About Us
Canada’s trusted choice for high-performance, energy-efficient fiberglass windows & doors with 15+ years experience
Our Story
Our name SILEX comes from the Latin word for silica, which is the essential element behind both glass and fibreglass. It reflects our foundation in material science and our commitment to sustainability, durability, and enduring design.
We are not just a manufacturer of high-performance fibreglass windows and doors; we also commit to producing products crafted from advanced pultruded fibreglass and precision manufacturing to ensure superior structural stability and long-term performance.
With more than 15 years of industry expertise, our Canadian facility produces solutions for residential and commercial projects. Our fibreglass windows and doors are designed to deliver lasting performance that supports property value for years to come.
At SILEX, we take pride in manufacturing windows and doors where quality is engineered into every detail.
About SILEX
As Canada's leading fiberglass window manufacturer, we combine modern architectural styling with rugged engineering built specifically for our harsh northern climate.
Winnipeg, Manitoba
Vancouver, BC
International Presence
ENERGY STAR Rated Windows and Doors Made in Canada
When it comes to enhancing the energy efficiency of your home, choosing ENERGY STAR® rated windows and doors is a smart investment. At SILEX Windows and Doors, we are committed to manufacturing high-performance, Canadian-made products designed to withstand extreme weather conditions while maximizing energy savings and comfort.
The SILEX Advantages
Elevating Architectural Vision
SILEX windows and doors redefine contemporary style. Our commitment to challenging industry standards results in innovative products that seamlessly blend form and function.
Nurturing Nature, Crafting Tomorrow
Built to last, SILEX products are designed to withstand the elements and provide long-lasting performance. Our energy-efficient designs help you save on heating and cooling costs while reducing your environmental impact.
Your Partner in Exceptional Windows & Doors
We offer comprehensive support, including mock-up testing, field reviews, and compliance monitoring to ensure high-quality installation.
SILEX Excellence in Every Frame
Pultrusion Process
Unmatched Strength and Durability
Pultruded fiberglass windows are built to endure the most extreme climates like what we have in Canada. Their 10x greater impact resistance compared to vinyl means fewer worries and longer-lasting beauty.
Superior Thermal Insulation
Pultrusion offers a sustainable solution with minimal waste and lower energy consumption. Additionally, pultruded fiberglass boasts 500x less thermal conductivity compared to aluminum.
Aesthetics and Innovation
Innovative design meets exceptional performance in fiberglass windows. With a wide range of colour and wood veneer options, these windows offer unparalleled versatility and aesthetic appeal.
Collaborating with the Best In Class
Our Partners
We pride ourselves on collaborating with the best-in-class partners in the industry to deliver unparalleled quality in fiberglass windows and doors.
Real Feedback from SILEX Customers Across Canada
Our Reviews
For over a decade, SILEX has been the go-to supplier for builders, architects, and window dealers across Western Canada. We don’t just sell windows — we build partnerships that help you deliver excellence on every project.
We replaced all our windows with SILEX and noticed an immediate improvement in comfort and energy bills. Zero drafts—even in February!
Laura M.,
Winnipeg, MB
As a builder, I’m always looking for materials that last. SILEX windows are Canadian-made, durable, and reliable. No callbacks, and our clients love the finish.
Raj P.,
Custom Home Builder, Edmonton
Ideal for architects and builders aiming for LEED certification or constructing Net Zero-ready homes, SILEX helps reduce energy consumption without compromising on style or durability. Its advanced composite structure ensures long-term performance, making it a smart, sustainable choice for the future of homebuilding.
Melissa T.,
Project Manager, Ottawa
SILEX fiberglass windows played a crucial role in helping us meet our aggressive energy performance targets without sacrificing design integrity. Their sleek, modern profiles complemented our architectural vision, while the high-performance fiberglass frames delivered outstanding thermal efficiency.
Natalie C.
Project Architect, Toronto
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.