: Slate (the most popular), Cedar Shingle, Shake, Mediterranean Tile and Standing Seam, plus solid copper for bays, porches and accents. Every profile needs a minimum 3/12 slope.
In our job book the most common profiles across British Columbia are Slate (1,095), Cedar Shingle (458), Shake (325).
What's covered, in writing
- Guardian Lifetime Limited Material Warranty, from the manufacturer: material and finish, for as long as the original purchaser owns the home, transferable once. Workmanship is excluded, and ice damming is a stated exclusion.
- 30 Year Alunar® Coating Warranty on the finish.
- Wind resistance warranted to 193 km/h (120 mph) installed to manufacturer specification.
- Class A Fire Rated Available, as a complete assembly: two layers of GAF VersaShield® over 12 mm (15/32-inch) plywood, per ASTM E108.
How a roof gets done
| Step | What happens |
|---|---|
| 1. Consultation | On Zoom (most BC homeowners choose it) or at your home. We go through profiles and colours, look at photos of roofs like yours, and answer questions. |
| 2. Measure and inspect | We measure the roof and check what's on it now. Cedar, concrete tile and natural slate always come off; a single layer of asphalt can be roofed over only if the inspection finds it suitable. |
| 3. Fixed price in writing | Anything the inspection finds goes into the written quote before you sign, not into a change order later. Strata roofs: we bring the documents the council will ask for. |
| 4. Installation | Our own BC installers, to the manufacturer's specification, with flashing, ventilation and snow guards as planned. |
| 5. Warranty registered | The Guardian material warranty, with our BC service team after the job. |
Where we work
45 completed Interlock® roofs across British Columbia in our job book, the first in 2002.
Kelowna questions, answered
Who installs aluminum roofing in BC?
Interlock Metal Roofing (BC) Ltd. installs the Interlock® aluminum roofing system in BC from its office at 9969 River Way, Delta, the same address as the plant that makes the panels. The company was founded in 1983 and installs every roof itself. Call (778) 745-2860.
Is aluminum roofing good for British Columbia?
Aluminum doesn't rust, absorbs no water and cannot rot, so rain, moss and salt air have nothing to work on, and its smooth surface sheds snow. Valleys and gutters still need clearing of needles and leaves, and ice damming is a stated exclusion of the material warranty, so we look at ventilation with you.
Is an aluminum roof better than a steel roof?
They are both metal roofs, but steel depends on its zinc or aluminum-zinc coating to keep from rusting, and aluminum has no steel to rust. Aluminum is also about a third the weight. Steel roofing usually costs less up front. Our steel vs aluminum guide sets out the differences.
How much does an aluminum roof cost in BC?
It depends on the roof's area, pitch and complexity, what comes off, the profile and options such as the Class A assembly. Our metal roof cost guide shows real price ranges from our own BC contracts, and we give your fixed price in writing after one free visit.
Can an aluminum roof go over my asphalt shingles?
Sometimes: a single layer of asphalt can be roofed over only if our inspection finds it suitable. Cedar shakes, concrete tile and natural slate always come off first.
Can the consultation be done on Zoom?
Yes, and most BC homeowners choose it: we go through the roof, the profiles and the colours with you on screen. Book online or call (778) 745-2860.
How long does an aluminum roof last?
Aluminum has been known to last over 100 years. That is a property of the metal, not a promise; what is in writing is the Guardian Lifetime Limited Material Warranty and the 30 Year Alunar® Coating Warranty.
Sources for this Kelowna guide
- J.R. Davis, "Aluminum and Aluminum Alloys", Alloying: Understanding the Basics, ASM International (2001)
- Interlock Roofing: aluminum shingles, technical specifications
- FireSmart BC Homeowner's Manual
- Guardian Lifetime Limited Material Warranty (full terms)
Product specifications are the manufacturer's (Interlock Roofing). Install counts are from our own job book. Reviewed by Scott Plumptree, October 8, 2026.
Get your aluminum roof priced.
A fixed price in writing after one visit, on Zoom or at your home. Most BC homeowners choose Zoom. Interlock Metal Roofing (BC) Ltd. · 9969 River Way, Delta, BC V4G 1M8
