The Gulf Islands' Best Roof® · Made in Canada · Since 1983
The certified Interlock® roofing contractor for the Gulf Islands.
On Zoom or at your home, at a time that suits you. Most homeowners choose Zoom. You get a fixed price in writing.
The collection
Also offered in solid copper.
Compare them side by side
The Interlock® Lifetime Roofing System installer for British Columbia
Manufactured at 9969 River Way, Delta, BC
GuildQuality GuildMaster Award for service excellence
Better Business Bureau rating
Baeumler Approved
Approved contractor profileBuilt for British Columbia
BC is a coastline, a rainforest, a snow belt and a fire zone, sometimes on the same drive. Here is what an Interlock® aluminum roof does about each.
Salt air
There is no iron in aluminum, so there is nothing to rust. It forms its own thin oxide layer, which re-forms if the surface is scratched. That is why it is the metal for oceanfront homes, island cabins and anywhere the wind carries salt.
Wildfire
Under ASTM E108 a fire classification belongs to an assembly, not a panel. On our roofs Class A is achieved with two layers of GAF VersaShield® over 12 mm (15/32-inch) plywood, and the aluminum itself does not ignite. Ask us to quote the assembly if your home backs onto forest or grassland.
Reflectance
Most Alunar® colours are rated by the Cool Roof Rating Council (CRRC), which publishes each colour's solar reflectance (0.25 to 0.44 when new) and thermal emittance (0.83 to 0.86). Lighter and metallic colours reflect more. The Alunar® finish is warranted for 30 years.
Energy
Lighter colours absorb less summer sun than dark ones. What that saves depends on climate, colour, insulation and attic ventilation, so we don't quote a figure.
Solar
A solar array lasts 25 to 30 years. Put it on an asphalt roof and the panels often have to come off and go back on when the roof wears out underneath them. On an Interlock roof they come off at the end of their own life, not the roof's. Standing Seam takes clamp mounts with no holes drilled; the other profiles use mounting hardware made for metal roofing. At roughly 2 to 3.5 kg per square metre the roof leaves more of the structure's capacity for the array, and your solar installer confirms the framing.
Wind
Interlock panels lock to each other on all four sides, with no exposed fastener for a storm to work at. Wind resistance is warranted to 193 km/h (120 mph) installed to manufacturer specification.
Months of rain, moss, character homes, strata councils and more homes going solar every year.
Nothing in an aluminum panel for moss to root in or water to rot. Cedar softens and asphalt granules trap the debris moss grows in.
The look of cedar shake or slate on an older house, at a fraction of the weight, and paperwork strata councils can approve.
Put the panels up once. The roof under them outlives the array.
From White Rock to West Vancouver: aluminum cannot rust in salt air.
Local sites: vancouverroofing.com · surreyroofing.com · northvancouverroofing.com
Mountain snow, wet storms off Howe Sound, and homes that back onto forest.
At roughly 2 to 3.5 kg per square metre, the roof leaves the framing's capacity for what it is really there for in Squamish and Whistler: snow.
Class A Fire Rated Available, as a complete assembly, for homes in the wildland-urban interface.
Panels locked on four sides; wind warranted to 193 km/h installed to manufacturer specification.
We plan snow guards over entries, walkways and the driveway at the quote.
Local site: roofbc.com/sea-to-sky
Wet winters, hot summers, outflow wind in a cold snap, and acreages with more than one roof.
Lighter colours reflect more of the summer sun; how much that saves depends on climate, colour, insulation and ventilation.
Panels locked on four sides; wind warranted to 193 km/h installed to manufacturer specification.
One profile and colour across every building on the property.
Class A Fire Rated Available, as a complete assembly.
Local site: fraservalleyroofing.com
Salt air, Pacific storms, rain on the west coast, dry summers on the Gulf Islands.
Oceanfront without the rust: aluminum cannot rust.
Panels locked on four sides; wind warranted to 193 km/h installed to manufacturer specification.
Class A Fire Rated Available, as a complete assembly, for homes in the trees.
