Metal Roofing in Newmarket, Ontario — Lifetime Interlock® Aluminum Shingles Installed Locally

Newmarket Metal Roofing Experts Installing Lifetime Interlock® Aluminum Shingles Since 1998

Metal Roofing Built for Newmarket's Heavy Rain, Snow Loads, Windstorms & Lifetime Protection

Interlock Metal Roofing (Ontario) Ltd., founded February 27, 1998, is the exclusive authorized installer of Interlock® Lifetime Aluminum Roofing Systems serving homeowners in Newmarket, Ontario. As a trusted local metal roofing contractor offering roof replacement and re-roofing services throughout Newmarket, we deliver heavy‑gauge, fire‑resistant, energy‑efficient cool roof solutions engineered for the region’s freeze–thaw cycles, heavy snow loads, ice-damming risk, and summer heat—helping roofs shed snow quickly, reduce ice-dam formation, resist wind-driven rain, and lower attic temperatures. Choose the timeless look of slate, cedar shingle, shake, Mediterranean tile, or standing seam with the long‑lasting strength of metal; every Interlock roof is protected by the Alunar® Coating System and backed by a Lifetime Warranty for Newmarket, Ontario homeowners.

Interlock metal roofing styles including slate, cedar, shake, tile, and standing seam in Newmarket, Ontario

Performance you can measure (all climates)

Wind- and storm-resistant Interlock® metal roof rated to 193+ km/h for Newmarket, Ontario

Weather Resistant

Tested to 193+ km/h (120 mph) winds

Interlock® aluminum metal roof in Newmarket, Ontario backed by a Lifetime-Limited, transferable warranty

Durable

Lifetime-Limited, transferable warranty

Energy-efficient cool-roof Interlock® aluminum metal roofing in Newmarket, Ontario

Energy Efficient

Reflective cool-roof lowers cooling costs

Freeze–thaw durable Interlock® metal roof for Newmarket, Ontario

Freeze–Thaw Durable

Endures ~86 freeze–thaw days a year

UL 2218 Class 4 impact- and hail-resistant Interlock® metal roof in Newmarket, Ontario

Impact Resistant

UL 2218 Class 4 — top hail rating

Snow-shedding Interlock® metal roof built for Newmarket, Ontario winters

Snow-Shedding

Built for ~117 cm of snow a year

  • Proudly manufactured in Canada by a family‑owned company, with authorized installers serving homeowners across Newmarket and south‑central Ontario
  • Aluminum panels coated with the Alunar® Coating System (no visible aluminum surface) for durable colour retention and corrosion resistance
  • Precision weatherproof seams (profiles: slate, cedar, shake, tile) and mechanical fastening (profile: standing seam) deliver long-term leak protection during wind-driven rain events
  • Interlocking panel system tested to 193+ km/h (120+ mph) for severe windstorms that occur in south‑central Ontario
  • Class A fire-rated available to address seasonal dry‑period fire concerns and ember exposure
  • Designed to shed heavy Ontario snowfall and carry elevated snow loads typical of Newmarket roofs
  • Attachment details and panel geometry reduce ice‑dam formation and tolerate repeated freeze–thaw cycles
  • UL 2218 Class 4 impact resistance for protection from hail, falling branches and storm debris
  • Cool‑roof performance lowers summer heat gain and improves attic comfort during Newmarket heat waves
  • Solar‑compatible roof platform engineered for bracket‑mounted photovoltaic installations on local homes
  • Low‑maintenance, fully recyclable aluminum roofing that outlasts asphalt shingles in Newmarket’s climate
  • Engineered resistance to road salt and de‑icing chemicals used throughout Newmarket in winter maintenance
  • Built to handle intense rainfall and localized heavy‑downpour events (atmospheric‑river–type storms) affecting southern Ontario
  • Alunar® finish and smooth panel profiles limit moss and lichen growth common on shaded roofs in Newmarket
  • Architectural profiles replicate slate, cedar shake and tile while meeting local building envelope and aesthetic requirements
  • Backed by a Lifetime‑Limited transferable warranty for long‑term protection and resale confidence in Newmarket properties

Metal roofing built for Newmarket's climate

Averages (10-yr): ~780 mm rain and 117 cm snow per year, ~3017 sunshine hours, mean 8.5°C, typical daily-max winds ~19 km/h with gusts to 113 km/h, and ~86 freeze–thaw days per year.

