Commercial Roof Installation & Replacement

A commercial roof is a long-term investment in your building, and installing it right the first time saves years of trouble. Markit Roofing designs and installs new and replacement commercial roofs across Calgary and Edmonton, engineered for Alberta snow loads, wind, and freeze-thaw stress from day one.

Whether you are re-roofing an ageing flat roof or topping a new build, we specify the right system for your structure, complete the commercial roof installation to manufacturer standard, and back it with solid warranties. From single-ply membranes to metal, our certified crews deliver a roof built to protect your business for decades. Book your assessment today.

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Planning a New Commercial Roof for Your Building

Deciding between another patch and a full replacement is rarely obvious from the ground. If your commercial roof shows recurring leaks, widespread blistering, soft decking, or failing seams, a brand-new system is often the smarter long-term choice for your Calgary or Edmonton property and the assets it shelters below.

A commercial roof inspection settles the question honestly, telling you whether a targeted repair will still hold, whether a roof coating system can buy years more, or whether full replacement serves you better. We never push an unnecessary re-roof, and every recommendation is grounded firmly in what your structure, roof deck, and long-term plans genuinely require.

Our Roof Installation Process

Structural and Deck Assessment

Every installation starts with a full structural and deck evaluation. We inspect the existing roof, check the decking for rot or moisture, verify the minimum quarter-inch-per-foot slope to drain, and confirm the structure carries Alberta snow loads. Core samples show how many layers are already up there and whether the insulation beneath is dry.

That layer count matters. Building codes limit how many roof assemblies can be stacked before a tear-off becomes mandatory, so knowing what is in place decides whether your commercial roof installation is a recover or a full replacement.

Roofing System Selection

With the deck understood, we help you choose the roofing system that fits your building, use, and climate. TPO and EPDM typically deliver 20 to 30 years of service, while standing-seam metal can exceed 50 years. Rooftop traffic, grease exhaust, and chemical discharge further narrow the field.

We also match the warranty to your needs. A material-only warranty covers the membrane alone; a no-dollar-limit system warranty covers labour and materials together and requires a manufacturer-approved installer. Knowing which you are getting matters more than the years printed on it.

Tear-Off and Deck Prep

On installation day, our crew removes the old roof down to a sound deck, responsibly disposes of debris, and inspects what lies beneath. Wet insulation is replaced, the deck repaired, and a vapour barrier installed. In Alberta’s climate, that barrier is not optional; without it, warm interior air carries moisture into the assembly, where it condenses inside the insulation every winter.

We then set tapered insulation to build positive slope toward the drains, correcting the flat spots that caused ponding on the old roof. Work is phased so the building stays watertight overnight.

Precision Membrane Installation

Our certified installers lay the new system to the manufacturer’s specifications, heat-weld seams, adhere or fasten the membrane, and detail every penetration, curb, and edge. Fastening patterns tighten at the perimeter and corners, where wind uplift forces are strongest, and most wind damage begins.

Quality is verified at every stage of the commercial roof installation, not just at the end. We probe seams and confirm positive drainage before sign-off. The finished roof is registered with the manufacturer so your warranty is active from day one rather than sitting unfiled.

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Roof Systems We Install Across Calgary & Edmonton

Single-ply membranes are the workhorses of modern flat commercial roofing. TPO offers a bright, reflective surface that reduces cooling demand during hot Alberta summers, while PVC provides superior chemical resistance for restaurants and industrial buildings. Both are heat-welded into a monolithic, watertight surface with no adhesive seams to fail. We install them mechanically fastened or fully adhered to suit your deck, wind zone, and insulation plan across Calgary and Edmonton commercial properties of every size.

EPDM is a proven synthetic rubber membrane trusted on flat roofs for over forty years. Its natural flexibility handles the sharp freeze-thaw swings that define Alberta winters, expanding and contracting without cracking or splitting. We install EPDM in large, seam-minimising sheets, then detail the perimeters and penetrations for a durable, low-maintenance roof. It remains a dependable, value-driven choice for warehouses, retail plazas, and multi-unit buildings that need long service life with minimal fuss.

For roofs demanding rugged, multi-layer protection, modified bitumen and built-up systems deliver exceptional durability underfoot. We torch-apply or self-adhere modified bitumen in redundant plies, building a thick, puncture-resistant membrane ideal for rooftops with heavy foot traffic or equipment. Built-up roofing layers bitumen and reinforcing felts into a time-tested assembly. Both suit Calgary and Edmonton buildings where toughness and a long, reliable lifespan matter more than anything else on the specification.

When longevity is the top priority, standing seam metal roofing is hard to beat across Alberta. Concealed-fastener panels shed snow and rain efficiently, resist hail impacts, and can last 50 years or more with minimal upkeep. We install engineered metal systems on both low-slope and steep-slope commercial buildings, detailing every seam and flashing carefully for full weather-tightness. It is a premium, energy-smart choice for owners who want a roof that performs for generations across Calgary and Edmonton.

What Makes Our Commercial Installations Different

Markit Roofing pairs certified installation crews with honest specification advice and warranty-backed artistry on every commercial roof we install across Calgary and Edmonton. Every project is completed by our own Red Seal in-house installers rather than subcontractors, which is how we hold consistent quality on a replacement that has to perform for the next 20 to 30 years.

Red Seal In-House Installers

Our installers are trained and certified in the full range of low-slope assemblies, from single-ply TPO and EPDM to modified bitumen and standing-seam metal. That breadth means we install to each manufacturer’s written specification rather than to habit, which is what keeps a system warranty enforceable for its full 20- to 30-year term instead of void on a technicality.

Alberta-Rated Roof Systems

We specify and build every roof for the realities of Alberta weather, not a generic climate. Snow loads, wind uplift, hail, and relentless freeze-thaw cycles all shape the system, insulation, and detailing we recommend. The result is a commercial roof engineered to handle everything Calgary and Edmonton throw at it, season after season, without premature failures or costly early replacement.

Minimal Business Disruption

A re-roof should never shut your business down. We plan each installation around your operating hours, phase the work in watertight sections, and never leave an open deck overnight. Clear communication and tidy staging mean your staff, tenants, and customers carry on with as little interruption as possible while we replace the roof above their heads.

Warranty-Backed Workmanship

Every commercial roof we install is backed by both manufacturer material warranties and our own artistry guarantee, so you are fully protected on two fronts. We stand behind our installations and remain available for the scheduled roof maintenance most warranties require twice a year to stay valid. This long-term commitment is why property managers across Alberta return to Markit Roofing for their next roofing project.

One Contractor, Start to End

One roofing partner carries your project from initial specification through to final warranty registration, so nothing falls between the cracks. We handle the assessment, system selection, tear-off, installation, and handover documentation as a single accountable scope. That continuity means no finger-pointing when questions arise later, and one team that knows exactly how your roof was built and why.

Commercial Roof Installation & Replacement

Planning a New Commercial Roof for Your Building

Our Roof Installation Process

Structural and Deck Assessment

Roofing System Selection

Tear-Off and Deck Prep

Precision Membrane Installation

Have a new roofing project?

Roof Systems We Install Across Calgary & Edmonton

What Makes Our Commercial Installations Different

Red Seal In-House Installers

Alberta-Rated Roof Systems

Minimal Business Disruption

Warranty-Backed Workmanship

One Contractor, Start to End

our commercial roofing services

Maintenance & Repairs Services

Roofing Installation & Replacement Services

Emergency Roof Repair Service

Waterproofing & Coating Services

Roofing Inspection & Leak Detection Services

Insurance Claim Assistance Service

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Get the best roofing services today!

Markit Roofing

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