EPDM flat roofing:
CPR Group installs and repairs EPDM (ethylene propylene diene monomer) single-ply membranes, a flexible rubber roofing system that handles Calgary's extreme temperature swings without cracking or splitting.
WHERE THE FIRST THING WE BUILD IS TRUST
Flat Roofing Services in Calgary
CPR Group Ltd installs, repairs, and replaces flat roofing systems across Calgary, including EPDM, SBS modified bitumen, TPO, and tar and gravel. Flat roofs in Calgary take the worst of our climate: standing water from spring melts, thermal shock from chinook swings, and ice damming through winter. Our crew builds and repairs flat roof assemblies that handle all of it.
Every flat roofing project includes a full inspection and written scope of work before we start.
CPR Group Ltd: your top choice for Calgary roofing, restoration & exteriors
Since 2007, CPR Group Ltd has served Calgary and Southern Alberta with full-service roofing, property restoration, and exterior renovations.
Discover CPR Group's comprehensive flat roofing
solutions
We offer a comprehensive range of flat roofing services tailored to meet the specific needs of Calgary residents and businesses:
4.7 / 5 · Excellent
Based on 36 Google reviews
SBS modified bitumen:
Styrene-Butadiene-Styrene (SBS) roofing offers superior resistance to weathering and flexibility. Our skilled team handles all aspects of SBS roofing, from installation to maintenance and repair.
TPO flat roofing:
CPR Group heat-welds TPO (thermoplastic polyolefin) membrane seams for a continuous, watertight surface. TPO reflects UV radiation, reduces cooling costs, and resists chemical exposure on commercial flat roofs.
Tar and gravel roof repair:
Our team patches blistered membranes, rebuilds failed flashings, and recoats worn surfaces on Calgary's aging built-up tar and gravel roofing systems.
Flat roof inspections:
CPR Group's HAAG Certified Inspectors check membrane condition, drainage slope, flashing terminations, and seam integrity, identifying failures before they become leaks.
Flat roof replacement:
When repair isn't enough, CPR Group tears off the existing system, inspects the deck and insulation, and installs a new flat roof membrane sized and sloped for proper drainage.
Since 2007
18+ Years of Flat Roofing in Calgary's Climate
CPR Group Ltd, a Calgary roofing company since 2007, has installed and repaired flat roof systems across the city on garage-top decks, multi-unit residential buildings, warehouses, retail centres, and commercial properties throughout Southern Alberta.
Flat roofing demands a different skillset than sloped residential work: membrane selection, slope-to-drain calculations, vapour barrier detailing, and flashing terminations all determine whether a flat roof lasts 10 years or 25. CPR Group's formal building science training means our flat roof specifications account for moisture management, thermal bridging, and long-term durability, not just what's cheapest to install.
Every CPR Group flat roofing project is backed by $5 million in commercial general liability coverage through Federated Insurance, membership in the Alberta Allied Roofing Association (AARA) since 2021, active WCB-Alberta coverage since February 2013, SECOR safety certification for commercial projects, and a BBB A+ accreditation held continuously since July 2015. CPR Group installs flat roofing products from Soprema, IKO, and other leading manufacturers, and serves Calgary, Airdrie, Okotoks, Chestermere, Strathmore, Red Deer, Lethbridge, Medicine Hat, Brooks, and High River.
Materials
Flat Roofing Materials CPR Group Installs in Calgary
01
EPDM (Rubber Roofing)
A single-ply rubber membrane that stays flexible in extreme cold. EPDM handles Calgary's chinook-driven temperature swings without cracking. Typical lifespan: 20–30 years with proper maintenance.
02
SBS Modified Bitumen
A multi-layer system torch-applied or cold-adhered to the roof deck. SBS offers superior puncture resistance and flexibility for flat roofs with foot traffic or rooftop equipment. CPR Group installs SBS products from IKO and Soprema.
03
TPO (Thermoplastic Polyolefin)
A heat-welded single-ply membrane with strong chemical and UV resistance. TPO's reflective surface reduces cooling loads on commercial buildings. Typical lifespan: 15–25 years.
04
Tar and Gravel (Built-Up Roofing)
The traditional flat roofing system still found on many Calgary buildings. CPR Group repairs and maintains existing tar and gravel roofs and can re-roof them with modern membrane systems when the built-up layers fail.
Our Partners
Brands & companies we work with
You get only the best! CPR Group Ltd. doesn't cut corners. Leverage our network to get the best exterior products, shingles, shakes, roof tiles, slate, and flat roofing products, backed by a manufacturer warranty and roofing installation by journeymen roofers.
FAQ
Frequently Asked Flat Roofing Questions
Find answers to commonly asked questions about our flat roofing process.
What types of flat roofing services do you offer?
We offer a wide range of flat roofing services, including TPO, EPDM, and SBS flat roofing.
What's the best flat roofing material for Calgary's climate?
It depends on the building. EPDM handles Calgary's temperature extremes well and lasts 20–30 years. SBS modified bitumen offers better puncture resistance for roofs with foot traffic. TPO works well on commercial buildings where UV reflectivity matters. CPR Group inspects your roof deck, drainage, and usage conditions before recommending a specific system.
How long have you been in business?
We have been serving Calgary and the surrounding areas since 2007, providing premium roofing and exterior services.
Do you provide maintenance services for flat roofs?
Yes, we offer comprehensive maintenance services to keep your flat roof in optimal condition.
Can you repair my flat roof, or does it need full replacement?
CPR Group's inspection will determine that. If the membrane is intact with isolated failures (a seam separation, a flashing failure, ponding in one area), a targeted repair is usually the better option. If the membrane is cracked, blistered across large areas, or the insulation underneath is saturated, replacement is the more cost-effective long-term solution.
What areas do you serve?
We serve Calgary, Lethbridge, Medicine Hat, Red Deer, Airdrie, Okotoks, Brooks, Chestermere, High River, Strathmore.
How often will I need to replace my flat roof in Calgary?
EPDM: 15-18 years. TPO: 20-25 years. SBS Modified Bitumen: 30-40 years. Standing Seam Metal: 50+ years.
Can flat roofs handle Calgary's heavy snowfall?
Yes, when properly designed with adequate drainage and slope packages. A professional flat roofer will ensure your roof has the minimum 1/4" per foot slope required for proper drainage during our rapid springtime melts.
How quickly can you respond to flat roofing emergencies?
We understand the urgency of flat roofing emergencies and strive to respond as quickly as possible to address any issues. We're proud in maintaining a same-day response time anywhere in Southern Alberta.
How long does a flat roof last in Calgary?
Most flat roofing systems installed by CPR Group last 15–30 years depending on the membrane type, installation quality, and maintenance. EPDM and SBS tend toward the higher end in Calgary's climate. Tar and gravel systems vary widely, many of the older ones across Calgary are past their expected lifespan.
Ready to build your flat roof ?
Free on-site estimates. No pressure, no obligation. Where the first thing we build is trust.