Commercial Metal Roofing in Calgary

Commercial metal roofing is the longest-lasting roof a Calgary business can buy — and for warehouses, manufacturing plants, agricultural buildings and sloped commercial structures, it's often the smartest. A steel roof shrugs off the hailstorms, –30°C winters and heavy spring snow that punish lesser systems, and a quality install will still be protecting your building 40 to 60 years from now. CMP Roofing supplies and installs metal roofing across Calgary, matching the profile, gauge and coating to how your building is used and how long you plan to own it.

Metal roofing systems we install in Calgary

Not every metal roof is equal. The right system depends on slope, exposure, budget and whether the building is occupied or used for storage. We are system-agnostic and recommend the panel that fits — never a one-size-fits-all spec.

• Standing-seam (concealed fastener) — our premium recommendation for occupied commercial buildings. Fasteners are hidden beneath raised, interlocking seams, so there are no exposed screw penetrations to leak or back out. The most leak-resistant, longest-lasting metal roof available.
• Corrugated / exposed-fastener — an economical, proven profile for agricultural buildings, equipment storage, shops and budget-driven industrial roofs where a longer maintenance interval is acceptable.
• Snap-lock panels — concealed-fastener panels that snap together without seaming tools, ideal for retrofits and steeper sloped roofs where fast, clean installation matters.

Profiles, gauges and coatings

We spec the panel to the job. Heavier 24-gauge steel resists hail denting and oil-canning better than thinner 26- or 29-gauge stock, which keeps a large warehouse roof looking flat and professional for decades. Finish matters just as much: a PVDF (Kynar) coating holds its colour and corrosion resistance far longer than economy polyester paints — critical for Calgary's intense UV and freeze-thaw. We also offer cool-roof reflective coatings that cut summer cooling loads on large low-slope metal roofs and help meet Alberta energy targets.

Built for Alberta weather

Metal is one of the most hail-resistant materials you can put on a building, and Class 4 impact-rated panels can lower insurance premiums in hail-prone Calgary. Steel is also non-combustible, adding a real fire-resistance benefit for industrial and agricultural properties. On sloped roofs, metal sheds snow instead of holding heavy loads, reducing winter stress on the structure — though we add snow guards over entries and walkways where shedding could be a hazard. Just as important is thermal expansion detailing: steel moves with Calgary's wide temperature swings, so we use floating clips and properly designed seams that let panels expand and contract without buckling, oil-canning or tearing fasteners loose.

Metal-over-existing retrofit options

On many sloped commercial and industrial buildings, we can install a new metal roof directly over the existing one using a sub-purlin or batten system. A metal retrofit avoids a costly, disruptive tear-off, keeps your operations running, adds an insulated air gap that improves energy performance, and gives you a fresh 40-plus-year roof. We confirm the existing deck and structure can carry the load before recommending a recover.

Our metal roofing process

1. Free on-site assessment — we inspect the roof, slope, deck and structure, document condition with photos, and confirm whether a new install or a metal-over-existing retrofit is the smarter investment.
2. Transparent, itemized quote — profile, gauge, coating, snow-load engineering, warranty terms and timeline, with no surprise add-ons.
3. Phased, low-disruption install — scheduled around your operations and kept watertight at every stage 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
• Fully licensed, WCB-covered and $10M+ liability insured
• Manufacturer-certified installers — your warranty is backed and valid
• Honest assessments and itemized quotes — no pressure, no hidden costs