How To · Fashion · Repair
Repair Small Holes in Knitwear Before They Spread
A small hole in your favorite sweater doesn't mean it's done for. We'll walk you through three repair methods—from invisible mending to strategic patching—so you can extend the life of pieces you actually wear.
5 min read · IrisKnitwear is expensive, and holes feel like a betrayal. But here's the truth: most small holes—whether from a snag, a moth, or pilling gone wrong—can be repaired at home with basic supplies and ten minutes of focus. The key is acting fast. A hole the size of a pencil eraser is fixable. A hole the size of a quarter requires more finesse. A hole the size of a dime? You're still in the window.
We're not talking about invisible mending (that's a specialist skill). Instead, we're covering three practical methods that work for everyday sweaters: the ladder stitch for small snags, the needle-felting technique for moth holes, and the strategic patch for damage that's too large to hide. Pick the method that matches your hole.
A hole the size of a pencil eraser is fixable. A hole the size of a dime? You're still in the window.
What you'll need.
- 01Sharp needle (size 8 or 9 embroidery needle)
- 02Matching yarn or thread
- 03Scissors
- 04Felting needle (optional, for moth holes)
- 05Natural light or lamp
Step one · 1 minute
Assess the damage and gather yarn
Hold the sweater up to natural light and examine the hole. Is it a clean snag, a moth hole, or pilling damage? Next, find matching yarn—ideally from the garment's care tag or a yarn store with a swatch in hand. If the sweater is discontinued, a close match in weight and fiber content matters more than exact color; repairs fade into the fabric over time.
Keep a small yarn scrap from any hand-knit gifts or thrifted sweaters. You'll use it eventually.
Step two · 2 minutes
Thread a needle and secure the edges
Thread a sharp needle with a single strand of your matching yarn (about 18 inches). If the hole has loose strands, gently push them back into place with the needle tip—don't pull. For snags, you're trying to re-anchor the knit structure. For moth holes, you're stabilizing the perimeter so it doesn't fray further. Make small, tight stitches around the hole's edge, working from underneath the sweater when possible.
Use a needle small enough to fit through the knit without splitting the yarn. A size 8 or 9 embroidery needle works well.
Step three · 3 minutes
Close small snags with the ladder stitch
For holes smaller than a dime caused by snagging, use the ladder stitch. Bring your needle up through one side of the hole, then across to the opposite side, then back to the first side—creating a woven pattern that pulls the knit together. Work slowly and don't overtighten; the goal is to close the gap without puckering the fabric. After three or four passes, the hole should cinch shut. Knot off on the inside and trim excess yarn.
This works best on smooth yarns. Fuzzy or textured knits hide imperfections better, so don't stress about perfection.
Step four · 2 minutes
Use needle-felting for moth holes
Moth holes are different—they're usually small, clean, and surrounded by intact fabric. Gently pull the edges of the hole together and hold them in place. Using your needle, repeatedly poke the yarn fibers into the hole, working from the back of the sweater. This matts the fibers together and fills the gap. You're not stitching; you're felting. Work in small circles, building density gradually. The hole will gradually disappear as the fibers bond.
A felting needle (with barbs) works faster, but a regular needle works fine—it just takes more passes.
Step five · 1 minute
Secure and test the repair
Once the hole is closed or filled, make a final pass with your needle to anchor any loose fibers. Knot off securely on the inside of the sweater and trim the yarn tail. Gently tug the repaired area—it should feel stable and integrated with the surrounding fabric. If it feels loose, make a few more passes with the needle.
For repairs on the front of a sweater, consider the visibility. A repair on the side seam is more forgiving than one on the chest.
Step six · Ongoing
Prevent future holes with proper storage
Once you've repaired a hole, protect the sweater from future damage. Store knitwear flat or loosely folded—never on hangers, which stretch shoulders. Use cedar blocks or lavender sachets to deter moths. Wash gently in cool water with a wool-specific detergent, and dry flat. If pilling is the culprit, use a fabric shaver once or twice per season, not obsessively.
Pilling is a sign of friction, not poor quality. It happens to the best sweaters.
How to know it works.
A successful repair feels invisible to the touch and blends into the fabric. The hole should be closed or filled, with no loose threads or puckering. When you wear the sweater, you shouldn't feel the repair site, and from a distance, it should disappear entirely.
Questions at the mirror.
What if the hole is larger than a dime?
For holes larger than a dime, the ladder stitch won't work. Instead, consider a small patch (cut from matching fabric or a contrasting textile) sewn on the inside, or take it to a professional mender. Some holes are worth the investment.
Can I repair a hole in a delicate cashmere sweater?
Yes, but use a lighter hand. Cashmere is fragile, so work slowly and avoid pulling. A professional mender is worth the cost for heirloom pieces, but small repairs are doable at home.
What if I don't have matching yarn?
A close match in weight and fiber content is fine—repairs fade into the fabric. If you can't find anything close, a neutral tone (cream, gray, black) works better than a contrasting color.
Will the repair hold after washing?
Yes, as long as you've secured the knot well. Wash gently in cool water and dry flat. The repair will actually strengthen as the fibers settle.