Bay & Bow Windows Prices
What Are Bay & Bow Windows?
Bay windows combine a large stationary (picture) window in the center and two operable casement windows that flank it on either side. The angled window unit provides extra seating area for a unique design feature. The picture window feature allows more natural light to penetrate the room while the operating windows provide extra ventilation.
Ecoline bow windows combine four or five casement windows mulled into one continuous unit. They are designed to arch out with a cantilevered construction to provide a window seating area and wide views from every angle. The units can combine stationary and operable casement windows for extra ventilation.

Ecoline’s Hassle-Free Warranty
We are local, transparent and strive to build long-term relationships with all our clients. Your satisfaction is our reputation. That’s why all our windows come with a direct warranty from the manufacturer on:
- Vinyl Frame
- Seal Failure
- Hardware
- Installation
- Labour
Ecoline’s
Hassle-Free Warranty
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Window Frame Colours
Ecoline offers a wide range of colour options to match your new Bay window with your home’s exterior/interior. The most popular colours for our Bay windows are White, Commercial Brown, Black, Chestnut Brown, Sable, Slate Grey, or Cream. In addition, you have an opportunity to select a custom shape for your new Bay replacement window.
Custom Windows Prices
*Note that the prices given in the table are approximate.
| Size | Double pane | Double pane painted | Triple pane | Triple pane painted |
|---|---|---|---|---|
| 46*38 (C/P/C) | $1,715.8 – $2,277 | $1,843.64 – $2,390.41 | $1,798.7 – $2,350.54 | $1,712.9 – $2,463.95 |
| 46*38(F/P/C) | $1,593.41 – $2,192.94 | $1,702.9 – $2,290.07 | $1,676.31 – $2,262.8 | $1,758.8 – $2,362.48 |
| 70*58(C/P/C) | $2,313.49 – $3,057.27 | $2,463.51 – $3,203.87 | $2,438.14 – $2,719.86 | $2,588.15 – $3,326.47 |
| 70*58(F/P/C) | $2,189.06 – $2,932.84 | $2,320.43 – $3,060.79 | $2,313.71 – $3,055.43 | $2,445.07 – $3,183.39 |
| 110*70(C/P/C) | $3,557.75 – $4,447.28 | $3,780.51 – $4,670.04 | $3,780.45 – $4,669.98 | $4,003.21 – $4,892.79 |
| 110*70(F/P/C) | $3,440.51 – $4,330.04 | $3,651.33 – $4,540.86 | $3,663.21 – $4,552.74 | $3,874.03 – $4,763.56 |
Come Visit Ecoline in Your City!
We are always happy to chat with our customers face-to-face. Feel free to visit any of our showrooms across Canada to learn more about our products and services.
Double & Triple Bay Windows
Glass panes are the largest area of any Bay window and the most vulnerable to heat loss and gain. To provide adequate thermal performance for harsh prairie climates, a minimum of 2 panes are required. Traditional 7/8″ double glazing options are used and can accommodate 1-1/4″ for all Bay windows.
In areas with prolonged low winter temperatures, triple pane windows will perform best. Ecoline triple glass packages qualify for high energy-rating standards with 1-3/8″ and 1-1/4″ options available. Can be used in combination with gas injection and/or LoE glass coatings but are not necessary.
Find out more benefits of triple pane windows over double pane
F.A.Q.
What are the most popular Bay window types?
Ecoline offers you the two most popular window types – Bay and Bow. Bay windows are made of a picture window in the center and two operable casement units, while Bow windows combine four or five windows into one continuous unit.
What are the best Bay replacement windows?
Ecoline experts consider the triple-pane Bay replacement windows with LoE and Argon as a go-to option when it comes to overall performance.
What is the difference between a Bow and a Bay window?
The main difference lies in the number of units. While the Bay replacement window is made of 1 picture and 2 casement unis, the Bow window comprises 4-5 units.
How much does it cost to add a Bay window?
Since the Bay window is made of several units (a picture window + 2 casement windows), it will usually cost significantly more than regular windows. To get a precise quote, please contact the Ecoline project consultant.
Which rooms would look best with Bay windows?
Usually, Bay Windows are installed in living rooms since these units are perfect for letting a lot of natural light into your area and providing excellent ventilation.
What is the best frame material for Bay replacement windows?
At Ecoline, we consider vinyl replacement Bay windows as the best option.
Energy Efficiency Certifications & Tests
All our windows and doors meet the latest NAFS-22 standard, ensuring superior performance. This updated certification sets stricter performance requirements compared to former NAFS-11 tests, meaning our products withstand harsher conditions while maintaining structural integrity. All our windows and doors meet the latest NAFS-22 standard, ensuring superior performance. This updated certification sets stricter performance requirements compared to former NAFS-11 tests, meaning our products withstand harsher conditions while maintaining structural integrity. Learn More
Enhanced energy efficiency
Superior air infiltration performance
Maximum water resistance
All our windows and doors are ENERGY STAR® certified, meeting the highest standards for energy efficiency in Canada. This means lower energy bills, a more comfortable home, and reduced environmental impact.
Minimum Energy Rating of 34
Lower heating & cooling costs
Reduced carbon footprint








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