Tag Archives: commercial roofs

Different types of commercial roofs

There are mostly Tyree different main components in commercial roofing systems:

  • surfacing- this component is the protector from weather, sunlight and generally weatherproofing and reinforcement. These also come with other benefits such as an improvement in hail and fire resistance and solar reflectivity.
  • weatherproofing layer – this can be hailed as the most important as it is the element that will keep moisture from entering the roofing system.
  • reinforcement- this ads stability , puncture resistance and a general strength to a membrane.

There are five different types of commercial roofs you can consider is you are building a new roof or replacing an existing one.

Green Roofs

In the past few years, green roofs have had the biggest influx of installation of all the roofing systems out there. These roofing systems are normally flat and are completely or partially covered by plants and vegetation over a waterproof membrane. Green roofs significantly improve the insulation value of a roof, while minimizing the build up of heat by soaking up the suns rays into the greenery on the roof. These systems extend the life of the roof up to three times longer, and this saves on air conditioning costs.

Built-Up Roofing (BUR) System

flat roofs, metal roofs, EPDM roofsAs the name suggests, these systems are the more traditional way of building arrow and it usually entails layers of sheets that have different functions such as base and interplay sheet and theres usually a c scubas a gravel of possibly a different type of coating.

Asphalt technologies have been at work in this industry since the 70’s and three are a few types used.  SBS styrene-butadiene-styrene and APP or atactic polypropylene both offer asphalt with a rubber or plastic characteristic when cured. These are a definite improvement in performance for the asphalt. When combined with reinforcements, such as fiber glass and polyester, the form an extremely high performing membrane for a roof.

APP’s are membrane that adhere to a roof using a torch. SBS can also be setup where they can be installed using a torch, however they usually are applied with a modified cold adhesive, or a hot asphalt. Whatever the angle of approach, what you end up with is a BUR system that has ecceptional capabilities in performance. Technologies continue to advance and there are self adhering SBS membranes as well.


These roofing systems also known as TPO’s are increasing in popularity for flat roofing Toronto. These are extremely durable materials that have an extreme tolerance of temperature, chemical exposure, ozone  and ultraviolet. These roofs have long lifespans and are also highly fire resistant.


Many people are shifting to sustainable/reusable energy as costs are continuing to rise, and for this reason solar energy is being harnessed more than ever. Photovoltaic panes are installed on a roof top and absorb the suns rays which convert that into energy for the building. Initial costs are high, but they do pay for themselves after an allotted time.


These systems are one of the longest lasting roofs available on the market. They are extremely versatile and durable. Generally they are very easy to instal and maintain as well.

These are all great choices for any commercial application. When choosing which to go with, finished appearance, site access, structural load, desired warranty and other criteria should be considered.

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