By Adalheid Voigt. Sofa. At Monday, March 04th 2019, 19:21:14 PM.
If your sofa is looking saggy there’s a good chance you can make it look better by stuffing the cushions. Now don’t just shove a bunch of cotton batting in there because it will result in a lumpy cushion. Instead, take off the cover (most sofas these days have removable covers) and wrap the cushion in a layer or two of quilt batting or foam wrap. If you find it shifts around a bit secure it using a spray adhesive. And if you find there are still a few saggy spots, now is the time to fill them with extra pieces of cotton batting. Easy peasy.
My mom was pretty positive there were no zippers to access the seat backs on her sofa, but after a little spelunking she was very surprised to find that, indeed, there were hidden zippers along the bottom back sides. If you can only get to the seat cushion, skip the Poly-fil and just pick up batting. For seat back access only: just Poly-fil.
Repeat this step with remaining seat cushions. Total cost for the Poly-fil and batting? Under $40. Not too shabby! For the seat cushions, I simply wrapped quilt batting around the entire seat and stuffed it back into the covers. Placing the fill behind the existing cushion will help to keep everything looking smooth. Pack the Poly-fil in like you're stuffing a turkey.