A tear is not mended by pulling the edges together. It is mended by giving the damaged area something new to hold on to. Fabric that has torn has already failed at that point; stitched edge to edge, it tears again beside the stitching.
Identify the tear first. A seam that has come apart is not a tear at all — it is a failed seam, and it is simply resewn a little inside the old stitching line. Everything below concerns a tear in the fabric itself.
Support it from behind. Cut a patch of lightweight fusible interfacing or a scrap of similar fabric, at least 2 cm larger than the tear on every side, with rounded corners so it has no point to peel from. Fuse or pin it to the wrong side.
Close the tear on the surface. Align the edges so they just meet, and stitch across the line with a narrow zigzag, a three-step zigzag, or rows of straight stitching running back and forth across the tear.
Work well beyond the ends of the tear. Stopping exactly at the end leaves a stress point that simply extends the split.
On a right-angled tear, stitch each arm separately and reinforce the corner most heavily, because that corner is where the load concentrates.
Match the thread for an invisible repair, or contrast it deliberately as visible mending.
Press afterwards and expect the mended area to be stiffer. That is the interfacing doing its job.
Questions people actually ask
Can I use an iron-on mending patch alone?
It holds for a while and then lifts at the edges, especially after washing. Fuse it if you like, but stitch it as well.
What about a tear in knitwear?
Use a stretch stitch and a knit-compatible stabiliser, or the repair becomes a rigid patch in stretchy fabric and tears at its own edges.
Last reviewed 2026-08-11