  • 117 cmavg. snow / year
  • 780 mmavg. rain / year
  • 86freeze–thaw days / year
  • 113 km/hpeak wind gusts
  • 3017 hrsannual sunshine
  • 8.5°Cmean temperature

Interlock® aluminum roofing is engineered for these conditions — wind-rated to 193+ km/h (120 mph), UL 2218 Class 4 impact-rated, Class A fire-rated, and built to shed snow and resist ice dams and freeze–thaw cracking, backed by a lifetime limited warranty.

Interlock Metal Roofing (Ontario) Ltd.

Hours

  • Monday9:00 AM – 5:00 PM
  • Tuesday9:00 AM – 5:00 PM
  • Wednesday9:00 AM – 5:00 PM
  • Thursday9:00 AM – 5:00 PM
  • Friday9:00 AM – 5:00 PM
  • SaturdayClosed
  • SundayClosed

Interlock Metal Roofing (Ontario) Ltd. has been protecting homes across the Greater Toronto Area and South-Central Ontario since 1998, offering premium aluminum roofing systems built for urban and suburban lifestyles. From Oakville and Mississauga to Markham and Barrie, our roofs combine elegant design with lifetime performance—resisting corrosion, high winds, and year-round weather extremes. Trusted for quality, durability, and sustainability, Interlock roofs deliver beauty and peace of mind for homeowners seeking a long-term investment.

Recognition GuildQuality Guildmaster Award — verified customer satisfaction (GuildQuality)

Accredited BBB Accredited A+ · Baeumler Approved

Part of the Interlock® certified installer network →

Get a Free Metal Roof Estimate in Newmarket, Ontario

Interlock® Aluminum Roofing — all-climates performance specs for Newmarket, Ontario

Spec / RatingClimate / Risk Factor + What It Solves
Wind resistance: 120+ mph (193+ kph)Extreme wind, hurricanes, storm uplift: full interlocking attachment helps prevent blow-offs, edge lifting, and panel loss in high-gust events.
Fire rating: Class A (with proper assembly)Wildfire, embers, radiant heat, chimney sparks: non-combustible roof assembly provides the highest residential fire protection rating.
Hail resistance: UL 2218 Class 4Hail and impact debris: highest impact classification; resists cracking, splitting, and surface loss common with asphalt under hail strikes.
Snow & ice performance: interlocking, shedding profileHeavy snow, freeze-thaw, ice dams: smooth aluminum sheds snow efficiently and the interlocking design helps block water intrusion when melt-refreeze cycles occur. (Final snow-load capacity depends on roof structure and local code.)
Corrosion resistance: aluminum (won’t rust)Salt air, coastal humidity, wet climates: aluminum naturally resists rust and corrosion, reducing long-term failure risk in marine or high-moisture environments.
Heat / UV durability: baked-on coating systemHigh heat, intense sun, thermal cycling: coatings resist UV breakdown and temperature-swing fatigue, slowing fading and surface degradation.
Moss / algae resistance: smooth coated surfaceWet shade, organic growth: low-porosity metal surface gives moss/algae less to grip, reducing staining and maintenance.
Material: heavy-gauge aluminum roof profiles (Slate / Shake / Shingle / Tile / Standing Seam)All-season structural stability: lightweight, dent-resistant metal system stays stable through large hot-cold swings and severe weather.
Expected lifespan: 50+ yearsLong-term durability across climates: avoids re-roof cycles typical of shorter-life materials, even in high-stress environments.
Warranty: Lifetime-Limited, non-prorated + 50-year transferableLifetime protection + resale value: guarantees long-term material confidence and transfers to future owners.

