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Windows catalogue
You’ll find a wide selection of premium Energy Star FGIA (AAMA)–certified PVC, hybrid, and dual hybrid custom windows available in a full range of premium features and options. Whatever your project, you can count on us for advice and windows that meet your needs and the highest quality standards.
Casement
Casement windows open by rotating outward on one side. Classic, versatile, and one of the highest-performance window types available. Many homeowners choose casement windows every year because of their many features.
Awning windows
The awning window is one of the most popular window types in Quebec. Initially used in commercial buildings, awning windows are now fashionable in homes too with the rise in popularity of contemporary residential architecture. This type of window opens outward by tilting upwards, creating an awning-like shelf you can keep open even when it rains.
Sliding
This window consists of two or more panels that close and open by sliding horizontally beside each other.
Hung windows
This timeless model of British origin has two panes, one above the other. They move vertically to open partially or completely. Mullions are great additions to hung windows.
Architectural
Custom architectural windows can feature the unique shapes, complex details, or design features you need to contribute to your project’s overall look.
Bow and bay windows
These arc-shaped windows stand out for their bespoke manufacturing. They illuminate and enlarge any room, whether built in three sections (bay windows) or four (bow windows).
Not sure where to start?
Visit our blog, YouTube channel, or energy performance page for ideas, answers, and explanations of door and window terms.
Our products
Customers have been turning to Isothermic for over 40 years for a premium experience and products that are always at the right price. Our Quebec-based company offers windows and doors that are guaranteed for life, a unique certified installer program, and outstanding after-sales service.