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SILEX Fiberglass Windows & Doors

Canadian Craftsmanship, Lasting Quality​

High-Performance Fiberglass Windows & Doors

Introducing

PH 95 - Passive House Certified Fiberglass Window

Meet the new standard for the Canadian building envelope: The SILEX PH95 Series.

Engineered specifically to solve structural and thermal weak points in demanding climates, this inward-opening, operable (Tilt + Turn) window system has officially achieved Passive House Certification from the Passive House Institute (PHI) under the phB efficiency class.

Engineered for Energy Efficiency and Longevity

Fiberglass Windows & Doors Product Collection

Key Benefits & Performance

Our Pultrusion Process​

The Pultrusion Process is a manufacturing technique used to produce fiberglass windows and other composite materials. It is widely used for Canadian-made fiberglass windows as it ensures durability and energy efficiency, ideal for extreme weather conditions.

Durability and
Low Maintenance

Our pultruded fiberglass is inherently stable, boasting a 50+ year lifespan with virtually no maintenance required. It’s the ultimate “high-performance, low-effort” solution for the modern building envelope.

The Sustainability of Fiberglass

Backed by a verified EPD (Environmental Product Declaration), our durable, resilient design promotes a circular economy while providing the transparent data needed for modern green building standards.

Superior Thermal Efficiency

We leverage the natural power of fiberglass to outperform the competition. By matching the expansion rate of glass, our products maintain a permanent airtight seal, reducing your energy costs and enhancing home comfort.

Fiberglass Windows Exterior Doors Sliding Doors Patio Doors Entrance Doors

SILEX is proudly Canadian-owned, specializing in innovative fiberglass windows and doors. From new homes and commercial projects to year-round renovations and replacements, we serve customers across Canada and the U.S., offering fiberglass windows, sliding doors, custom entry doors, and Curtain Wall System that set the standard in durability, energy efficiency, and modern design.

École Waterford Springs School front entrance with SILEX fiberglass windows
École Waterford Springs School with high-performance fiberglass windows
Custom black fiberglass front door
SILEX - Project Highlights - Vancouver
Métis National Heritage Centre exterior facade
Kenora housing project with SILEX fiberglass windows
Collaborating with the Best In Class

Industry Partners

We pride ourselves on collaborating with the best-in-class partners in the industry to deliver unparalleled quality in fiberglass windows and doors.

We Build Inspired Space​

Our Featured Projects

Our fiberglass solutions offer unparalleled performance, resisting warping, cracking, and weathering even in Canada’s toughest climates. Whether you’re looking to elevate the aesthetics of your home or enhance its energy efficiency, SILEX delivers the best products to suit your needs.

Latest Resources & Insights
Modern commercial building with dark window frames separated between storeys by a noncombustible façade.

National Building Code 2020 Changes

Learn how Canada’s building code change affects combustible window frames, fiberglass windows and their use in noncombustible construction.
Explore SILEX fiberglass window systems for durable, energy-efficient performance built for Canada’s climate.

Fiberglass vs Vinyl vs Aluminum Windows in Canada

Discover why SILEX fiberglass offers superior thermal performance and Design Without Compromise for large openings.
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