Available Profiles in Newmarket, Ontario:

Explore all Interlock® metal roofing systems, or see the Guardian lifetime warranty and independent testing reports.

44 completed Interlock® metal roofs in Newmarket, ON

Interlock® has completed 44 metal roofs in Newmarket, Ontario between 1998–2023, across 2 roof profiles (Shingle, Slate). Every marker is a real, anonymized installation completed by a Certified Interlock Installer — explore them on the interactive map and photo grid below, filterable by profile, colour and year of completion.

  • 44completed roofs
  • 2roof profiles
  • 1998–2023years

4.6 / 5 — from 1,932 verified customer reviews in Ontario

What our customers are saying:

★★★★★
Review: March 26, 2016Completion: February 19, 2016

Nothing at the moment. Ontario Roof2800 Argentia Road Unit 5Mississauga, ON L5N 8L2Attention: Angelo LadasAngelo,March 18, 2016“Thank You" just does not seem adequate enough to convey how we feel about the keynote presentation you gave on your product “Ontario’s Best Roof” Interlock® Lifetime Roofing on November 14, 2015. (I do accept your apologize for calling me “Sir”.)Angelo, you have excellent knowledge of the product that you represent. With your knowledge, and all the extra information on how a metal roof is worth the extra cost over time.The difference in a steel roof verses aluminum. Knowing and seeing a steel roof installed up our street in the fall. With the double strapping and the spacing between the shingles and the steel roof. We wondered about the spacing and all the extra weight, including condensation building up between. We were very sceptical on how efficient this would be. Knowing that we were going to purchase the correct roof for us, after your presentation and knowledge and you educated us that we have Lifetime Limited Warranty, Energy Efficient, Low Maintenance, Lightweight, Durability and with the extra protection on the coating of the aluminum, and ensuring that we have snow guards, which we decided to do the complete house. Also with the roof that we purchase there will be a selling feature when we decide to sell, the transferable Limited Warranty to the new owners with a cost.On November 20, 2015 we called and requested that you come back with the colours, due to our choice on our new eaves trough that we were purchasing. We needed to change our colour. Without a doubt you were at our house within a couple of hours with coffee in hand. Thank You.Thank you for showing us how we could afford “Ontario’s Best Roof” Interlock, with the winter program and how that worked great for us. Was totally impressed the day we were returning home, your customer service team was on the phone to get an install date. I must say the installation crew was great. We were impressed with the job they did and ensuring that the job site was cleaned up ever day, considering it only took them less than 3 day’s. Great job boy’s, you should be proud of such a great crew.Angelo, thanks again for working with the referral program. With our neighbours on our street and seeing their roof for the last 4 years and how it is still stunning and a great curbside appeal. Cheryl Johnson gave us the referral, and we could not be happier. They are delight with the cash back from the referral.With Sales Rep like you, You set a representation to Ontario’s Best Roof with yourappearance, soft spoken, politeness, and you want your customer to be comfortable and feel no pressure. You made us feel very comfortable and no pressure. I wish that there are more sales rep, like you out there. Thank you for everything and making this transaction so smooth.Sincerely,Jennette and Leslie Lavery-Smith

★★★★★
Review: August 29, 2023Completion: March 31, 2023

Everybody was great, it was just the cleaning. Don't put stuff in the eaves' trough.

★★★★★
Review: July 13, 2017Completion: June 30, 2017

Communication of schedule could improve. We are very happy with the roof.

★★★★★
Review: January 9, 2023Completion: December 31, 2022

They could have improved with the communication up until the start date.

★★★★★
Review: August 14, 2017Completion: August 3, 2017

All things went well. No suggestions Thanks,

★★★★★
Review: November 27, 2018

The salesman was very personable. He explained everything very well. He didn't try to hard sell. He gave pros and cons and explained the incentives he could give us. I was very happy with his presentation.

