The right window coverings can make or break a room, and one of the most important factors to consider when choosing window coverings, regardless of the type, will be the size of your windows. In order to get an ideal fit for blinds, shutters, and curtain panels, it is imperative that correct measurements are taken prior to ordering. The following is a step by step guide to help you get the right measurements for your window:
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1. Always use a metal tape measure. Plastic or cloth measuring tapes will stretch and sag leading to inaccurate measurements.
2. Record measurements in Imperial units (inches) rather than metric, and round all measurements to the nearest 1/8″.
3. Measure the width first, then the length. Make sure to clearly document which is which on your notes.
4. Consider the type of window covering you will be using when taking the measurements and where it will be mounted. Most Venetian blinds, Roman shades, and roll-down blinds mount inside the window casing. In this case, be sure to take all measurements inside the window casing. First, measure the width at the top, middle, and bottom of the window. Write down the smallest of the 3 measurements as your width. Do the same with the length, measuring the left, middle, and right sides, but in this case write down the longest of the 3 measurements if you will be using Venetian blinds, Roman shades, or roll-down blinds, and the shortest measurement if you will be using verticals. Also, make sure to measure the depth of the casing (from the edge of the actual window frame to the outside edge of the casing trim).
5. For outside-mount window treatments, like curtain panels, most vertical blinds, and valances, you must also measure the outside measurements of the window casing as well. For this purpose, draw a rough sketch of the window, showing both the window itself, and the casing. Write the measurements on the sketch, indicating which measurements are inside and which are outside the casing.
6. Measure all windows in the room separately, even if they appear to be the same size and shape, as there will likely be minor variation in size between all your windows.
7. Double check all your measurements prior to ordering or altering your window coverings, just to make sure. Dad was right when he told you: “Always measure twice, cut once!”. Also, if you are ordering blinds from a retailer (either online or in-person), make sure to let them know that the measurements are “exact”, meaning that no deductions have been made for extra fit room. Most blind manufacturers will automatically deduct 1/8″ to 1/4″ from your measurements so the blinds will fit easily into the opening.
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If you have specific questions on window coverings or measurements, email us at: askIT@decorateitonline.com. If we feature your question on our blog we’ll send you a $10.00 gift certificate toward your next store purchase (of $50.00 or more)!









