How To Measure A Basement Window

How to Measure a Basement Window

Measuring a basement window is an essential step before you order a replacement window. Here's a step-by-step guide on how to accurately measure a basement window:

Step 1: Determine the Window Type

Identify the type of window you have, such as a casement window, a double-hung window, or a slider window. This will help you determine the correct measurement method.

Step 2: Measure the Width

Measure the width of the window frame from the outside edge of the left jamb to the outside edge of the right jamb. Measure at the widest point of the frame.

Step 3: Measure the Height

Measure the height of the window frame from the top of the header (the horizontal trim at the top of the frame) to the bottom of the sill (the horizontal trim at the bottom of the frame). Measure at the highest and lowest points of the frame.

Step 4: Measure the Jamb Depth

Measure the jamb depth, which is the distance from the face of the frame to the inside of the window opening. Measure this depth at several points along the frame to ensure a consistent measurement.

Step 5: Measure the Flange Depth

If the window has a flange (a lip that extends around the frame), measure the flange depth, which is the distance from the face of the flange to the inside of the frame. Measure this depth at several points along the flange.

Step 6: Check Your Measurements

Once you have all the measurements, double-check them to ensure they are accurate. You may want to take multiple measurements and use an average to minimize errors.

Additional Tips:

Use a measuring tape that is at least 10 feet long.
Measure to the nearest 1/16 inch.
If you are replacing a window in a finished basement, measure the inside of the frame rather than the outside.
Consider hiring a professional if you are unsure about how to measure a basement window correctly.