★★★★
Review: October 9, 2018

I feel you should have had a sample to leave with the customer to do his own testing & comparing. He should have provided me with a written estimate, rather than marking the amount on the brochure. I would have liked a written proposal.

Read all Ontario metal roofing reviews →

Nearby service areas in South-Central

Interlock® metal roofing is also installed in these communities near Newmarket:

Metal Roofing FAQs for Homeowners in Newmarket

The following metal roofing FAQs are designed specifically for homeowners in Newmarket, Ontario. Whether you are building a new home or replacing an existing roof, understanding how roofing materials perform in local weather conditions is essential. From wind and storm protection to fire resistance, hail impact, snow loads, and coastal moisture exposure, Interlock’s Lifetime Aluminum Roofing System is engineered to provide long-term durability, energy efficiency, and peace of mind in Newmarket.

How does a metal roof handle Newmarket's heavy snow and freeze-thaw cycles?

Metal roofs shed snow and ice far more effectively than asphalt because aluminum's smooth surface prevents ice damming — critical in a region that sees about 120 cm of snow annually and 86 freeze-thaw days per year. The four-way interlocking panels lock moisture out at seams, eliminating the gaps where ice can form and cause structural damage. Unlike wood shakes that absorb freeze-thaw stress and split, or asphalt that becomes brittle in repeated thaw cycles, roofing-grade 3105-H24 aluminum expands and contracts uniformly without degradation. Snow guards are available if you want to control runoff.

Why won't an aluminum metal roof rust like steel does?

Aluminum cannot rust because it contains no iron — iron is what oxidizes and creates rust. Instead, aluminum develops a thin, invisible oxide layer that actually protects the underlying metal. When that layer is scratched, it self-heals naturally. Our Alunar 70% PVDF fluorocarbon coating, applied to both sides of every panel and warranted for 30 years against chalking and fading, adds a second line of defense. In Newmarket's humid climate with about 780 mm of annual rain, this two-layer protection means you're not fighting corrosion — you're simply maintaining a roof that doesn't degrade from moisture.

Can a metal roof stand up to Newmarket's wind gusts?

Yes. Interlock's four-way interlocking aluminum panels are warranted to resist sustained winds of 120 mph, well above Newmarket's typical gusts around 113 km/h. The interlocking design means each panel is mechanically locked to its neighbors on all four sides — wind can't lift a single panel without breaking the whole system. Installation to spec is the key: proper fastening into solid deck creates a fail-proof bond. That's why we back it with a warranty covering wind damage up to 120 mph. In a region where autumn and winter gusts regularly test your roof, that margin of safety means sleep at night.

What's the metal roof hail rating, and will it help my insurance?

Interlock achieves UL 2218 Class 4, the highest hail impact classification available, and the warranty even covers perforation from hailstones up to 1.5 inches. Class 4 means the roof passed impacts from 2-inch steel balls dropped from 20 feet. Many homeowners see insurance discounts for this rating — check with your insurer, as several offer breaks for non-combustible roofs with Class 4 impact ratings. Combined with the roof's 120-year lifespan and non-prorated lifetime warranty, underwriters recognize you're eliminating a major claim category. Contact your broker early in the process to confirm your specific discount.

Is a metal roof really the last roof you'll buy?

Yes, in nearly every financial scenario. Asphalt costs less upfront but requires replacement every 15-20 years, plus disposal fees, labor, and disruption each cycle. Over 60 years, you'd reroof 3-4 times — that's four sets of labor, permit fees, and landfill waste. Interlock, backed by a non-prorated lifetime warranty and installed since 1998 with zero documented failures, keeps you out of that cycle permanently. The weight advantage also helps: at 0.41 lb/sq ft, it installs over most existing roofs, avoiding costly tear-off and structural work. Current promotion: interest-free payments for 3 months and save at least $2499 on installation. Run the 30-year math and the answer becomes clear.

