Bow Windows

Bow windows transform the entire look and feel of your home, projecting out from the exterior wall and forming an eye-catching curve. Constructed with four or more windows, this style provides great ventilation and allows a lot of natural light to come into the home. They create a unique look on the outside of your home and a cozy nook on the inside. These windows provide an excellent view of the outdoors and the deep sill is perfect as a display area for decorations or family photos. Centennial’s bow windows are not only beautiful, but are also energy efficient, saving you money on your heating and cooling costs. Popularly used in master bedrooms, kitchens, and living rooms, the elegant arches of this style add a luxurious and refined look to your home.


Colour Coatings

Available in 26 standard exterior colours.

  • Applied in our factory by expert coating technicians
  • Custom colour options are available

Find a match for any exterior colour!

Argon Gas

The inert gas, argon, is used to fill Centennial’s double glazed sealed glass units.

  • Colourless and odourless
  • Heavier than air

Argon improves energy efficiency by slowing heat transfer through the glass.


Add traditional charm to your home with grill patterns.

  • Located between the glass – no dust
  • Several finish and configuration options

Customize your look for a charming upgrade!

Super Spacer

Super Spacer is a non-metallic, silicone rubber material used in both double and triple glazed units.

  • Separates the pieces of glass in sealed units
  • Allows the glass to flex

Preserve the integrity of your sealed unit and resist glass fractures.

Cedar Shims

Premium cedar shims keep the unit level, square, and plumb.

  • Pre-engineered for consistency of shape and size
  • Contain natural oils to repel moisture

They will operate the same as they did the day they were installed!

Mitred Corners

Designed with longevity in mind, all corners of our frames and sashes are cut at a 45° angle.

  • Also known as a Carpenter’s Finish
  • Provides superior strength in comparison to 90° butt joints

Improve the strength and keep them operating properly year after year!

Several years ago we replaced a bow window with Centennial, and we have been very happy with them. We have noticed a big change in our heating and cooling bills. They are not only easy to clean, but quieter as well. We recently decided to change our front door and once more, we went to Centennial. We couldn’t be happier. Not only can we not see through the edges of the door, but the curtains in the house aren’t blowing around either. Also, the installers were absolutely excellent, and even cleaned up after themselves. We will not hesitate to recommend Centennial to our friends.
Len La Salle, ON


Can I install a bow window in any room in my house?

This style is a beautiful addition to any home, however, there are limitations to where they can be installed because they project out from the exterior wall of your home. If you are looking to install a new bow window where one does not currently exist, you must make sure that you have adequate clearance on the outside of your home for the unit’s support system. If you already have one in your home, there shouldn’t be any problems upgrading it to a newer, more energy efficient model.

Do bow windows have screens?

Traditionally manufactured from a combination of fixed and operational styles, any operational styles used will have screens. Casement screens are on the inside of your home, and double hung screens are on the outside. Whichever style you choose, you can easily remove the screens from the inside of your home for cleaning.

How big should a bow window be?

Two considerations when determining the size are the number of windows — the minimum being four — that you would like in the opening, and their styles. Also, the styles you choose will have minimum size requirements, so be sure to book and in-home consultation to ensure that these specifications are being taken into consideration.

What is the difference between bow and bay windows?

Bow windows are made of four or more windows that are most often a combination of fixed and operational styles. They form a slight curve as they project away from the exterior wall of the home. Bay windows are constructed from three windows — usually a fixed style in the centre with operational ones on either side. With standard construction, they come together to form two 45⁰ angles.