Measuring your windows accurately is the first and most critical step to ensuring a flawless window covering installation. Whether you’re planning to install blinds, shades, shutters, or curtains, incorrect measurements can lead to poor fit, light leakage, and a less-than-polished look. At Early’s Shades & Shutters in Amissville, VA, we want to set you up for success. Use this step-by-step guide to measure your windows the right way—so your new window treatments fit perfectly and function beautifully.
Decide between inside or outside mount
Before taking any measurements, determine whether your window coverings will be mounted inside the window frame or outside of it. This choice affects both the measurements and the final appearance of the window treatment.
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Inside Mount offers a clean, built-in look and is ideal for windows with deep frames.
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Outside Mount is best when the window has shallow depth, obstructions (like cranks or handles), or if you want to make the window appear larger.
How to measure for inside mount window coverings
For an inside mount window covering installation, you'll need to take precise measurements of the inside of the window frame.
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Measure the width in three places: Top, middle, and bottom of the window opening.
- Record the narrowest width to ensure the treatment fits within the frame.
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Measure the height in three places: Left, center, and right.
- Record the tallest height to avoid gaps at the bottom.
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Measure the depth of the frame: This ensures the treatment will fit properly inside the frame without protruding.
Tip: Use a steel tape measure for accuracy, and write down all measurements in inches to the nearest 1/8".
How to measure for outside mount window coverings
If you’re going with an outside mount, your window coverings will sit outside the frame, typically on the wall or trim. This method can make windows appear larger and provides more complete light coverage.
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Measure the desired width: Add 2–3 inches on each side of the window to ensure adequate coverage and minimize light gaps.
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Measure the desired height: Start from the top of the area where the headrail will be mounted and extend beyond the window base by at least 2–3 inches, or all the way to the floor for full-length treatments.
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Note the mounting surface: Make sure the wall or trim can support the weight of the treatment, especially for heavier options like shutters or wood blinds.
Avoid common measurement mistakes
When it comes to window measurements, a small error can lead to big issues during window covering installation. Here are some mistakes to avoid:
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Guessing or estimating: Always use a tape measure and record exact measurements.
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Mixing width and height: Label your notes clearly to avoid confusion.
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Using rounded numbers: Stick to precise 1/8" increments for the best fit.
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Ignoring obstructions: Take note of handles, locks, or cranks that may interfere with the window covering.
When to call in the professionals
While DIY measuring is possible, many homeowners prefer to leave it to the pros for peace of mind. At Early’s Shades & Shutters, we offer professional measuring services to ensure every window covering installation goes smoothly. Our team will assess your windows, recommend the best mount type, and take exact measurements for a custom fit.
Trust Early’s Shades & Shutters for expert results
From stylish design consultations to precise window covering installation, Early’s Shades & Shutters in Amissville, VA is your local expert for all things window treatments. Whether you're covering one window or outfitting your entire home, we’re here to help you get it right from the start.
Schedule a free consultation today, and let our team help you transform your space with perfectly fitted blinds, shades, or shutters.
