Couch Cushion Repair: Fix Saggy Seats and Save Your Sofa

When your couch cushion repair, the process of restoring worn-out sofa cushions to their original shape and support. Also known as cushion restoration, it’s not just about looks—it’s about comfort, longevity, and saving money on a full replacement. Most people replace their entire sofa when the cushions flatten, but that’s rarely needed. A good couch frame lasts 10–15 years. The cushions? They wear out in 3–5. Fixing them is cheaper, easier, and better for the planet.

Behind every saggy cushion is a simple problem: foam cushion refill, the material inside cushions that loses resilience over time. Also known as polyurethane foam, it breaks down from body weight, sunlight, and moisture. The fix isn’t magic. You don’t need to be a carpenter. You just need to know what’s inside your cushion and how to replace or re-wrap it. Most cushions have a removable cover. Take it off. Pull out the old foam. Buy new high-density foam from a fabric store—3.5 lb density or higher—and cut it to match. If the cushion has a fiber wrap (like polyester batting), you can add a fresh layer over the new foam for extra softness without losing support.

Some cushions use down or feather blends. These need fluffing, not replacing. Shake them out, poke them back into shape, and consider adding a foam core underneath to stop them from flattening again. You can also buy sofa cushion replacement, pre-made inserts designed to fit common sofa sizes. Also known as cushion inserts, they’re sold by inch measurements and often come with zippered covers. These work great if you don’t want to DIY. Just measure your old cushion, order the right size, and slip it in.

Stitching matters too. If the fabric around the cushion is torn or stretched, that’s part of the problem. A loose seam lets foam shift and clump. A simple running stitch with heavy-duty thread can hold everything in place for years. Use a needle designed for upholstery. Don’t skip this step—it’s what keeps your repair from falling apart again.

And don’t forget the base. If the cushion sits on springs or webbing, check those too. Saggy springs? You can replace them with zigzag webbing strips. They’re cheap, easy to install with a staple gun, and bring back the bounce. A lot of people think their sofa is dead because the cushions are flat. But often, it’s just the support underneath failing. Fix that, and your couch feels brand new.

There’s no need to spend hundreds on a new sofa just because your cushions lost their shape. With basic tools—a utility knife, measuring tape, needle and thread, and maybe a staple gun—you can do this yourself in an afternoon. Most repairs cost under $50. That’s less than a new throw pillow.

Below, you’ll find real guides that show you exactly how to handle different cushion types, where to buy the right foam, how to measure without guessing, and even how to revive feather-filled cushions without replacing them. These aren’t theory posts. These are step-by-step fixes people have used to bring their couches back from the edge.