Commercial TPO & EPDM Membrane Roofing in Calgary

Single-ply membrane roofing — TPO and EPDM — has become the default low-slope system for Calgary commercial and industrial buildings, and for good reason. These thin, flexible sheets shrug off the hail, intense prairie UV and brutal freeze-thaw swings that crack and split older asphalt roofs. CMP Roofing specs and installs TPO, EPDM and PVC membrane roofing across Calgary warehouses, offices, retail plazas and manufacturing plants, matching the right membrane to each building rather than pushing a single product line.

TPO membrane roofing

Thermoplastic polyolefin (TPO) is the fastest-growing single-ply membrane in North America, and it is our most-specified system for Calgary commercial roofs. Its bright white surface reflects solar heat instead of absorbing it, which trims air-conditioning loads on conditioned offices and warehouses through our increasingly hot summers. The defining strength of TPO is its seams: instead of relying on adhesives or tape, our crews fuse adjacent sheets together with hot-air welders, producing a monolithic bond that is stronger than the membrane itself. That welded seam is why TPO resists wind uplift and stands up to hail impacts that would puncture a glued lap. Reinforced with a polyester scrim and available in 60 and 80 mil thicknesses, TPO delivers excellent puncture and tear resistance on roofs that see rooftop traffic, service techs and equipment.

EPDM rubber roofing

Ethylene propylene diene monomer (EPDM) is a synthetic rubber membrane with a five-decade track record on commercial roofs. Its appeal is durability and value: a single EPDM sheet remains flexible from –40°C to well above 60°C, so it tolerates Calgary's freeze-thaw cycling without becoming brittle. EPDM comes in three attachment methods, and we choose based on your deck, building height and exposure — fully-adhered for high-wind sites and visible roofs, mechanically-fastened for fast, economical coverage on large warehouse decks, and ballasted with river rock or pavers where weight is welcome and budgets are tight. EPDM is typically the most cost-effective single-ply per square foot, which makes it a strong choice for sprawling, low-traffic industrial roofs where energy reflectivity is not the priority.

PVC for grease and chemical exposure

Where a roof is exposed to animal fats, cooking grease, solvents or industrial chemicals — think restaurant kitchens, food processing and certain manufacturing exhaust — standard TPO and EPDM can degrade over time. For those buildings we install PVC membrane, which is hot-air welded like TPO but formulated to resist chemical and grease attack, making it the correct long-term choice around kitchen and process exhaust fans.

Choosing between TPO and EPDM

The decision usually comes down to energy goals and roof use. Choose TPO when you want to cut cooling costs, have a conditioned interior, or need the toughest hail-resistant seam on a trafficked roof. Choose EPDM when you have a large, simple, low-traffic deck and want the lowest cost per square foot with proven longevity. PVC wins whenever grease or chemicals are in play. We never make this call for you off a spec sheet — we walk the roof, review your operations and ownership timeline, and put the trade-offs in writing.

Engineered for Alberta's climate

A membrane is only as good as the assembly beneath it and the hands that weld it. Every CMP installation is detailed for Calgary, not a generic warm-climate spec. We build to the correct insulation R-value to meet Alberta energy code and slash heating bills, add tapered insulation to drive water to the drains and eliminate ponding that freezes and tears membranes, and reinforce flashing at every penetration, curb and parapet where leaks actually start. Seam-weld quality is non-negotiable — our welders probe-test every seam to confirm a continuous bond, because a single cold weld is the most common cause of premature single-ply failure. Where hail exposure is severe, we step up membrane thickness and select hail-rated products.

Manufacturer warranties and certified installation

Leading membrane manufacturers back their systems with 20 to 30 year warranties — but those warranties are only valid when an approved, certified contractor installs the roof to spec. CMP crews are manufacturer-certified, so the warranty you are promised is the warranty you actually get, covering both the material and our workmanship. Cheap installs that void the manufacturer's coverage are a false economy you pay for the first time the roof leaks.

Our membrane installation process

1. Free on-site assessment — we inspect the deck and existing roof, run a moisture scan, and confirm whether a recover or full tear-off is the smarter investment.
2. Transparent, itemized quote — membrane type, thickness, attachment method, insulation, warranty terms and timeline, with no surprise add-ons.
3. Phased, low-disruption install — scheduled around your operations, kept watertight at every stage, with every seam probe-tested by certified crews.
4. Final inspection & warranty — we walk the finished roof with you and register your manufacturer and workmanship warranties.

Why Calgary businesses choose CMP Roofing

• 20+ years and 2,500+ commercial roofs completed across Calgary and Southern Alberta
• Manufacturer-certified TPO, EPDM and PVC installers — your warranty is backed and valid
• Fully licensed, WCB-covered and $10M+ liability insured
• Probe-tested seams and honest, itemized quotes — no pressure, no hidden costs