Commercial Flat Roofing Services in Calgary 

Known as the problem solvers in the industry, Flat Roofing Ltd provides you with commercial flat roofing services in Calgary. With over 20 years of experience we have successfully worked on commercial roofing projects to deliver high-quality results. As a certified commercial roofing contractor in Alberta, we are capable of handling large and small-sized commercial properties such as restaurants, grocery stores, medical buildings, shopping malls and apartment buildings.


When your commercial roof is damaged, you can count on the professional roofers at Flat Roofing Ltd for commercial roof repairs in Calgary and the surrounding areas. We have the expertise and solutions for flat roofing emergencies and repairs.

a view of commercial flat roof with waterproofing

Commercial Flat Roof Repairs and Maintenance

We provide commercial roof repairs and maintenance for malls, brick and mortar locations, industrial buildings and more. We offer on-schedule convenience and care for commercial facilities because we understand that losing precious time is not feasible. With our efficient and knowledgeable team working on your site, you can be assured of quality roof work on time. While installing a roof for your commercial facility in Alberta, we take into account all the potential factors that can cause problems later.

We utilize the two-ply torch-on membrane to ensure a highly functioning, completely watertight roof for your commercial buildings. We also focus on waterproofing and weatherproofing your roof to protect your brick and mortar location from any kind of damage.


At Flat Roofing Ltd., we understand that maintaining a commercial property is challenging- whether it is an office, condominium, shopping mall, grocery store or apartment building. We provide comprehensive roof maintenance in Calgary to commercial properties. When inspecting your roof, we check for signs of wear and determine potential causes of damage to apply the best solutions to protect your roof.  


Contact us for a free assessment for commercial flat roof repairs and maintenance.

Commercial Flat Roof Problems

Flat roofs wear out due to sun damage, surface temperature, hail, snow, storms and other reasons. Other common problems with flat roofs are shifts caused by expansion and contraction due to varying temperatures. Small damage in the roof can lead to structural damage which can turn out to be very expensive. We also advise focusing on regular maintenance and inspection of roofs to identify any potential threats. Regular inspection can help mitigate costly repairs by identifying and fixing the issues on time. Examples of common commercial flat roof problems include:

  • Leaks: Weather damage or aging of your commercial flat roof can result in leaks entering your building and leading to more damage.
  • Ponding: While flat roofs have a degree of sloping to allow water to run off, it might not be adequate due to improper installation or wear and tear. Rainwater that pools on a roof can cause it to sag.  Ponding water freezes and the expansion damages the flat roof membrane.
  • Structural movement: Structural movement is the contraction and expansion of a building's envelope. This natural process causes movement in the building and the roofing over time. In commercial properties, the inside temperatures tend to be acutely different from the outside temperatures due to the quality of commercial-grade HVAC equipment. This difference accelerates the structural movement, causing flat roof membranes to crack around flashing details, drains, scuppers, and field seams.
  • Splits and tears: Flat roofs are prone to developing cracks and tears due to extreme weather conditions. This is why it is essential to have our commercial roofers examine damages to your roof after a storm. Ignoring these punctures can cause them to worsen, which can turn into leaks.  

Our commercial roofers can help repair these problems quickly and efficiently. We also offer waterproofing services for flat roofs, which can help create a moisture barrier.

Contact Us for Commercial Flat Roofing Services

With over 20 years of roof remediation experience, we have the knowledge and expertise to provide a wide variety of services to fix damaged roofs and prevent structural damage to your building. Flat Roofing Ltd. offers full service for all common commercial roofing repairs in Calgary. From leak repairs and preventive maintenance to installing a new roof, providing you with flashing replacement and custom fabricated sloped insulation, we do it all. Our roofers can assist you with re-roofing, roof topping, roof insulation, custom curbs, and waterlogging.


Contact us to learn more about our commercial roofing services in Alberta.

Brands We Use

We have associated with the top-of-the-line brands for all our roofing repairs and installation services. The following are some of the trusted brands we use for repairing and installing roofs.

All these brands are certified and licensed under the Canadian Health Act.

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Free Assessment

Our professional team will visit your property for a thorough assessment of your commercial roof to suggest you the best possible solutions.