Window treatments look better and hang better when the corners are mitered instead of simply folded in a square. The mitered corners provide a more professional and tailored look to the curtains. The side and bottom hems should be mitered. The top hem is finished with the heading trim or rod casing, so no mitering is necessary on these edges. Curtains that are not mitered at the bottom have a gap exposed that does not benefit the overall window treatment. It is easier to achieve a neat mitered corner when the side and bottom hems are equal.
Things You'll Need
- 45-degree angle tool
- Fabric pencil
- Sewing machine
- 2 metal washers
- Hand needle
Mark the side hem and bottom hem on each corner on the wrong side of the fabric.
Mark a 45-degree angle line across the corners where the hem lines intersect. Use your fabric pencil.
Lay the curtain fabric with the wrong side up. Fold corners of the fabric up so the wrong sides are touching. Press at the diagonal mark.
Fold the bottom half of the hem allowance. Fold again and press in place along the bottom of the curtain. Pin in place. Machine stitch. Stitch at a slow speed to prevent the hem from rolling or puckering. Leave the miter part open.
Insert a metal washer in each corner to weight the curtain. Tack the washer in place with a hand needle and thread to prevent it from sliding down the hem of the curtain. Use thread that is the same color as the curtain fabric. This will allow the tack to remain hidden from the casual observer in your home.
Fold the side seams half of your hem allowance. Fold again and press the side seams all the way along the length of the side. Pin in place and machine stitch. Stitch slowly to prevent the fabric from puckering.
Slip-stitch the miter closed with your hand needle and thread. Do not catch the front fabric when making the slip stitch, because this may cause your curtains to pucker. Clip the threads. Gently press the corners.
Tips & Warnings
- Consider leaving the miter open for a few days in case you need to place additional weights in your corners.
- Your curtains may stretch or shrink when they are first hung. Adjusting the weights can help straighten the curtains once they have been in place for three days.
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