British Columbia · Aluminum shingles
Aluminum shingles in BC
Aluminum shingles are stamped aluminum roofing panels that don't rust, because there is no steel inside them. Interlock® aluminum shingles interlock on all four sides with the fasteners concealed, are made in Canada in Delta, BC, and are installed across British Columbia by our own company.
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
Thickness
0.019 in (0.483 mm)
Aluminum alloy per ASTM B209 (manufacturer).
Weight
Roughly 2 to 3.5 kg/m²
A fraction of concrete tile or natural slate.
Finish
30 Year Alunar® Coating Warranty
Five-layer fluorocarbon finish.
What makes an aluminum shingle different
An aluminum shingle is a stamped aluminum panel with a baked finish. Unlike a steel shingle, there is no steel core under the finish, so there is nothing to rust if the finish is scratched or cut. The exposed aluminum forms an oxide film that blocks further oxidation (ASM International).
Interlock® aluminum shingles lock to each other on all four sides. The fasteners sit under the course above, out of the weather, so the roof has no exposed screw heads and no rubber washers to age.
Specifications
| Item | Specification |
|---|---|
| Base metal | Aluminum alloy per ASTM B209: 3105-H24 (Slate, Cedar Shingle); 3003-H24 (Shake, Mediterranean Tile, Standing Seam) |
| Thickness | 0.019 in (0.483 mm) nominal base thickness |
| Weight | Roughly 2 to 3.5 kg per square metre, depending on profile |
| Finish | Alunar® five-layer fluorocarbon (PVDF) coating; 30 Year Alunar® Coating Warranty |
| Wind | Warranted to 193 km/h (120 mph) installed to manufacturer specification |
| Fire | Class A Fire Rated Available, as a complete assembly (two layers of GAF VersaShield® over 12 mm (15/32-inch) plywood, per ASTM E108) |
| Minimum slope | 3/12 |
| Material warranty | Guardian Lifetime Limited Material Warranty: material and finish, for as long as the original purchaser owns the home, transferable once |
| Made | In Canada, by Interlock Roofing, Delta, BC |
Source: Interlock Roofing technical specifications. Read the full warranty terms before you sign.
Aluminum shingles in BC
Recent Interlock® roofs installed by our own BC company, in Naramata 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
Profiles and colours
Slate is the most popular profile. Cedar Shingle and Shake give a wood look without rot or splitting; Mediterranean Tile suits Spanish and Italianate homes, and Standing Seam a modern or West Coast contemporary roof. Colour samples come to the consultation, or we show them on Zoom.
On homes across British Columbia in our job book: Slate 1,095, Cedar Shingle 458, Shake 325, Mediterranean Tile 171, Standing Seam 116.
Aluminum shingles in BC
About 330 mm of precipitation a year
The Naramata climate table on Wikipedia, from Environment Canada's 1971–2000 normals, shows 330 mm of precipitation a year and an average July high of 27.0 °C. With so little rain, sun is what wears a roof out here. Aluminum shingles carry no asphalt or wood fibre for the sun to break down.
Homes against the hillside
Naramata, RDOS Electoral Area E, is part of the Regional District's Community Wildfire Resiliency Plan work, with public sessions held in 2025. Aluminum does not ignite, and the roof is Class A Fire Rated Available, as a complete assembly. No roof is fireproof; we look at gutters and vents with you, because that is where embers settle.
Orchards, vineyards and a farm landscape
Much of Naramata lies in the Agricultural Land Reserve, and the bench has moved from tree fruit to vineyards and wineries. Interlock® Standing Seam suits a barn or shop roof; Interlock® Cedar Shingle and Interlock® Shake keep a wood look on the house.
No trip needed for the first meeting
Our only office is in Delta, at the Interlock plant, and we have none in the Okanagan. About three in four of our BC roof consultations happen on Zoom: you walk us around the house on your phone and we go through profiles, colours and the roof itself. If you would rather meet in person, we come to your home.
Questions, answered
What are aluminum shingles?
Aluminum shingles are roofing panels stamped from aluminum sheet and finished with a baked coating, made to look like slate, cedar shingle, shake or tile. Interlock® aluminum shingles interlock on all four sides with concealed fasteners.
Do aluminum shingles rust?
No. Aluminum forms a thin oxide film that blocks further oxidation, and there is no steel inside an aluminum shingle to rust, which is why they suit homes near salt water.
Are aluminum shingles better than steel shingles?
Aluminum doesn't rust and is about one-third the density of steel. Steel shingles usually cost less up front and depend on their zinc or aluminum-zinc coating to keep from rusting. Aluminum can dent under large hail.
How thick are Interlock aluminum shingles?
0.019 in (0.483 mm) nominal base thickness, aluminum alloy per ASTM B209, according to the manufacturer's specification.
Where can I get aluminum shingles installed in BC?
Interlock Metal Roofing (BC) Ltd. installs Interlock® aluminum shingles across British Columbia, with 2 roofs completed. The panels are made in Delta, BC. Call (778) 745-2860 or book a consultation on Zoom.
Can aluminum shingles be installed over asphalt?
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.
Do aluminum shingles help with moss?
Aluminum absorbs no water and cannot rot, so moss has nothing to root into the way it does in cedar or between asphalt granules. Needles and leaves still collect in valleys and gutters on a shaded roof, so keep those clear.
Sources
- Interlock Roofing: aluminum shingles, technical specifications
- J.R. Davis, "Aluminum and Aluminum Alloys", Alloying: Understanding the Basics, ASM International (2001)
- 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 aluminum shingles 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