Nothing in an aluminum panel for moss to root in or water to rot.
Local sites: victoriametalroofing.com · vancouverislandroofing.com · gulfislandsroofing.com (you are here)
A wet coast under tall trees, waterfront cabins, and forest on every side.
Nothing in an aluminum panel for moss to root in or water to rot.
Aluminum cannot rust in salt air.
Class A Fire Rated Available, as a complete assembly.
Put the panels up once. The roof under them outlives the array.
Local site: sunshinecoastroofing.com
Hot, dry summers, fire season, long sunny days and real winters.
CRRC-rated solar reflectance from 0.25 to 0.44 by colour; the Alunar® finish is warranted for 30 years.
Class A Fire Rated Available, as a complete assembly; aluminum does not ignite.
The roof outlasts the array, so the panels go up once. Standing Seam takes clamp mounts with no holes drilled.
Light on the framing under snow, with snow guards planned at the quote.
Local site: okanaganroofing.com
Hard sun, hot summers, grassland fire, and cold snaps with snow.
Lighter colours reflect more of the summer sun; how much that saves depends on climate, colour, insulation and ventilation.
Class A Fire Rated Available, as a complete assembly.
Put the panels up once, on a roof that outlives them.
Panels locked on four sides; light on the framing under snow.
Local site: kamloopsroofing.com
Coastline: Province of British Columbia, Coastal Marine Strategy ↗ gives "more than 26,000 kilometres"; federal mapping gives 25,725 km. Product figures are the manufacturer's: interlockroofing.com ↗
Homes and beyond
The same interlocking aluminum system goes on a family home, a strata complex or a church. We install it across British Columbia 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 ↗Recent roofs on the Gulf Islands, plus more across BC
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.
SlateGabriola Island, BC · September 2023
Cedar ShingleSalt Spring Island, BC · April 2019
ShakeSummerland, BC · April 2026
SlateAnglemont, BC · December 2025
SlateSooke, BC · October 2025
SlateNanoose Bay, BC · August 2025
SlateSechelt, BC · June 2025
SlateLadysmith, BC · June 2025
SlateShawnigan Lake, BC · April 2025
On video
Filmed on Interlock® roofs in British Columbia. Sound and English captions are in the player.
Nanoose Bay, BC · 6:14
An Interlock® aluminum slate roof in Charcoal on a waterfront home in Nanoose Bay, on the east coast of Vancouver Island. Aluminum cannot rust, which is why it suits salt air.
Lake Country, BC · 2:01
An Interlock® aluminum slate roof in Black on a home in Lake Country, in the Okanagan. Aluminum does not ignite. Class A Fire Rated Available, as a complete assembly.
West Vancouver, BC · 2:56
An Interlock® aluminum slate roof in Tudor Brown on a home in West Vancouver: the look of natural slate in light, interlocking aluminum panels.
As seen on TV
The Gulf Islands' Best Roof® is part of Canada's Best Roof®: the same Interlock® roof, made in Delta, BC, and installed here by our own BC company.
Canada's Best Roof® at interlockroofing.comIn their own words
★★★★★
“They could've improved on the communication with the installation.”
Kathi and Dave C. · Gabriola Island · 2023
See this roof 5 photos · Deep Charcoal Slate★★★★★
“timing of phone call about delivery of material was same day as delivery...at least a day or two in advance would have been better”
William Bloor and Geoffrey M. · Salt Spring Island · 2019
See this roof 6 photos · Colonial Brown Cedar Shingle★★★★★
“I haven't heard from them yet and I'm wondering if I'm supposed to get a copy of the warranty.”
James and Lori H. · Mayne Island · 2015
★★★★★
“Very punctual from beginning to end. Great communication and follow-up.”
Darrell and Rhonda H. · Swansea Point · 2026
★★★★★
“Interlock Metal Roofing could improve by providing more status updates. My experience was pretty smooth and straightforward. No one has brought the sign that we are supposed to display, but everything was great.”
