How to Cover a Window Seat


Enjoying the view of a picture window is very delightful on a cozy weekend afternoon. A comfortable window seat is a nice spot to sit on and relax while reading a book or enjoying a warm cup of tea. If you have a bare window seat, consider making a cushion for it. Window seats are a comfortable niche for an avid reader and an excellent accent to any home's decor. Consider making a seat cushion for your window bench. Coordinate it with your space's existing decor. You will be pleased with the final results.

Things You'll Need

  • Fabric
  • 3-inch Foam
  • Scissors
  • Electric knife
  • Sewing Machine
  • Thread
  • Tape Measure
  • Marker
  • Hand needle
  • Trash bag

Cut Your Foam

  • Use high-density foam that is 2 to 3 inches thick. For a really comfortable and cozy seat, use foam that is 4 to 5 inches thick.

  • Measure the length and width of your window seat. If your seat has angled corners, first measure the full length and width, according to the measurements of the longest edges. Come back and mark for the angles. Mark the lines of your cuts.

  • Use your electric knife to cut right through the foam. It is very easy to cut foam this way.

  • Place the foam on your window seat to make sure it is fitting well. If not, cut away any excess.

Sew Your Cover

  • Lay your fabric on the floor, folded in half. Measure your foam--the length, width and height. Also, take the tape measure and wrap it around the center of your foam. Make note of the measurements.

  • Take the measurement of your foam. Add the width and the height, twice. For example, if your foam has a length of 72 inches, a width of 36 inches and a height of 4 inches, then add: 36 + 36 + 4 + 4 = 80 inches. Add 2 inches to allow for the seam allowance and foam handling.

  • Now, measure for your length cut. From the example, the length is 72 inches, and the height is 4 inches. Therefore, add: 72 + 2 + 2 = 76 inches. Add 2 inches to this measurement. You are only adding 2 inches at each end because the fabric will meet halfway to a seam.

  • Fold fabric lengthwise with right sides facing one another. Cut your fabric. From the example, you will cut a folded piece of fabric, 41 inches by 78 inches.

  • From the center of the long side of the fabric, opposite the fold, start sewing the edge. Leave an opening at this center. Leaving about a 14-inch opening, sew away from this opening to the corner. Turn the fabric 90 degrees. Continue to sew to the next corner. Do this to the folded edge. Repeat on the other side.

  • Your cover now has a hole in the center with the seam sewed at its both sides. Open the fabric of one corner to make a triangle perpendicular to the seam. Since the foam in the example measures 4 inches in thickness, mark a seam with straight pins that is 4 inches long. Stitch across. Repeat at each corner to square your cushion cover.

  • Cut away the excess fabric at each corner.

  • Turn your cover inside-out. Place your foam inside by folding it the long way, feeding one end in. Work it into the fabric. If it is very difficult to insert the foam in the fabric, cover the foam with a plastic trash bag. Slide it in. Pull out the bag when you are done inserting the foam into the cover.

  • Sew close the opening that the foam was inserted through, using your hand needle. Sew a slip stitch or other stitch to hold the cushion seam together. Make sure your fabric edge is folded in.

Tips & Warnings

  • Use durable fabrics--such as upholstery fabric--so that your cover will last a long time. Add extra throw pillows to further accent your window seat.
  • Be careful when handling a sewing machine and hand needles.

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  • Photo Credit Siltech, Eve Cushner
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