Mount hardware before taking any measurements. The most accurate measurements are obtained when hardware is in place.
To obtain accurate measurements, always use a metal or wooden tape measure. Never use a flexible cloth tape, as they tend to stretch.
Enlist the help of a friend to hold one end of the tape measure in position when taking measurements. An additional set of hands helps speed the process along.
Use a stepladder to reach the top of the window.
Measure each window in the same room; windows that appear to be the same size frequently are not. Use a pencil and paper to record measurements and identify each window.
Double-check all measurements before ordering. Keep your written notes on hand as a reference.
Measuring Basics
Valance Length – 10” – 20” in length when used as top treatment. Can be used alone or layered over panels.
Sill Length – The finished length should be a ¼” above the sill or at the bottom of the molding below the sill.
Apron Length – Usually falls 4” below the sill. Mostly used in casual settings.
Café Length – Popular for use in kitchens. Usually covers ½ the length of the window.
Floor Length – Panels should fall about ½” above the floor.
Puddle Length – An additional 6” – 10” of length is added, which is gracefully arranged on the floor.