Over time, sofa springs stretch and come loose. Even with normal use, it's probable that your sofa springs will need to be repaired or reattached. It's important to fix the problem quickly, as loose springs can cause various problems. The spring's end can damage the cushions, and a sagging couch is unsightly and uncomfortable. Repairing a sofa's springs is a relatively easy process, and can save you quite a bit of money and frustration in the long run.
Turn the sofa to the most comfortable position for you to work with, either on its side or upside-down. Ask for help if your sofa is heavy, because moving it on your own could cause an injury.
Remove the fabric that covers the springs, which is usually a gauze-type material. Pull the fabric back carefully to avoid tearing it.
Identify the type of springs in the sofa. Sinuous springs are coil-shaped, and serpentine springs have a zigzag appearance. Also, check how the springs are attached to the sofa, and determine if the springs are loose or sagging.
Slip any loose springs back into place. For hand-tied springs, use a piece of twine to secure each spring in place. If the springs are attached by clips, identify whether the clips are loose, missing or broken. Tighten loose clips with a drill, and replace any missing or broken clips.
Flip sagging springs over. This will cause the spring to form an arch, instead of sagging down. Before you flip them, make sure that they are able to be used again. If the springs are damaged, it's best to replace them.
Replace the fabric covering over the springs, and secure it using an upholstery stapler. Ask someone to help you flip the sofa back to an upright position.
Lift the sofa with your legs to avoid back strain.