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. 10 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
10 completed
From our job book, the first in 2005.
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 Penticton, Kaleden and Okanagan Falls first, then elsewhere in BC. Tap a roof to see all of its photos.
Musket Grey Shake · Summerland, BC
Deep Charcoal Slate · Anglemont, BC
Black Slate · Sooke, BC · 5 photos
Deep Charcoal Shake · Whistler, BC
Deep Charcoal Slate · Nanoose Bay, BC
Deep Charcoal Slate · Sechelt, BC · 4 photos
Copper Penny Slate · Ladysmith, BC · 4 photos
Colonial Brown Slate · Shawnigan Lake, BC · 6 photos
Why aluminum, for a roof in BC
Long, hot summers
At Penticton Regional Airport the average July high is 29.2 °C (1991–2020 climate normals), and the record is 44.2 °C, set on June 30, 2021. A roof here spends months in hard sun. Aluminum has no asphalt to dry out and no granules to wash into the gutters, and it cannot rust.
A city with a wildfire history
FireSmart BC notes Penticton's history of frequent wildfires, including the 1994 Garnet fire and the 2020 Mt. Christie fire, and new neighbourhoods reaching into the wildland-urban interface. Our fire rating is Class A Fire Rated Available, as a complete assembly, and aluminum itself does not ignite. No roof is fireproof: embers still reach gutters and vents, so we go over those with you.
Not much snow, but some
The airport averages 61.6 cm of snow a year in the same normals. On a metal roof that snow does not sit and melt; it slides off in one go. So we mark the spots over steps, decks and driveways where snow guards belong when we draw up the estimate.
A light roof on the rafters
Interlock® panels weigh roughly 2 to 3.5 kg per m², a fraction of what cedar shakes or concrete tile weigh. When we look at a house in Penticton, Kaleden or Okanagan Falls, the old roof and the framing under it are part of the estimate. Interlock® Shake and Interlock® Cedar Shingle keep the look of wood without the wood.
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
10 completed Interlock® roofs across British Columbia in our job book, the first in 2005.
Penticton 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 Penticton 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
