A stylish set of patio cushions can make your patio become your haven from the rest of the world or a place for entertaining guests in comfort. When a patio cushion becomes damaged, your patio can become an eyesore and you’ll want to replace the cushion as soon as possible. To make a replacement patio cushion, find the right replacement fabric and purchase enough to do the job.
Measure the existing cushion's length and width and make a note of it. Measure the height of the cushion and divide it in half, then add one. Add the number you reached with your height measurement to both the length and width measurements of your cushion.
Select a fabric you want to use to replace the cushion and cut the fabric to the final size determined in Step 1. Place the fabric with the right side down. Fold over the edge along one of the shortest sides on each piece of the fabric by a ¼ inch. Iron to press a crease into both fabric pieces to create a hem.
Pair up the two pieces of fabric with the right sides facing in and the pressed hems running side by side. Pin the fabric pieces together along the edges, leaving the pressed hems unpinned. Sew a ¼ inch seam all the way down each of the three pinned sides. Turn the fabric right side out.
Strip the old cover off of your patio cushion, if possible, to salvage the foam from inside, or purchase new seating foam the same size as you measured in Step 1. Slip the foam into the sewn cover through the open end and all the way into the cover.
Bring the pressed edges together to close the cushion and pin the edges together. Machine sew or hand stitch the opening closed from end to end to secure the cushion.