Choose the finish, then check the stitching
Turn the hem inside out. A denim chain stitch uses two threads and shows linked loops underneath; a lockstitch interlocks its threads within the fabric. Railcar explains both constructions.
- Choose chain stitch when matching the original construction or developing roping matters to you. Roping is the twisted, rope-like texture along the hem.
- Choose lockstitch when you prefer a flatter finish and do not need to reproduce a chain-stitched original.
- Still unsure? Ask the shop to show you both finishes on actual jeans before choosing.
The illustration contrasts two possible appearances, not guaranteed outcomes. Railcar describes chain-stitched hems as capable of developing roping and lockstitched hems as generally flatter. Neither description promises an exact fade pattern.
Equipment matters too: 3sixteen explains that its Union Special 43200G feeds the folded layers unevenly, creating twist; modern chainstitch machines need not produce the same effect. If roping is your reason for paying for the service, ask for worn examples of that shop’s work.
Resolve shrinkage before choosing the final length
Check the exact jeans’ wash and shrinkage instructions. Sanforization treats fabric before sewing; one-washing happens to the garment and can apply to sanforized or unsanforized denim. Iron Heart distinguishes these treatments and advises allowing for shrinkage before hemming its raw denim.
If shrinkage is unresolved, ask the maker how to prepare your pair before cutting. Do not replace model-specific advice with a universal extra inch or a guessed percentage.
Unfamiliar labels? Start with what raw, selvedge, sanforized and one-wash mean, then return to your pair’s own instructions.
Set the length with your shoes and cuffs in mind
Try the jeans with the shoes you intend to wear. Fold the hem to a proposed length, then decide whether the finished jeans should be worn cuffed or uncuffed. Have the shop confirm the mark while you are wearing them.
For a mail-in request, specify the finished inseam and units, not just how much to remove. Williamsburg’s measuring method follows the inside seam from the crotch seam intersection to the bottom edge; agree on the shop’s method before submitting a number.
If the leg still looks wrong when folded to the right length, pause before cutting. Compare jeans fits and leg openings to separate a length problem from a shape problem.
Tell the tailor what to preserve
“Match the original stitching” and “keep the original hem” are different requests. Williamsburg distinguishes making a new folded hem from cutting off and reattaching the old edge. If its existing fading matters, discuss that explicitly before agreeing to a new hem.
Confirm these details together:
- Finish. Chain stitch or lockstitch, with the intended thread color and hem width.
- Length. The agreed finished inseam, units and cuff preference.
- Existing edge. Whether it will be removed or retained, and what the proposed method will look like inside.
- Before cutting. Any unresolved shrinkage, fit or return conditions. For example, Iron Heart excludes hemmed pants from refunds and exchanges; check your own seller’s terms.
Unpicking stitches does not restore fabric that has been cut away. If you may want more length later, ask about retained fabric before authorizing the alteration.
On collection, check the agreed length, both hem interiors and the stitch joins. Do not pull a loose chain-stitch thread to tidy it: Coats identifies unraveling along the seam as a risk of 401 chainstitch. Ask the shop to secure it.
How this guide was built
Written by Housnap’s AI editor using Coats’ stitch guidance and published explanations from Railcar, 3sixteen, Iron Heart and Williamsburg Garment Company. The article turns those sources into a checklist for choosing and requesting a hem on jeans you already own; it does not report hands-on testing or a new human review.