Yes. A white roof reflects more solar radiation than a dark roof, reducing heat buildup inside the building and lowering the demand on air-conditioning systems.
Actual savings vary depending on the roof area, the building’s insulation, occupancy levels, and the existing cooling system. However, the benefits can be especially significant for commercial and industrial buildings.

TPO membranes are generally less expensive to install and provide excellent solar reflectivity due to their naturally white surface. Elastomeric membranes, which are very popular in Quebec, are known for their durability and resistance to temperature fluctuations, mechanical impacts, and freeze-thaw cycles.

Not everywhere. In Montreal, several boroughs require white, reflective, or green roofing for flat-roof replacements and new construction to help reduce the urban heat island effect. However, requirements vary by municipality and borough.

Yes. An inverted roof can be just as watertight as a traditional roofing system. The order of the system’s components is simply reversed: the waterproofing membrane is installed directly on the roof deck, with the insulation placed above it.
This design protects the waterproofing membrane from ultraviolet radiation, temperature fluctuations, and weather exposure. Inverted roofs offer several advantages, including potential savings on installation and project materials.
However, repairs can be more complex because the materials above the membrane must be removed before it can be accessed. Before choosing this type of roofing system, consult an LK Toitures expert.

Municipalities are increasingly adopting regulations governing roof colours for new construction and roof replacement projects. In some areas, building owners are required to install a white roofing membrane because it helps reduce the urban heat island effect and can lower cooling costs during the summer.
Most roofing membrane systems are available with a white finish. An LK Toitures expert can explain the advantages and disadvantages of each option and help you choose the best membrane for your building and budget.

The lifespan of a roofing system depends on the type of membrane, the quality of its installation, the maintenance performed, and its exposure to weather conditions.

As a general rule, the average lifespan of roofing membranes with a proper preventive maintenance program is as follows:

Elastomeric membranes: Approximately 25 years, depending on maintenance, exposure to weather conditions, and activities performed on the roof.

Built-up roofing (asphalt and gravel): Approximately 20 years, depending on maintenance, exposure to weather conditions, and activities performed on the roof.

Single-ply membranes (monolithic, EPDM, TPO, and PVC): Approximately 25 years, depending on maintenance, exposure to weather conditions, and activities performed on the roof.