Bryan and Lindsay K. · Esquimalt · 2026
★★★★★
“Excellent product excellent crew No area top notch company Very happy I chose Interlock”
Robert C. · Nanoose Bay · 2025
See this roof 1 photo · Deep Charcoal Slate★★★★★
“Extremely satisfied with the whole process. The initial visit by the sale representative shows they have done their research on my roof and what will be required. They started work exactly when they said they would.”
Kenneth L. · Coquitlam · 2025
★★★★★
“The product is first class and the purchase experience extremely professional from start to finish. I stronly recommend their product & services.”
Howard Y. · Naramata · 2025
★★★★★
“Replaced my roof on a few days, looks awesome. Great crew from vlad and his team.”
Richard B. · Nanaimo · 2025
★★★★★
“We have invested not only our money but your promise. Please make sure to deliver your promises.”
Sharad (Kuntak) P. · Burnaby · 2025
★★★★★
“Very happy with the end product result and installation. I did have some minor concerns that were dealt with quickly and affectively. Thank you”
Tim S. · Nanoose Bay · 2024
★★★★★
“Our new Interlock black slate roof looks amazing! I am so happy with the product quality, great staff and excellent warranty.”
Lori N. · Victoria · 2024
See this roof 3 photos · Black Slate★★★★★
“Wonderful to work with, very professional and have a great product. I would recamend interlock to any one who want a life time quality roof with great people representing the company and product.”
Lucio and Maria S. · Burnaby · 2023
See this roof 2 photos · Colonial Brown Shake★★★★★
“Definitely not the cheapest roof but looks good! The people worked hard during the hottest days of summer and cleaned up after the job was done! It rained heavily two days after the roof was finished! No concerns! Well done!”
Maria T. · Vancouver · 2023
★★★★★
“All in all, they were really good. I would recommend them. It was positive. The company was great. I wouldn't hesitate to recommend them.”
Brent and Reta P. · Mayne Island · 2021
★★★★★
“I would caution against this style of roof if they have a steep roof or suggest they include a clause forbidding holes in the purchase agreement.”
Renato and Johanna M. · Salt Spring Island · 2018
★★★★★
“Fantastic service from the install team! Perfect precision in every shingle - We have done two houses with Interlock - we would strongly recommend them anytime!”
Lael G. · Duncan · 2026
See this roof 6 photos · Tudor Brown Slate★★★★★
“I recently had my 25 year old asphalt roof replaced with an Interlock Metal roof. I'm so very happy with my decision. In fact, best decision ever to have Interlock Industries install.”
Karen K. · Burnaby · 2026
★★★★★
“I can not think of anything that Interlock Metal Roofing could have done better.”
Ryan O. · Victoria · 2026
★★★★★
“Best decision I ever made. Moses exemplified what the company stands for. He worked hard and got the job done. I now have a roof I can be proud of 🙂”
Karen B. · Courtenay · 2025
★★★★★
“Great crew, and quality workmanship. Communication and scheduling could be improved.”
Sean Hare and Lynn G. · Victoria · 2025
★★★★★
“Quality product, easy to work with professional installation team. N/A”
Eric M. · Langley · 2025
★★★★★
“The install team were great and were able to work around my schedule so that I didn't have to take any extra time off work.”
Mark F. · Nanaimo · 2025
★★★★★
“Would be great if you could figure out a way to not leave so many small pieces of metal all around. So far I'm happy with the result and ok with how the process went. Would have be nice to be informed bette r”
Albert DeJamblinne and Alexandra R. · New Westminster · 2024
★★★★★
“Our family had Interlock installed on a house 40 years ago and it looks great today. I just had slate black installed in 2024 on a different house for a great look and reduced maintenance.”
Art W. · Port Alberni · 2024
★★★★★
“As I was not on site photos during installation and progress reports would have been appreciated.”
Barb E. · Garden Bay · 2023
★★★★★
“None, they did a great job. Overall, it was an exceptional and good experience.”
Chris Heagle and Barry A. · Victoria · 2023
★★★★★
“Very professional work and workers. I would recommend this company when I can.”
