Re-stuffing your worn-out couch cushions can give your sofa a whole new lease on life. If your couch is lumpy or flat and uncomfortable, you may want to consider this DIY project. To round out the effect, clean the cushion covers thoroughly and add a slip cover once you've restuffed them. A few colour-coordinated throw pillows on the couch will give your living room a completely different appearance.
Remove the cushions from the couch and locate the access zipper. If there is no zipper, use a seam ripper to remove the seam from the back side of the cushion. Always remove the seam from the back because you can't usually see it when the cushions are in place.
Take the existing stuffing out of the couch cushion. This is often acrylic, cotton or foam and can be thrown away or reused in smaller projects.
Refill the cushion with pieces of cotton or acrylic stuffing, which can be found in the fabric section of many craft stores. Position each piece of stuffing so the cushion is entirely filled, with no dips or holes. Check the positioning of the stuffing by pressing down on the outside of the cushion and adjust as needed. To use foam, see Step 4.
Measure the couch cushion and subtract 2 inches from each side. Cut pieces of foam to the dimensions of your cushions and slide them inside the cushion cover. Add enough squares of foam to fill the cushion to the appropriate height. The thickness of your cushions will determine how much foam you need.
Re-close the cushion cover by either zipping it or resewing the back seam. Keep the stitches tight enough to hold--but not tight enough to pucker--the material. Place the cushions back on the couch and enjoy.