How to Make a Window Seat Cushion

The window seat in need of a cushion was a long bench in the curved opening of a bay window. To get the best fit, we decided to make one, extra-long bay window seat cushion with angled sides to match the shape of the bench. We used Dura-Skrim^® Patterning Material to trace the shape of the bench to be sure we had the angles just right.

When sewing a long cushion like this it can be difficult to keep all the pieces properly aligned. To aid in this, we like to use match-up marks. These are small snips you make in the seam allowance on the fabric at the center of all of the panels and other key points around the fabric. Then when you’re sewing the panels together you can align the marks to know that everything is going back together just as planned. We carefully explain the process of creating and utilizing match-up marks in the video.

In the video you’ll also learn how to use Sailrite’s Fabric Calculator to determine the proper amount of fabric to order, how to sew your own bias piping, how to attach piping to fabric panels with tight angles, how to glue and cut foam, and much more.