Myrna A. · Courtenay · 2023
The collection
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 West Coast cedar roof, with nothing to rot, split or grow moss 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
We install the Interlock® aluminum roofing system on homes and cabins on Salt Spring, Gabriola, the Penders, Mayne, Galiano, Denman, Hornby and Quadra. The panels are made in Canada at the Interlock plant in Delta, BC.
Completed Interlock® roofs by community, from our job book. Every other part of BC has its own local site: same company, same crews, same warranty.
These are the regions we currently serve. 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 this system, on the Gulf Islands
Ferries
Every island job is a logistics job: material, crew and the old roof all move by ferry. We plan the sailings, staging and disposal at the estimate so the install window you get in writing is one we can keep.
Fire
The islands are dry from July into the fall, and most homes sit in the trees. 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. We walk the gutters, vents and roof edges with you, because that is where embers get in.
Salt air
Aluminum does not rust, so a roof within reach of salt spray doesn't do what steel does. Interlock panels lock on all four sides with the fasteners concealed, and wind resistance is warranted to 193 km/h (120 mph) installed to manufacturer specification.
Rainwater
Many island homes catch water off the roof. Tell us at the estimate if yours does, and we'll go through the roof coating, the gutters and the downspouts with you before anything is ordered.
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 by Interlock Roofing at 9969 River Way in Delta, the same address as our office.
Interlock Metal Roofing (BC) Ltd. was founded on July 6, 1983 and is headquartered in Delta. Canadian owned and operated for 43 years.
The finished roof is made in BC and installed in BC. 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.
Salt Spring, Gabriola, North and South Pender, Mayne, Galiano, Saturna, Thetis, Denman, Hornby, Quadra and Cortes. Greater Victoria is at victoriametalroofing.com and the rest of Vancouver Island at vancouverislandroofing.com.
We are the certified Interlock® roofing contractor for British Columbia: a Canadian owned and operated BC company, founded July 6, 1983 as Interlock Industries (BC) Ltd., headquartered at 9969 River Way in Delta. We install one roofing system, the Interlock® aluminum roof, made in Canada by Interlock Roofing at the same address. We are BBB Accredited with an A+ rating, Baeumler Approved, and a 2026 GuildQuality GuildMaster Award winner.
Five aluminum profiles (Slate, Cedar Shingle, Shake, Mediterranean Tile and Standing Seam), also available in solid copper. Slate is the most-installed profile in our BC job book, followed by Cedar Shingle and Shake. Every profile needs a minimum 3/12 roof slope. We bring samples to the visit so you can see each one against your house.
Class A Fire Rated Available as a complete assembly. Under ASTM E108 a fire classification belongs to the assembly, not the panel; on our roofs Class A is achieved with two layers of GAF VersaShield® over 12 mm (15/32-inch) plywood. Aluminum itself does not ignite. If you want the Class A assembly, ask for it in your quote, where it is priced as a line item.
Two. The manufacturer, Interlock Roofing, gives the Guardian Lifetime Limited Material Warranty on the aluminum material and its factory finish. The installer, Interlock Metal Roofing (BC) Ltd., gives a 10 Year Limited Labour Warranty on the workmanship. They are separate documents with separate terms, and you can read both in full before you buy.
Our metal roof cost page shows real price ranges from our own 2025 and 2026 BC contracts, as a rough guide only: prices vary from job to job with the roof's structure and other conditions, and an in-home roof consultation is required for accurate pricing. The biggest factors are roof area, pitch and complexity (valleys, dormers, skylights and chimneys), what is under the old roof, the profile you choose, and options such as the Class A fire-rated assembly, snow guards or hidden gutters. Steep lots, stratas and island or ferry sites change the logistics too. You get a fixed price in writing, and anything the deck needs goes into that quote, not into a change order later. Call (604) 210-3850 to book the visit.
Free, no obligation
A free consultation on Zoom (most homeowners choose it) 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 (BC) Ltd. · 9969 River Way, Delta, BC
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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