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How to Measure for Replacement Windows

April 24, 2013 Categories: Home Renovation Tips Replacement Windows

Replacement Window Picture

In this post you will learn …

  • What else will need to be looked at when measuring for replacement windows.
  • Step by step instructions on how to measure your windows.

So, you’ve decided it’s time to get new replacement windows because you’re interested in lowering your energy bills. Regardless of your reason for replacing your home's windows, someone will need to measure your current window to give you an accurate quote and a correctly sized replacement window.

At Stanek® Windows, our experts come out to your home and measure your windows for free. This ensures our quote is accurate and the window you receive is a perfect fit. You can buy the best window in the world, but if it’s not sized correctly, its quality is not really going to matter. In addition to measuring your windows, our professional window installers will also consider the following:

  • The condition of the frame and whether or not the opening needs to be re-framed
  • Consistency of the window openings
  • Insulation needed
  • Type of glass preferred

As you can see, the size of your window is only one factor of many that determines the cost.

Measuring your windows yourself can still be beneficial if you’re simply looking for a general United Inch number. Follow the guide below to get started.

Measuring for Replacement Windows

  1. Measuring the height: Take at least two measurements of the height, then use the smallest number, reduced by 1/8”. Measure from the surface of the head to the high point of the window sill.
  2. Measuring the width: Take at least three measurements of the width, then use the smallest number, reduced by 1/8”. Measure between the surface of the jambs. (You may have to raise the window sash.)
  3. Measuring the depth: For this measurement, you’ll need the dimension of the rough window opening. Measure between the outside and inside stops. This measurement must be at least 3-1/4”.
  4. Include the quantity and room: In the example chart’s diagram below, you want 2 windows for the bedroom.
  5. Draw a rough diagram: This is always helpful to communicate how the windows open or if they’re fixed.

measure for windows

NOTE: Unless your old window has already been removed, it’s not a good idea to take it out to measure the opening. Keep in mind that your replacement windows may have to be custom made to a non-available or non-standard size. That could leave you without a window for quite a while if you did in fact take it out to measure.

Get It Right the First Time!

Most window companies will not allow you to return a custom-made window. That is why we strongly recommend you have a Stanek® Window installation professional come out to your home and measure your windows for you. That way, should something go awry with the installation’s measurements, the solution and any extra costs will be our responsibility, not yours.

Schedule your free, no-obligation design consultation with a Stanek® Windows professional today!