Vancouver Island · British Columbia · Made in Canada
Duncan metal roofing
33 Interlock® aluminum roofs installed in Duncan since 1998, by Interlock Metal Roofing (BC) Ltd. One system, made in Canada in Delta, with a fixed price in writing.
- Roofs in Duncan
- 33
- First Duncan roof
- 1998
- Since 2020
- 9
- Most chosen
- Slate
From our job book: completed, published jobs. 28 years of Duncan roofs.
Metal roofing in Duncan: what homeowners choose
Interlock® profiles on Duncan homes in our job book.
Slate
18 roofsCedar Shingle
7 roofsShake
2 roofsStanding Seam
2 roofs
Most common colours in Duncan: Black, Charcoal Grey, Deep Charcoal, Colonial Brown.
Every Duncan roof on the map
Each pin is a completed Interlock® roof with its profile, colour and install year.
Duncan roofs we've installed

Tudor Brown Slate · Duncan, BC · 6 photos 
Deep Charcoal Slate · Duncan, BC 
Black Slate · Duncan, BC · 3 photos
What Duncan homeowners say
“Fantastic service from the install team! Perfect precision in every shingle - We have done two houses with Interlock - we would strongly recommend them anytime!”
See this roof 6 photos · Tudor Brown Slate“Until corrective action was taken by management, some employees did construction work they were not qualified to do.”
“We would have appreciated it if Interlock Roofing could have gotten to our roof faster. When they did make it out, it ended up there was only one installer that did 99% of the work, and it could have been done much quicker had they had a full installation crew. The installer was excellent.”
“Final cleanup needs to be double checked, Before the customer finds gutters full of old roofing and metal! Also communication should be made by head office to ensure a project starts on time and Always if there is any change in scheduling..”
“Believe the aluminum roofing system is very high quality”
“The initial pricing was quite high. I found the product quite pricey.”
Roofing in Duncan: what to plan for
Rain from the west coast to the east
The Island ranges from very wet on the west side, around Port Alberni and Sproat Lake, to drier around Victoria, but most roofs here spend the winter damp under firs and cedars. Aluminum absorbs nothing and cannot rot. Needles still collect in valleys and gutters, and we'll tell you what to clear and how often.
Oceanfront without the rust
From Oak Bay and Sooke to Nanoose Bay and Comox, a lot of Island homes sit close to the water. Aluminum does not rust, so salt air doesn't do to it what it does to steel.
Comox Valley and upland snow
Some winters bring heavy, wet snow to the Comox Valley and the higher ground. A metal roof sheds it, so snow guards over entries, decks and driveways go in at the estimate, and the light panels leave the framing's capacity for the snow itself.
Homes in the trees
Plenty of Island homes back onto forest. Class A is available on our roofs as a complete assembly (two layers of GAF VersaShield® over 12 mm (15/32-inch) plywood, per ASTM E108), and aluminum does not ignite.
Duncan metal roofing questions
How many roofs has Interlock installed in Duncan?
33 completed Interlock® roofs in Duncan are recorded in our job book, the first in 1998 and 9 of them since 2020.
Which roof profile do Duncan homeowners choose most?
Slate. In Duncan the profiles on our books are Slate (18), Cedar Shingle (7), Shake (2), Standing Seam (2). The most common colours are Black, Charcoal Grey, Deep Charcoal.
Who installs Interlock roofs in Duncan?
Interlock Metal Roofing (BC) Ltd., a Canadian owned and operated BC company founded in 1983, from our office at 9969 River Way, Delta. The panels are made in Canada by Interlock Roofing at the same address.
How do I get a price for a roof in Duncan?
Book a free visit. We measure the roof, go through profiles and colours with you, and give you a fixed price in writing. Call (778) 745-2860 or use the quote form.
Hiring anyone for a Duncan roof? Six checks to make sure a roofer is really local to BC →
Your last Duncan roof, priced in writing.
Interlock Metal Roofing (BC) Ltd. · 9969 River Way, Delta, BC V4G 1M8