Window Anatomy — What You're Getting
Every GreenFox window is built with components chosen specifically for performance, durability, and energy efficiency in Alberta's extreme climate.
5 7/8" Fusion-Welded Frame
100% pure virgin vinyl — 20% thicker than the recycled vinyl competitors use. Each corner is precision-mitered and fusion welded using heat and pressure, creating a permanent bond that never separates. Lead-free PVC designed to last a lifetime. Won't warp, crack, or yellow.
Triple-Pane Argon Glass
Three layers of glass with argon gas fill between each pane. 1 3/8" overall glass thickness available. Superior insulation for Calgary's −40°C winters — keeping your home warm without running the furnace overtime.
Dual Low-E Coatings
Invisible coatings that reflect heat back into your home in winter and block UV rays in summer. LoE 366 blocks 95% of damaging UV rays. Combined with LoE i89 on the room-side surface, you get triple-pane performance that keeps your home comfortable year-round.
Intercept® Stainless Steel Spacer
The U-shaped stainless steel spacer flexes naturally with temperature changes — reducing stress on seals and retaining argon gas longer. Known for crisp sight lines and exceptional durability. One of the strongest spacer choices available for our climate.
Drainage Flaps (Not Punch Holes)
Unlike competitors who punch holes in the frame for drainage, our windows use engineered flaps that only open when water needs to drain. When closed, they keep insects, dust, and cold air out. A small detail that makes a big difference in your comfort.
Multi-Point Locking Hardware
Heavy-duty hardware with multi-point locking for security and a tighter seal. Sash keepers keep everything aligned for smooth operation every time. Casement windows open to 90° for easy cleaning.
Glass Technology — Where the Energy Savings Happen
In winter, your windows bring in heat energy during the day while reducing heat loss at night. In summer, the same technology prevents hot air from entering. The result: lower energy bills year-round.
Low-E Coating Options
We offer a wide range of Low-E coatings from leading glass manufacturers. The right coating depends on which direction your windows face and your priorities — warmth, UV protection, or balanced performance.
Ideal for south-facing windows. Lets the sun help heat your home naturally in winter. High solar heat gain, great for cold climates. U-Value ~0.260.
The all-rounder. Blocks 84% of damaging UV rays while maintaining energy savings. Good balance of light, heat, and protection. U-Value ~0.250.
Blocks 95% of UV rays. Maximum protection for furniture, floors, and your energy bill. Our most advanced standard coating. U-Value ~0.242.
Applied to the room-side glass surface. Reflects escaping heat back into your home. Can be combined with other coatings to boost performance in dual or triple pane.
Maximizes visible light at ~64% transmittance while still reducing heat loss. Great for rooms where natural brightness is a priority. SHGC ~0.54.
Balanced solar control with good visible light. Reduces summer heat gain while keeping rooms bright. ~55% visible light transmittance. SHGC ~0.40.
Maximum solar heat rejection for west-facing windows that get intense afternoon sun. Lowest SHGC ~0.27. Keeps rooms cooler in summer.
High-performance solar control glass that blocks heat while maximizing light. Excellent for large window walls and south/west exposures. Neutral aesthetics.
Top-tier solar control with the highest visible light transmittance in its class. Virtually clear appearance while blocking significant solar heat gain.
Not sure which coating is right? Adam will recommend the best Low-E package based on your window orientation, budget, and energy goals during your consultation.
Endur IG™ Spacer Bar System
The sealed unit is only as good as the spacer holding it together. Our Endur IG system uses four layers of protection to keep argon gas in and moisture out for the life of the window.
Window Styles Available
Every style is available with your choice of glass packages, colors, and hardware finishes.
Casement Windows
The most popular window style in Calgary. Opens outward with a crank handle, creating a tight seal when closed. Available in all series with your choice of glass packages.
- Multi-point locking for maximum security and air-tight seal
- Opens to 90° for easy cleaning from inside
- Triple weather seals and overlapping screen frame
- Heavy-duty handle with concealed internal drainage
- Sash keepers for perfect alignment every time
Single & Double Slider Windows
Slides horizontally for ventilation. Perfect for areas where you don't want a window projecting outward, like over a walkway or patio.
