Making cushion covers with a zip at the back to close it is very simple and it definitely gives a neat, professional look to your cushion cover. Very often I just use an envelope closing for the back of my cushion covers, but adding a zip honestly doesn’t take that much longer. You’ll notice that I have suggested an 18″ square of fabric which means that I haven’t added the usual seam allowance – this means that my cushion cover will finish at 17.1/2″. I always find that making the cover slightly smaller than the cushion pad gives a nice tight fit.
one 18″ square of fabric
two 18″ by 10″ rectangles
one 16″ zip in matching colour
one 18″ cushion pad
Making the cushion cover with zip
Place the two rectangles with right sides together. Mark a line 1″ from the edge along one of the 18″ edges. Pin and baste along this line. Machine stitch 1″ of this line at each end – these will be the sections above and below the zip.
Press the seam allowance open. Place the zip with right side down on the seam line. Check that you have the same amount of seam showing above and below the zip.
Check that the zip is centred on the seam line and baste each side in place. You can see my zipper foot in the left hand photo – it has that dip in it so that the needle can get closer to the zip when you sew. Yours will probably look similar to this. Turn the fabric over so that you are working on the right side and sew down one side of the zip, across the bottom and up the other side. Remove the basting stitches both down each side of the zip and along the middle of the seam line.
I should have begun by suggesting that you zigzag all the fabric edges to prevent fraying. It was simple enough to zigzag the outside edges of both this back panel and the 18″ square for the front of the cushion cover, but it was too late to zigzag the edges under the zip. You can get potions that do the equivalent – the one that I have is called Fray Stoppa and it is useful for those times when I have forgotten to zigzag the edges before I start. The back of the cushion cover is now complete.
Place the front and back of the cushion cover with right sides together. Pull down the zip so that it is open. This will create the gap to use for turning the cushion cover right side out. Sew around the outside of the square. I tend to use a 1/2″ seam here so that the zigzag stitches don’t show.
Turn the cushion cover right side out through the zip opening, pushing the corners out gently. Insert the cushion pad through the same opening and do the zip up. You can see that making a cushion cover with zip really doesn’t take very long.
Here’s the video: