Viana Roofing & Sheet Metal Ltd.


When it comes to commercial roofing, Toronto, a bustling city recognized for its varied architecture and constantly shifting skyline, offers certain difficulties and factors to take into account. The city has a variety of seasons all year long, from chilly, snowy winters to sweltering, muggy summers. Because of this diversity, commercial facilities need to be protected by durable roofing solutions that can survive the elements. We examine the main facets of commercial roofing in Toronto in this extensive guide, offering managers, property owners, and anybody working in the roofing sector insightful information.

Being Aware of Toronto’s Climate Issues

The climate of Toronto is defined by extremes, with seasonal changes in both precipitation and temperature. Summers can bring extreme heat and sporadic storms, while winters bring cold temperatures, a lot of snowfall, and ice formation. Commercial roofs are challenged by these weather patterns, so it’s important to select materials and systems that can withstand a wide range of circumstances.

  • Wintertime Thoughts: Proper insulation and drainage are crucial since snow accumulation on roofs can cause leaks and structural problems. Commercial buildings often have flat roofs, which call for strong waterproofing to stop ice dams and water intrusion. Furthermore, to find and fix possible problems before they worsen, it’s imperative to conduct proactive maintenance and routine inspections throughout the winter.

  • Summertime Tasks: Summertime in Toronto can bring highs and bright sunshine. UV radiation, thermal expansion, and infrequently intense rain can all have an impact on how long roofing materials last and function. Commercial buildings can achieve greater efficiency and lower energy expenses by implementing cool and reflective roofing solutions.

Materials for Roofing in Toronto’s Climate

The performance, longevity, and upkeep of business roofs in Toronto are greatly impacted by the choice of roofing materials, which is an important choice. A comprehensive awareness of the qualities of various materials is essential for making well-informed selections, as they cater to varying demands and tastes.

Redesigned Bitumen Roofs

In Toronto, modified bitumen roofing is a common option for low-slope or level commercial roofs. It is made out of polymer-modified asphalt-based sheets that have been made more flexible and durable. Because of their reputation for withstanding temperature fluctuations, these roofs are appropriate for the environment of the city. To further increase energy efficiency, modified bitumen roofs can be coated with reflecting materials.

EPDM Roofing: Ethylene Propylene Diene Monomer

EPDM roofing membranes have exceptional resilience to temperature changes and UV radiation. Flat and low-slope business roofs are a good fit for single-ply rubber roofing because of their reputation for strength and flexibility. Because of their dependability and low maintenance requirements, EPDM roofing systems can withstand the harsh weather in Toronto.

Thermoplastic Olefin (TPO) Roofs

Another single-ply membrane alternative that’s becoming more and more popular in Toronto is TPO roofing. The heat-welded seams on this material are well-known for offering an impenetrable seal. TPO roofs are resistant to heat, chemicals, and UV rays. Because of their energy-saving reflecting qualities, they help keep buildings cooler throughout the sweltering summer months.

Steel Shingles

Metal roofing systems are long-lasting, weather-resistant, and robust. They work well in Toronto’s winter conditions since they shed snow and ice. Furthermore, metal roofs can reflect sunlight, which lowers summertime energy expenses and heat absorption. Common metal roofing materials come in copper, aluminum, and steel, each with special advantages.


When organizing commercial roofing projects in Toronto, compliance with local construction norms and laws is essential. Municipalities frequently impose strict regulations to guarantee the energy efficiency, safety, and structural integrity of commercial buildings. It is vital to collaborate with roofing experts who are acquainted with Toronto’s codes to handle compliance with ease.

  • Toronto City Code for Buildings

The Ontario Building Code establishes guidelines for building and remodeling projects, and the City of Toronto abides by them. To get the required permissions and approvals, building owners and contractors must make sure that roofing systems adhere to these rules. During the planning and installation stages, it is essential to comprehend elements like wind uplift resistance, fire ratings, and insulation requirements.

  • Green Roof Ordinance

A Green Roof Bylaw that was put into effect in Toronto mandates that certain developments have green roofs. Green roofs support environmental sustainability, stormwater management, and energy efficiency. When contemplating roofing renovations, property owners should research options to integrate green roofing solutions and be mindful of these laws.

  • The Value of Continual Roof Upkeep

For business roofs in Toronto to last a long time and function well, regular roof maintenance is essential. Seasonal changes and a variety of weather may be harsh on roofing materials; therefore, proactive maintenance is an affordable way to spot problems early on and fix them before they get worse.

  • Periodic Examinations

An early method of spotting such issues is to inspect roofs during certain seasons. It’s best to arrange inspections in Toronto before winter to take care of any areas that could be vulnerable to snow and ice, and after winter to evaluate any damage that may have occurred during the colder months. Summertime roof examinations might concentrate on UV damage, problems with thermal expansion, and overall roof health.

  • Cleaning and Draining of Gutters

Flat and low-slope roofs require proper drainage, particularly during periods of high precipitation or snowmelt. Water can flow easily through gutters that are regularly cleaned and maintained, preventing water buildup that can cause leaks and structural problems. In the winter, ice dams can form as a result of poor drainage, which increases the risk to the roof’s structural stability.

  • Fixes and Leak Finding

Once problems are found during inspections, prompt remedies are vital. To stop water infiltration, leaks, broken membranes, and weakened seals need to be fixed right away. To find hidden problems, a thorough leak detection method may combine visual inspections with cutting-edge technology like infrared thermography.

Viana Roofing Toronto

Viana Roofing Toronto is a true leader in the complex world of commercial roofing in Toronto when it comes to navigating it. Viana Roofing has a solid awareness of the particular climate problems faced by the city and is known for providing long-lasting roofing solutions. As a reputable roofing company in Toronto, Viana Roofing is experienced in choosing materials that will last the city’s wide range of weather, from chilly winters to sweltering summers. The company’s utilization of cutting-edge roofing materials and technologies, like modified bitumen, EPDM, and TPO roofing systems, demonstrates its dedication to quality and longevity.

Furthermore, Viana Roofing Toronto demonstrates its commitment to sustainable roofing practices by not only following regional construction norms and laws but also keeping an eye on environmental initiatives. Viana Roofing Toronto is a household name for companies looking for a dependable partner in their commercial roofing projects because of their professionalism, knowledge, and dedication to providing roofing solutions that go above and beyond.

For more information or a quote


Got a project in mind?