How to sew a double-fold hem on a dress shirt
A crisp bottom edge can make a homemade shirt look professionally finished without complicated tailoring. A double-fold, or double-turned, hem encloses the cut edge with two neat turns, then leaves a clean line of stitching on the right side with little added bulk.
The method suits cotton poplin, lawn, linen and other stable shirting. It also gives a made-to-measure shirt a controlled edge, whether it is a formal office shirt, a warm-weather button-up or a custom piece with a contrast collar.
| Shirt fabric | Finished depth | Turn size | Useful setup |
|---|---|---|---|
| Fine cotton poplin or lawn | 6–8 mm | 3–4 mm | Sharp 80/12 needle; 2.0–2.5 mm straight stitch |
| Linen | 8–10 mm | 4–5 mm | Sharp 80/12 or 90/14 needle; 2.2–2.5 mm straight stitch |
| Viscose | 8 mm | 4 mm | Sharp 80/12 needle; 2.0–2.5 mm stitch and a pressing cloth |
| Stretch poplin | 6–8 mm | 3–4 mm | Ballpoint 80/12 needle; 2.5–2.8 mm stretch stitch |
Prepare the shirt and release the old hem
Turn the shirt inside out and button it so the front and back lie together. Test your stitch on a scrap before unpicking. Then use a seam ripper to release the original hem stitching, working in short sections and cutting the thread rather than stabbing into the fabric. Snip the thread every few centimetres to prevent a loose thread from tangling.
Preserve the existing fold as a reference, but check for uneven cutting or previous alterations. Trim only the surplus hem allowance so it matches the selected depth, without cutting into the shirt body. Press out the old crease, then mark the finished edge at the centre and sides to accommodate the curve and any side vent.
- Test the stitch on matching fabric before unpicking.
- Fit a new, sharp needle of the recommended size.
- Keep the original stitching as a guide until the new hem is measured.
- Use tailor’s chalk to mark several reference points.
Choose the right hem depth
A neat dress-shirt hem should look deliberate rather than disappear into the body. A finished depth of 6–10 mm suits most adult shirts. Each fold uses half that measurement, so a 10 mm finished hem has two 5 mm turns.
Choose according to the fabric rather than making every hem identical. Lightweight poplin benefits from a shallow finish, while linen can carry a slightly deeper edge. Creeping viscose needs careful pressing, whereas stretch poplin needs a ballpoint needle and a stitch with some give.
Press both folds into position
Measure the intended finished depth from the original cut edge. Make the first fold at half that measurement and press it firmly. Fold the allowance again to the full measurement, enclosing the raw edge completely, and press from the wrong side. Establishing the creases first is much easier than correcting uneven folds after stitching.
Use steam suited to the fibre: a cotton setting for poplin and linen, and a medium setting with a pressing cloth for viscose or polyester. Work in small sections around the curve, pinning perpendicular to the edge if needed. Allow the pressed area to cool before moving it. Avoid fusible tape on a traditional shirt unless you want a noticeably stiffer finish.
Stitch a clean enclosed edge
Test the needle, stitch length and tension on a scrap folded in the same way. A standard presser foot works for most dress shirts; use a walking foot if several layers bunch near a side seam. Keep the fold aligned with the machine’s stitching guide, but do not pull the shirt as it feeds.
With the shirt inside out and the hem allowance towards the wrong side, stitch on the right side along the inner folded edge, catching only the hem layers. Secure each end with a short reverse and trim the tails. If the shirt has a contrast collar or patchwork yoke, throat space and smooth fabric feeding become important; this guide to sewing machines for patchwork explains the features that suit layered seams.
Manage curved hems and side vents
A shirt’s lower edge often curves more at the sides than at the centre. Mark several reference points rather than forcing one straight line across the front. After pressing each section, compare the hem with the original edge and side seam, keeping the fold even without flattening the curve.
Leave a dress-shirt side vent open. If it is already enclosed, leave that finish untouched; if it has a raw edge, fold and secure the allowance carefully. Sew across the hem up to the opening without bridging it, then check that the shirt hangs freely and the vent edges remain flat.
Suit the shirt to Australian conditions
Many Australian shirts move between humid outdoor conditions and air-conditioned offices. Lightweight cotton poplin or linen is practical in Sydney and Brisbane, while Melbourne’s changeable temperatures often justify a slightly more substantial shirt that can still be worn over a T-shirt. The enclosed edge is especially useful for laundering these frequently worn garments.
Australian haberdasheries and online sewing suppliers commonly stock 80/12 and 90/14 needles, polyester all-purpose thread, hem gauges and replacement presser feet. Independent fabric stores in Melbourne, Sydney and Brisbane are useful for checking interfacing and stabilisers by hand, and most products are priced in Australian dollars.
If a shirt is made for sale, check the Australian Consumer Law and current textile-labelling requirements for care information, fibre content and country-of-origin claims. Care instructions must be clear and must not mislead buyers. An Australian Made mark or a “Made in Australia” claim must meet the applicable origin criteria rather than simply acting as decoration.
Finish, inspect and troubleshoot
Hang the shirt after stitching and let it settle, then press the hem from the wrong side and lightly on the right. Check that the stitching catches every part of the fold, that no raw edge peeks out and that the vent remains open. For a handmade present, a folded shirt can be paired with sewing notions or small extras; these gift basket ideas provide coordinated packaging options for a birthday or Father’s Day gift.
Use the following checks when the result is not quite right:
- Puckering: shorten the stitch slightly, check the tension and press the allowance flat.
- Skipped stitches: fit a new needle, using a ballpoint for stretch fabric.
- A wavy edge: release the stitching, remeasure the curve and press again without stretching.
- Stitches on the wrong side: use the edge guide so the needle catches only the folded hem.
A correctly pressed double-fold hem should look crisp from either side and leave no loose threads along the inside of the shirt.