A passionate team

The "Mongrain tribe" brings together experts from different backgrounds for whom the performance of the building envelope is a real passion. Our advisers know how to spot problems at the source in order to offer you sustainable solutions that maximize your building’s energy performance. Together, our members form a team that is dedicated to saving you time, energy and resources.

Our mission

Mongrain sets itself apart from the competition by offering its clients an advisory service that covers all aspects of protecting the building envelope. With expertise refined over three generations, our experts help you choose the best insulating materials, rigorously plan your schedule and reduce your costs, whether it is protection against bad weather, cold, noise, pollutants or fire, right from the start of your project. This is why the most complex insulation projects are entrusted to us.

Mongrain takes care of all stages of your project, from needs analysis to finishing work. This turnkey management method, which includes the project’s assessment, a recommendation report with a 3D diagram, the realization of the project and the follow-up, allows us to consider the project as a whole and to resolve any difficulties.

A company that is running at FULL SPEED

These are the values that drive our team members.


Ataste for adventure

Team spirit



Taking on extraordinary challenges


Generating results


Master in building envelope (know-how)


Our certifications


Founded in 1955 by Donat Mongrain, Mongrain is the first Quebec company to specialize in thermal insulation. Initially focused on protecting walls, the company developed its expertise over time to include insulation of all kinds, including waterproofing, fireproofing of the building and other related services.

Donat Mongrain then hands over the business’ reins to his son, Raymond Mongrain, and the company is increasingly establishing itself as a leading player in the industry.

Then, in 1995, Karl Mongrain took over at the helm of a third generation of experts. Following the acquisition of various comparable companies, Mongrain continues to expand and is entrusted with projects by large firms such as Hydro-Québec, SNC-Lavalin, Pomerleau, Aluminerie Alouette, QIT fer et titane and many others.

In 2005, Mongrain received the Energia award in the Building envelope category. In 2019, the company moves its headquarters to Mirabel. The same year, it received a recognition award as a mentor at the Soirée des Grands Bâtisseurs. The company was also a finalist at the 2019 Salon des meilleures pratiques d’affaires (Best Business Practices Show).

Toujours à l’affût des nouvelles tendances, Mongrain continue à placer l’innovation technologique au cœur de ses priorités. Ainsi, l’entreprise accorde une place importante à la recherche et au développement afin de mettre au point des techniques avant-gardistes et de rester un chef de file dans son domaine. Cela lui permet de proposer à ses clients des solutions durables et éprouvées qui maximisent la sécurité et le confort des occupants ainsi que l’efficacité énergétique du bâtiment.


The Mongrain Campus

In order to ensure the well-being of employees and consolidate the commitment of team members, Mongrain moved its head office to Mirabel in September 2019, in green facilities called the Mongrain Campus.

Designed to maximize occupant satisfaction, this bright and stimulating work environment incorporates the latest technology in ergonomics, and has an equestrian center, trails, a pond, a collective garden as well as a training center. In addition, a passive building being designed will be completely disconnected from the electricity supply services.

Would you like to be part of the team?