SILEX Fiberglass Window
Fiberglass Sliding Windows in Canada
Durable, energy-efficient fiberglass sliding windows engineered for Canadian climates. Ideal for homes, condos, commercial spaces, and multi-residential projects.


Fiberglass sliding windows deliver exceptional strength, thermal efficiency, and long-term durability—making them the ideal choice for both residential and commercial buildings across Canada. Designed to withstand extreme cold, wind, and temperature fluctuations, our sliding windows systems offer smooth operation, a modern aesthetic, and superior performance compared to vinyl or aluminum windows.
At SILEX, we specialize in customizing window finishes for both interiors and exteriors to meet your specific needs. Whether you prefer a unique finish or a consistent look throughout your home, we have options to suit your style.
Our fiberglass sliding windows offer superior performance in every aspect. Our proprietary fiberglass material ensures exceptional durability, energy efficiency, and security. The unique weep system and double-roller system guarantee smooth operation and optimal water management.
The three seal design conforms to the rain screen principle.
Single foam filled weather stripping on sash
Dual foam filled weather stripping on frame
Double-glaze windows have two glass panes with argon gas for insulation. Triple-glaze windows add a third pane, offering superior insulation, higher cost, and are mostly used in colder climates.
Glazing Method
The glass is secured by a removable interior glass stop and double-sided closed-cell foam tape on the frame. The glazing cavity is edge-drained and vented to the exterior through concealed drainage and vent holes, ensuring proper water management. The glass stop acts as a rainscreen to prevent water infiltration.
Protect your building from the elements and enhance its aesthetic appeal with SILEX’s Fiberglass Sliding Window

Experience the difference of high-performance windows and doors for both residential and commercial spaces. From cozy home renovations to modern commercial buildings, SILEX delivers exceptional quality, style, and service.