How Do You Measure a Window for Replacement?
Are you thinking about replacing your windows? Upgrading your old, leaky windows to energy-efficient ones is a terrific way to weatherproof your home. And the best part? Daring DIYers can replace them on their own.

Steps to Follow for Window Replacement
So, how do you measure a window for replacement? While the process isn’t very difficult, it does require precision. Here’s how to measure your windows for replacement:
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Accuracy is Essential
When recording your measurements, remember that accuracy is key. It doesn’t matter whether you’re replacing a single window or redoing your entire home, it’s important to take your time and measure carefully.
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Check for Square
Once you take your first measurement, you’ll know whether the existing window frame is square. Essentially, this means that all four corners of the window are 90°. If the window frame isn’t square, the new window won’t be able to open.
To check for square, hold the tape measure taut, and measure diagonally from inside the upper left corner to inside the lower right corner. Then, carefully record the measurement. Repeat the process in the other diagonal direction and record that measurement. If the two numbers are within ¼ inch of one another, your window is square. If not, you’re going to want to call an expert.
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Measure the Width

Position the tape measure against the window jamb on both sides. (The jamb is the vertical board running along the window sash, which is where the window opens and closes.) Then, do the following:
- Bottom measurement. Slide the window up and measure from jamb to jamb at the lowest point.
- Middle measurement. Slide the window all the way open and measure from jamb to jamb (aim for as close to the middle as possible).
- Top measurement. Close the window and measure from jamb to jamb at the highest point.
Make sure you carefully record each measurement. Then, highlight or circle the shortest one.
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Measure Window Height

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So, how do you measure a window for replacement? Simply follow the above steps and round your numbers to the nearest ⅛ inch. Then, contact the K&J Windows team to order custom replacement windows for your home.

This will take approximately 20 minutes per window. Yes, it is actually much easier to install a window in a stand-alone house than in an apartment.
Now that you know what you need to consider, you probably also want to know what you can do to reduce the amount of time needed.
When Arizona homeowners think about how they can elevate their homes, painting and buying new furniture are some of the first things to come to mind. What many people forget is that the windows in our homes are not just necessary functional elements, they also play a massive role in the curb appeal and overall aesthetic of a home.
If you have fiberglass or wood windows that still work great but could use an aesthetic update, you can give them a refresh by repainting the window frames and sills. Pick a neutral color like white that goes with anything or paint them the same shade as your walls for the monochromatic look everyone has been raving about.
Have you taken the plunge and decided to undergo a window replacement? Congratulations! Not only can a window replacement elevate the aesthetic appeal of your home, but it can increase the value of your property and reduce energy costs.
If you can’t be present during the replacement process, you should make arrangements for a friend or neighbor to let the installers in. Don’t forget to disarm any security alarms that you might have in place and make arrangements for your pets to ensure that they are in a secure place away from the work area.
As Arizona window experts, new customers come to us with a wide range of questions. One of the most common questions we get asked is: how long does it take for new windows to be installed? While every window installation project is different, we are going to share the factors that affect installation time so you know what to expect.
How Long Will My Window Installation Take?
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