How long does metal roof installation take, and can it go over my old roof?

Installation typically takes 3-7 days depending on roof size and complexity. Because Interlock panels are extraordinarily light — the Mediterranean Tile profile is 96% lighter than concrete or clay tile — they can install directly over existing asphalt shingles in most cases, eliminating a tear-off phase that can add weeks and thousands in labor. This also means no building permits for removal, less disruption, and no landfill impact from your old roof. The solid-deck underlayment and four-way interlocking seams create a complete envelope immediately. We'll inspect your current structure during the pre-install walk and confirm whether an overlay or teardown is the right call for your home.

Does a metal roof really stay cooler than asphalt shingles?

energy-efficient Interlock colors with thermal emissivity of 0.84 and solar reflectance up to 0.55 reflect heat that dark asphalt absorbs and radiates into your home. The Cool Roof Rating Council verified these values — they're measured, not marketing claims. In a region with about 3017 sunshine hours per year, that reflectance compounds over spring, summer, and fall. You'll see the biggest cooling benefit in months when Newmarket averages above 15°C, but the real payoff is consistency: a reflective roof stays stable in temperature swings and reduces HVAC strain year-round. Lower cooling costs and reduced peak demand also qualify you for potential utility rebates — check with your local provider.

Is metal roofing fire-resistant?

Aluminum is non-combustible and Interlock is available with a Class A fire classification — the highest rating for fire resistance. Non-combustible means the material will not ignite or contribute fuel to a fire, even in extreme heat. Class A rating means it resists severe fire exposure without spreading flames. This matters in any neighborhood, but particularly in regions with wildfire exposure or dense housing. The roof itself won't burn, and it won't carry fire to adjacent structures. Combined with the metal's durability against wind-blown embers and flying debris from nearby fires, you've got a passive safety feature that lasts 120 years and requires no maintenance.

Is metal roofing really recyclable, or is it just greenwashing?

Interlock aluminum is approximately 95% recyclable at end of life — it has scrap value and will be reclaimed by recyclers, not sent to a landfill. Asphalt shingles, the material you're replacing, cannot be recycled: they go to landfill, where they off-gas and break down for decades. Over your roof's 120-year lifespan, you'll generate zero roofing waste; a conventional asphalt homeowner replaces their roof 5-6 times and sends 5-6 tons of shingles to waste. Interlock is CALGreen-verified for reduced maintenance, meaning no chemical treatments, no frequent repairs requiring material shipment. The aluminum itself comes from recycled sources more affordably each year. This isn't a marketing angle — it's physics: metal doesn't degrade like cellulose or asphalt.

Who installs Interlock metal roofing in Newmarket, Ontario?

Interlock Metal Roofing (Ontario) Ltd. has served the Newmarket region and South-Central Ontario since 1998 — the same year the product was first manufactured in Delta, BC. That means your installer knows this climate intimately: the 86 annual freeze-thaw cycles, the 117 cm snow loads, the 113 km/h gusts, and the installation details that make a metal roof perform in these exact conditions. Factory-trained crews handle every install to spec, ensuring your 120 mph wind warranty, Class 4 hail rating, and lifetime coverage are all enforceable. Request a free site inspection and quote — we'll walk your roof together and explain exactly what's happening with your structure and why Interlock makes sense for your home.

Is a metal roof a good choice for Newmarket’s climate?

Yes. Newmarket averages about 117 cm of snow, 780 mm of rain, roughly 86 freeze–thaw days a year, with peak wind gusts near 113 km/h. Interlock® aluminum roofing is wind-rated to 193+ km/h (120 mph), UL 2218 Class 4 impact-rated and Class A fire-rated, and its four-way interlocking panels shed snow and resist ice dams and freeze–thaw cracking — all backed by a lifetime limited, transferable warranty.

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