Replacement Windows
Calgary
New windows, replacement windows, repair and service. Built on quality products and expert installations for over 40 years. Manufactured in our Calgary facility.
The Clear Choice for
Calgary Homeowners
When it comes to replacement windows in Calgary, quality matters. Our aluminum-clad wood and premium PVC windows are manufactured right here in our Calgary facility — not shipped from overseas. Every window is built to withstand Alberta's demanding climate while delivering the warmth and beauty your home deserves.
For over 40 years, Calgary homeowners have trusted Cossins for their window replacement projects. Our own in-house installation teams focus on quality workmanship on every project.
From a single replacement window to a full-home renovation, we handle everything in-house: sales, manufacturing, and installation. One team, start to finish.
The Benefits of Premium
Replacement Windows
Energy Efficiency
Dual or triple-pane glass with Low-E coatings and Argon gas fill — engineered to reduce heat loss and lower your energy bills through Calgary's coldest months.
Superior Durability
Extruded aluminum exteriors are designed for Alberta's temperature swings, UV exposure, and chinook winds, with less exterior upkeep than exposed wood. Finishes remain subject to the applicable warranty and care requirements.
Custom Design
6 standard metal-clad exterior colours. Oversized combinations, special shapes, and architectural configurations — built to your exact specifications.
Expert Installation
Our trained in-house teams handle window installation. Proper installation is critical for performance, and we've perfected it over 40 years.
Every Style, Custom Built
Whatever your home's architecture demands, we manufacture it in our Calgary facility. Each window type is available in aluminum-clad wood or premium PVC, with your choice of colour, glass performance, and hardware.
Casement Windows
Hinged at the side and opening outward with a crank handle. Provides maximum ventilation and an unobstructed view. Ideal for hard-to-reach areas above counters or sinks.
Awning Windows
Hinged at the top and opening outward from the bottom. Perfect for ventilation during rain. Often paired above or below fixed windows for architectural interest.
Bay & Bow Windows
Project outward from the wall to create additional space and panoramic views. Bay windows use three panels at angles; bow windows use four or more in a gentle curve.
Sliding & Tilt Windows
Horizontal sliders glide smoothly on tracks — ideal for wide openings. Tilt-in sashes allow easy cleaning from inside. Low-profile hardware for a clean, modern look.
Architectural & Fixed Windows
Custom shapes — arches, circles, trapezoids, and geometric combinations. Fixed glass maximizes natural light and frames your view as a permanent architectural feature.
Two Premium Lines,
One Standard of Excellence
Aluminum-Clad Wood Windows
The best of both worlds: clear hemlock interior frames deliver the warmth and beauty of natural wood inside your home, while extruded aluminum exterior cladding provides maintenance-free durability against Calgary's harsh elements.
- Clear hemlock interior — stain or paint to match your décor
- Extruded aluminum exterior in 6 standard colours
- Ask our team about available finish options
- Dual or triple-pane glass with Low-E & Argon gas
- Truth Encore hardware — smooth, reliable operation
- Special shapes and oversized combinations
- Manufactured in our Calgary facility
Considering replacing wooden exterior windows? Read our repair-or-replace guide for Calgary homes.
Engineered for
Alberta's Climate
Calgary's climate is one of the most demanding in North America — from -35°C winter lows to +35°C summer highs, with chinook winds that can swing temperatures 20 degrees in hours. Our windows are specifically engineered for these conditions.
Our Stress-Free Process
One team handles everything — sales, manufacturing, and installation all work together under one roof. That's the Cossins difference.
Private Consultation
We visit your home, assess your needs, measure precisely, and discuss options — no pressure, no gimmicks.
Custom Manufacturing
Your windows are built to exact specifications in our Calgary facility. Quality control at every stage.
Professional Installation
Our trained in-house teams install your windows. Proper prep, clean execution, thorough cleanup.
Final Inspection
We walk through every window with you, ensure perfect operation, and stand behind our work with a comprehensive warranty.
Schedule Your Private
Window Consultation
Whether you're replacing a single window or renovating your entire home, we'll visit your property, assess your needs, and provide a detailed quote — no obligation, no pressure.