- Smooth glide operation with no mechanical parts to fail
- Dual interlocking rails for a tight seal
- Proprietary fly-maze keeps insects out
- Night latches for secure ventilation while you sleep
Awning Windows
Hinged at the top and opens outward from the bottom. Perfect for ventilation even during rain — the open sash acts as a rain shield. Ideal for basements, bathrooms, and above kitchen sinks.
- Ventilate in rain — sash deflects water away
- Multi-point locking for superior air-tight seal
- Great stacked above or below fixed picture windows
- Triple weather seals and concealed drainage
Single & Double Hung Windows
Sashes slide vertically for maximum ventilation control. A classic look with modern engineering — perfect for traditional Calgary homes.
- Constant force balancers — stays open where you leave it
- Heavy-duty cam lock and keeper hardware
- Finger latches for easy tilt-in cleaning
- Night latches and drainage flaps standard
Bay & Bow Windows
Create a stunning focal point and expand your living space. Factory assembled with foam-filled couplers for added insulation. Available in standard or custom angles.
- Foam-filled couplers for superior insulation
- Bay: 30° and 45° angle options
- Bow: 10° and 15° gentle curves
- Factory finished interior, fully assembled
- Optional insulated head and seat board
Picture, Fixed & Custom Shapes
Fixed picture windows for maximum light and unobstructed views. Custom shapes including arches, circles, and geometric designs to match any architectural style.
- Custom shapes: arches, circles, trapezoids, octagons
- Specialty glass: frosted, textured, decorative patterns
- Maximum glass area — thinnest frames for unobstructed views
- SimplyClean™ self-cleaning glass coating available
Customize to Match Your Home
Dozens of exterior vinyl colors including custom-made options, hardware finishes, grill patterns, and trim options — your windows should look like they belong.
Exterior Colors
Dozens of colors from classic white to Black, Iron Ore, Forest Green, and more — plus custom color matching available. Protected by a 15-year Solar-Bond™ exterior color warranty against fading, peeling, or chalking.
Interior Finish Options
White, almond, and custom interior finishes to match your home's décor. Clean, maintenance-free vinyl that never needs repainting. Consistent color throughout the frame.
Hardware Finishes
Choose from white, coppertone, oil rubbed bronze, satin nickel, and faux oil rubbed bronze. Match your door hardware and home fixtures for a unified look.
Grill Patterns
Interior, exterior, or simulated divided lights (SDL) in various patterns. Colonial, prairie, diamond, and custom configurations to match any home style.
ETI Insulation Upgrade
Engineered Thermal Insulation fills unused frame cavities with rigid insulation. Improves the energy rating by 3 ER points. The "best" option for maximum efficiency.
Trim & Casing
PVC Colonial, Roman, or pine/oak casing options. Multiple brickmould profiles from 7/8" to 3 15/16". Wood or vinyl jamb extensions in primed, pine, poplar, oak, or PVC.
Triple Weather Seals
Most competitors use one or two weather seals. Every GreenFox window has three continuous seals around the entire sash perimeter — creating an air-tight barrier against Calgary's extreme wind, cold, and rain.
Cross-section: Three continuous seals around the entire sash perimeter
Why GreenFox Windows?
Multiple product series available to match every budget and performance need — all built with the same premium Alberta-made quality.
Lifetime Warranty
Every window backed by a comprehensive lifetime warranty on frame, glass, hardware, and labor.
Alberta Made
Manufactured right here in Alberta for Alberta winters. Local production means faster delivery and better support.
15+ Years Trusted
Consumer Choice Award winner 15 years and counting. Trusted by thousands of Calgary homeowners.
Your Project Manager: Adam
I didn't start behind a desk — I started on the ladder. I installed windows for 5 different companies before joining GreenFox as an installer. I know every step of this process because I've done it myself, thousands of times.
