What Are the Factors to Consider When Choosing a Flat Roof Membrane?

When it's time to renovate or build a flat roof, the choice of membrane is a crucial decision. A well-chosen membrane will ensure the watertightness, durability and overall performance of your roof. But with so many options on the market, how do you know which one to choose? Here are the main criteria to consider when choosing the right flat roof membrane, with particular emphasis on elastomeric membranes, a solution that is becoming increasingly popular in Canada.

1. The Canadian Climate: A Determining Factor

Canada is renowned for its harsh winters, frequent freeze-thaw cycles and occasionally very hot summers. A flat roof membrane must therefore be able to withstand extreme temperature variations. The elastomeric membrane, made from modified bitumen, is designed to offer excellent resistance to temperature variations, making it a wise choice for our climate.

2. Durability and Maintenance

A quality membrane should offer a long service life with minimal maintenance. Elastomeric membranes are distinguished by their durability and longevity, which can exceed 25 years when properly installed. In addition, their smooth surface facilitates water evacuation and limits the accumulation of debris, thus reducing the risk of infiltration.

3. The Type of Building

The choice of membrane also depends on the type of building. For a residential, commercial or industrial building, the needs may vary. For example, a roof that is accessible or used as a deck will require a membrane that is more resistant to wear and tear. The elastomeric membrane, with its gravel or slate finish, can be adapted to different uses while maintaining its waterproofing properties.

4. The Budget

Although the elastomeric membrane represents a higher initial investment than some other options (such as TPO or EPDM membrane), it offers excellent value for money in the long run. Its durability and low repair frequency make it a cost-effective solution over several decades.

5. The Installation: A Job for Professionals

The installation of a flat roof membrane, especially an elastomeric membrane, requires specialized expertise. It is usually installed hot, using torches, which requires certified and experienced installers. Improper installation can compromise the effectiveness of the membrane, regardless of its quality.

6. The Aesthetics and Finish

Often neglected, the visual aspect of the membrane can play an important role, especially if the roof is visible or accessible. Elastomeric membranes offer different finishes (slate, gravel, colour) that can harmonize with the architecture of the building. A good choice of finish can improve the overall appearance while also contributing to protection from UV rays.

Trust René Perron Couvreurs

At René Perron Couvreurs, we understand the importance of choosing the right membrane for your flat roof. With more than 50 years of experience in the roofing field, our team accompanies you every step of the way: from the evaluation of your needs to the professional installation of your elastomeric membrane.

Do you have a roofing project? Contact us today for a free quote and learn more about our roofing solutions.