Fabric guide
What a finish does to a fabric, what it costs in other properties, and why the finish on a swatch can be gone after a hundred washes.
AI renderIn short
A finish is a treatment applied to fabric after it is made. Mechanical finishes (brushing, calendering, compressive pre-shrinking) change the surface or the dimensions. Chemical finishes (easy-care, stain-release, water-repellent, mercerising) change how the fabric behaves. Every finish is a trade-off, and many wear off with laundering, so the right test is on the fabric after the washing it will actually receive.
7 min read
Written by the AHM International product development team
Updated October 2026. Every worked figure is checked by automated tests.
What a finish is
Greige, or grey, cloth is the fabric as it comes off the loom or knitting machine. Before it becomes a garment it is washed, dyed and finished. A finish is any treatment given to change the fabric's appearance, hand, dimensional stability or performance, from a soft brushing to a chemical coating.
The same cloth with two different finishes can behave like two different fabrics. That makes the finish a specification item, and the reason two quotations for a "260 gsm twill" can describe very different cloth.
Common finishes
What each is for, and the trade-off a buyer should know. None of these is a guarantee of performance without a test.
| Finish | What it does | Trade-off | Ask |
|---|---|---|---|
| Compressive pre-shrinking | Reduces shrinkage by mechanically relaxing the fabric before cutting | Controls rather than removes shrinkage | Residual shrinkage after laundering, tested |
| Mercerising (cotton) | Treats cotton with alkali under tension to raise lustre, dye uptake and strength | Added cost and a process step | Whether the cotton is mercerised, and the shade effect |
| Brushing, raising, peaching | Lifts fibre ends for a soft, warm surface | Can pill, and the surface wears with washing | Pilling grade after washing |
| Easy-care or wrinkle-resistant | Resin treatment that reduces creasing | Can reduce tear strength and abrasion resistance; some resin systems release formaldehyde | Strength after finishing; formaldehyde limits for the destination market |
| Stain-release (soil-release) | Helps oily soils wash out of polyester and poly-cotton | Can wear off in repeated laundering and affect moisture handling | Release grade before and after the stated number of washes |
| Durable water repellent (DWR) | Makes water bead and roll off the surface | Repels water, it does not make a fabric waterproof; performance fades with wear and washing | Spray rating after laundering; which chemistry, because rules on some fluorinated finishes are tightening in several markets |
| Antimicrobial | Aims to limit bacterial growth in the fabric | Claims are regulated in many markets, and effects vary | Which agent, which test, and whether the claim is permitted where you sell |
| Flame-retardant | Reduces or stops flame spread | A regulated protective property that needs certified fabric and garment testing | Do not accept a description: ask for the certificate and standard |
Reading a finish honestly
- Finishes are not permanent unless tested to be
- A finish that works on a new swatch may not after fifty industrial washes. State the number of washes and the wash conditions the property must survive.
- One gain, one cost
- Easy-care can cost strength, brushing can cost pilling resistance, repellency can cost breathability. Ask what was traded for the benefit.
- Regulation moves
- Limits on specific chemicals, and on what a product may claim, differ by market and change. Check the destination's rules, and keep the supplier's declaration.
- Protective claims need proof
- Flame, chemical and high-visibility performance are certified properties. A finish described in a catalogue is not a certificate.
Test the finish where it matters
Specify the finish, the wash regime and the number of washes, then test the property before and after. A stain-release finish is judged on the garment after its hundredth wash, not on the swatch in the sample room.
Related questions
No. A durable water-repellent finish makes water bead on the surface. A waterproof fabric has a membrane or coating that blocks water through the cloth, and is tested differently.
It can reduce tear and abrasion strength, because the resin that reduces creasing also stiffens the fibres. Ask for strength results after finishing.
It depends on the finish and the laundering. Many fade with repeated hot washing, so ask for release performance after the number of washes your program expects.
The fabric has been mechanically relaxed to reduce shrinkage in use. It lowers shrinkage rather than eliminating it, and the residual figure should be tested.
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