Measuring a Window: How to Do it Properly

Knowing the proper way of how to measure a window is useful, especially when you’re planning on replacing your old ones.

Windows are the most noticeable feature of your house, and well-maintained ones make a statement of welcoming guests warmly to your beautiful home.

However, badly maintained windows make your house look dilapidated and off-putting. Replacing them gives your home a fresh new look. You could try to replace them yourself, but hiring a professional will save you money in the long run.

Either way, it’s a good idea to know how to measure a window.

How to Measure a Window Properly

It’s important to get the correct measurements, so you don’t have to send them back and order the proper size, which takes time and costs money.

Incorrectly measured windows can also lead to a number of problems, including leakage, mold, and structural damage. It’s necessary to take the following steps to prevent problems from occurring.

Horizontal Measurements

It’s not good to measure one point on your window opening and call it a day. To get accurate measurements, you must use a tape measure at three points, jamb to jamb at the top, center, and bottom. If there is a discrepancy, you need to take the smallest number.

Now your job is done because your window manufacturer and the installer will use the data to calculate the correct window size. The rule is to deduct a ¼ inch from the number and cut as closely as possible. In addition, there’s a ⅛ margin when cutting window width.

Vertical Measurements

As with horizontal measurements, it’s not enough to measure from just a single point. You must use at least two points for small to medium windows and three points for medium to large windows to get the accurate length.

Professionals prefer three points for greater accuracy, this is to measure jamb to jamb on the left, middle, and right sides. The smallest measure is used as a basis for other calculations, including the window frame.

Once again, the manufacturer will deduct a ¼ inch and cut to an ⅛ inch margin.

Depth Measurements

To get an accurate depth measurement, you’ll need to measure edge to edge at least three times on all four sides.

Are there Standard Window Sizes?

No, there is no set standard for window size. This is because the dimension varies from house to house and even from room to room. Just a few inches on either side will require bigger or smaller panes of glass, which will have to be specially cut.

If you don’t want to pay for custom windows, you can contact several glass window manufacturers in your city to see if they have a standard size in their company. There are those who have their own sizing for small, medium, and large windows, so you can find the company that provides measurements closest to yours.

In this case, you should be aware that standard sizes may vary considerably and should be used as a guide only. For example, the width of a single-hung window could be 24 inches to 48 inches, and its height could be 24 inches to 60 inches. The variation for picture windows is more significant, with an average width of 28 inches to 52 inches and an average height of 12 inches to 96 inches.

Consequences of Incorrect Window Measurements

Windows with the wrong measurements need to be sent back to the manufacturer, and new sizes reordered. As a result, you may end up having to wait double the time, and the costs will increase.

Sometimes it’s tempting to go with a dodgy window installation service provider who has a close enough approach. You’ll find that they might get the window installed, but the problems will surface soon enough.

Risks of Incorrectly Measured and Poorly Installed Windows

Your budget will really be blown if you have to replace the windows and repair the damage done—not to mention the extra time it would take to get things in order. Moreover, the disruption this may cause your household can become unbearable.

Here are probable problems you can avoid if you hire a reputable, experienced, and knowledgeable team, these include:

Windows Won’t Open or Close Properly

Windows that don’t fit are one of the main problems. If they’re too big for the opening and were somehow forced into place, they probably won’t open. They’re firmly wedged in and will likely crack if you really put your back into them. There’s also the risk that your dodgy installer cuts corners elsewhere and that pushing the window breaks the frame.

If you manage to get it open, you may find that it refuses to close, and pulling too hard could crack the glass and break the frame.

Windows that are stuck open can still have a lot of flaws. Rain can seep in and distort the frame even more, causing the glass to crack. The moisture can also affect the area around the window, causing water damage to your walls and floor—allowing mold to grow. This is not only unsightly, but it also presents health hazards.

Open windows also let air in and out. If it’s winter and you have your heating system on, the hot air will escape through the opening, and your system has to put in extra effort to warm your home. This bumps up your utility bill.

During summer, when your aircon is running to keep your home cool, the opening allows the coldness to escape and can bring in hot air from outside. This could be a temperature regulation nightmare and may cost a fortune.

Gaps Between Windows, Windowsill, and Frame

Gaps have much the same effect as windows that won’t close. You’re looking at drafts, increased energy consumption, water damage, mold, and structural damage to the frame and walls.

Gaps can be caused by not enough sealant around windows that are too small for the opening and can also be the result of windows that are uneven. Unevenness could also be the result of a window that is too small for the opening as the installer tries to hold it in place while applying the plaster that keeps it in position.

Knowing How to Measure a Window Gives You an Understanding of the Installation Process

Given the effect that correctly measuring your windows has on the entire installation process and on your home in general, it’s highly recommended that you ditch any ideas you have about DIY.

Hiring a company specializing in window manufacturing and installation is far better. To arrange a consultation to determine your precise needs and learn how to measure a window properly, contact us at 877-590-2741 at Euroline Steel Windows and Doors today!

Author: Elyas Balta

Experienced Chief Executive Officer with a demonstrated history in innovation and scalability in the luxury building materials industry. Passionate about inspiring and empowering others to grow in character and success. Determined in bringing art and engineering together to create and manufacture an exotic product line of steel windows and doors.