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Aerial view

  • 1982
    Isothermic Doors and Windows begins with the hiring of three employees.
  • 1983 
    Isothermic Doors and Windows doubles her sales figures; Mr. Fortier enlarges his premises and sets up a building for the offices.
  • 1988 
    Newly incorporated, Isothermic Doors and Windows Inc.  counts over 20 employees. Mr. Marc Sylvain comes in as the new plant director, and has a direct influence on the growth of the production operations.
  • 1990 
    Isothermic Doors and Windows Inc. produces PVC casement windows for the first time.
  • 1998 
    Isothermic Doors and Windows Inc. innovates with her new hybrid casement windows, of the Synergie series. This novelty provides the enterprise with a first prize from the Olympiades Industrielles de la région de l'Amiante.
  • 2000
    Isothermic Doors and Windows Inc. wins the Enterprise of the Year title at the Olympiades Industrielles de la région de l'Amiante.
  • 2001 
    The Canadian Chamber of Commerce grants to Isothermic Doors and Windows Inc. the SMB industry award as a model of determination and persistence.
  • 2004 
    Isothermic Doors and Windows Inc. introduces its Centenaire window series, a hybrid product composed of aluminum, PVC and wood varieties such as pine, oak and other high-density woods.
  • 2007
    Isothermic Doors & Windows Inc. celebrates her 26th year of incorporation, is determined to move on and to be recognised as one of the leaders of the door and window industry in Quebec.
  • 2008
    Isothermic Doors & Windows Inc. is the winner of the Zenith prize, as Manufacturer of the Year, in the 20+ employees category.
  • 2009
    Completion of the plant expansion project in order to meet with the increase in demand for Isothermic's products.
  • 2011
    Creation of a commercial line of hybrid products especially meant for important projects, such as OMH's or other types of building that provide multiple luxury condo units, such as L'Étoile and Humania located in Quebec city.
  • 2012
    Creation of the "Le Fenêtrier" network including the participation of some of our highly rated distributors who have the capacity to offer a turnkey project to their clients, from measurements taken at home to the final stages of window installation.
  • 2014 - april
    Municipal council of Thetford Mines express appreciation of the quality of the new showroom and presented to owner of Isothermic the «Jean-Berchmans-Gagnon» price.
  • 2014 - June
    Automated equipement acquisition for the window-manufacturing plant.
  • 2015 
    Isothermic received the « Zénith Gestion des ressources humaines » Award for human resources management, training initiatives and for updating its practices.
  • 2016 
    Redesigning of the door-manufacturing plant and automated equipment acquisition.
  • Today 
    Isothermic Doors and windows is prood to be in Québec, employ 160 workers from Thetford Mines and the surrounding area and to celebrated 35 years.

370, chemin Mont-Granit Ouest
Thetford Mines, Québec, Canada
G6G 5R7
Phone : 418 338-4628
Fax : 418 338-0347
Toll free : 1 800 905-5234
E-mail :
RBQ Licence : 8102-0000-00

Printed on : January 23, 2021