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What Are Standard Size Windows in Canada?
Aug 17, 2019
Dec 11, 2024
7 min read
56
Understanding the options and choices when it comes to your custom windows can go a long way in helping you make the best choice for your home.
While different window manufacturers come out with different products, basic window components like brickmoulds, jamb extensions, casings, and even frame profile sizes have to line up just right in order for your installation to result in the highest energy efficiency. Let’s take a closer look at how all of these components play together and if they can make standard size vinyl windows.
Standard Size Window Profile
One of the more visible options when it comes to installing new windows, or combining them with existing used windows, is the profile (or the width) of the frame. When it comes to different window styles, the profile will obviously differ, so there is not actually a standard size for it but rather it accommodates to your specific replacement project. But in general:
- Sliding, hung, and end-vent windows generally have a low profile frame
- Casement and awning window generally has a high, or wider, frame
- Fixed or picture windows can be manufactured in both high and low profile options
This is especially important to consider when you’re looking to put in new windows beside existing ones. Make sure to take the window frame profile into consideration, as it is the number one factor ensuring the closest match.
Deciding to go high or low can also influence how much light a certain room receives. A higher profile frame means a lower surface area for the glazing and ultimately less light. Consider the table below.
These calculations were made for the same style picture window. As you can see, the difference between the glass surface area can be fairly significant in smaller windows. Take this into consideration, as well as the existing window types in your home, when looking for new windows.
Standard Size Home Windows Casing
Another more obvious aesthetic feature of your windows and doors is the casing or the trim around them. While different manufacturers can carry different sizes, vinyl casings for standard size windows in Сanada are usually: 2 5/8 inches or 3 3/8 inches.
Casing for round shaped windows is usually 2 and 5/8 inches. The size of the casing used also depends on the size of the brickmould used for your replacement.
Brickmould Standard Sizes
A brickmould is a strip of material, on the exterior, used to close the gap between the wall and the frame of the window. It also acts as a seal against water and air infiltration.
For standard Canada windows and doors replacements, the brickmould size is usually made to match the brickmould on the existing windows.
Most often 1-inch brickmoulds are used for replacement, but can vary from 3/4 of an inch to an inch and 7/8th. In special cases, bigger plank brickmould can be used.
Jamb Extensions Standard Sizes for Window Replacements
A jamb extension is a piece of material that covers the exposed part of the rough opening while connecting the casing to the frame of the window. The size of the jamb extension depends on the width of your custom window.
These widths are different for different manufacturers, and several standard sizes of jamb extensions exist. Our windows, for example, are made 3 and 1/4 inches thick. For houses with 2×4 wall construction, the installation usually requires 1 and 3/8-inch jamb.
Houses with 2×6 wall construction use 3 and 3/8-inch jambs. Be mindful of the outside finish on your house. Siding, for example, may require longer jamb extensions. The manufacturer also offers jambs in 2 and 3/8 inches and 4 and 5/8 to match individual finishes on different houses.
Understanding how different parts come together to make an energy-efficient window can go a long way in helping you determine the type of windows you would like to see in your home. It can also go a long way in preparing you for your consultation appointment and ensuring you ask the right questions.
All these factors contribute to limitations when it comes to maximum window sizes companies can manufacture. The chart below demonstrates the maximum standard window sizes for common window types that our production line makes.
Maximum Window Sizes in Canada
If you want to complement your home with energy-efficient windows that will bring maximum comfort, value and adequate thermal performance year round, installing stock windows from big retailers won’t do the job.
That’s why homeowners usually shop for custom windows from reliable local companies to install replacement windows specifically designed for their house conditions, energy requirements, region, etc.
Below, you will find a chart with maximum sizes for popular window styles, but when it comes to something more frequently installed, the sizes go as follows:
- standard size sliding windows: 36×24, 48×24, 60×24 inches
- standard size of double hung windows: 24×36, 24×46, 28×54 inches
- standard size casement windows: 24×36, 24×48, 30×36 inches
- standard size single hung windows: 24×36, 24×46, 28×54 inches
- standard size picture windows: 24×24, 36×36, 48×48 inches
Keep in mind that both maximums can’t be used at the same time. What is more important is that the maximum square footage is maintained within the parameter.
What is The Standard Size for Basement Windows?
Basement windows are often installed when homeowners convert their basements into liveable spaces. This transformation typically requires windows that meet egress requirements, ensuring safety and compliance with building codes. In Canada, egress windows are necessary for any space used as a bedroom or living area to allow emergency exits.
The standard size basement windows varies depending on the design. Still, they must provide an unobstructed opening of at least 0.35 square metres (3.77 square feet), with a dimension of at least 380 mm (15 inches).
When planning a basement renovation, always ensure your windows comply with local building codes to create a safe and functional living space.
F.A.Q
What are standard size windows?
Standard windows typically range from 24 to 72 inches in width and 36 to 80 inches in height. These dimensions vary by window style, such as casement, sliding, or picture windows. But still, custom windows are recommended to accommodate your replacement project perfectly.
What is the standard size for basement windows?
Basement windows vary but must meet egress requirements for livable spaces. In Canada, egress windows need an unobstructed opening of 0.35 square metres (3.77 square feet), with no dimension less than 380 mm (15 inches). Common styles like casement or sliding windows are ideal for meeting these safety and functional standards.
Why can’t windows be manufactured above maximum size?
Windows have size limits due to structural integrity and safety concerns. Larger glass panes may risk breakage, compromise energy efficiency, or strain window frames.
Why install custom windows?
Custom windows allow homeowners to achieve perfect fits and tailored designs for unique spaces or non-standard openings. They improve energy efficiency, curb appeal, and functionality. While they may cost more, custom windows provide a lasting solution for hard-to-fit spaces and add value to your home.