Garment-Washing Bouclé Coats: What to Test Before Bulk

A garment wash on finished bouclé coats is a wet process applied after the cloth has already been finished, and the risk is not ordinary shrinkage but felting: irreversible matting of wool fibres under water, heat and mechanical action. Three facts decide whether the process is safe in 2026: 1. what the cloth did in its first finishing route, 2. what the laundry will actually do, 3. what the buyer will accept. Test on bulk cloth, not on a hand-woven sample, and test with the factory’s real wash recipe rather than a laboratory default, then measure the change as a percentage of the original reading so pieces can be compared. For example, a 3 percent length loss on a 1.2 m coat panel is 36 mm, which moves the hem line. Ask the mill for its finishing route at the same time, because carbonising, crabbing, milling and decating each change how the cloth responds to a second wet process.

What Is the Difference Between Relaxation and Felting Shrinkage?

Relaxation shrinkage is the recovery of tensions built into the cloth during spinning, weaving and finishing, and it stops once those tensions are released. Felting shrinkage is the irreversible interlocking of wool fibres, and it does not stop while water, heat and mechanical action continue. The distinction decides what a test can prove. A cloth that loses 2 percent in the first wash and then stabilises has shown relaxation, which a care label can absorb. A cloth that loses 3 percent in the first wash and another 3 percent in the second has shown felting, which no care label can absorb, so measure after 1 time, 2 times and 3 times rather than once. For example, a coat panel measured only after the final cycle cannot show which mechanism caused the change. According to Woolmark’s woollen finishing reference, finishing exists partly to release the tensions and internal stresses left by spinning and weaving, and woollen cloth carries more residual processing oil than worsted cloth, which changes how it wets out.

Which Cloth Do You Cut, and From Where?

Sample selection decides whether the test predicts bulk behaviour, and the sample must come from the same warp and weft lots as the delivery. Cut from the bulk roll, not from a sample card, and cut from at least three positions along the length, because cloth from the beginning and the end of a piece can differ in tension and in pick density. Avoid the first and last metre, where loom start and end marks concentrate. Mark each piece with its roll number and its position before it is cut, and keep the marking on the sample through the wash, because a test piece whose origin is unknown produces a number nobody can act on. A directional reading helps too: for example, a 3 percent length loss against a 1 percent width loss points to warp tension, while the reverse points to weft insertion. Photograph the cut pieces on the roll with the marking visible, so the record survives the wash.

How Many Pieces and From Which Positions?

A usable wash trial uses at least six pieces, and the count is set by the number of conditions rather than by statistical ambition. Three pieces go through the real wash recipe, one piece goes through the same recipe twice, one piece goes through it three times, and one piece stays unwashed as the control. Each washed piece should be at least 30 cm by 30 cm, because a smaller piece curls at the edges and measures inaccurately. Cut pairs from the same position so the washed piece and the control can be compared directly. Label every piece with roll number, position and wash cycle count. The control is the piece most often forgotten and the one that makes the report readable, because it shows what changed rather than what the cloth looks like after washing.

What Do You Do With the Unwashed Control?

A control piece is the unwashed reference that turns a set of readings into a comparison, and its value depends on being handled exactly like the washed pieces. Store the control flat, in the same room, and measure it on the same day as the washed pieces, because humidity moves wool dimensions by a measurable amount over a week. Photograph the control beside each washed piece under the same light and at the same distance, so the surface difference is visible rather than asserted. Measure the control twice, at the start and at the end of the trial, and record both readings; a control that changes on its own tells you the measurement method is unstable. Keep the control with the trial record rather than returning it to stock, since a control without its record proves nothing.

What Wash Protocol Reproduces the Factory’s Real Process?

A wash protocol is the written recipe the garment laundry actually uses, and a protocol copied from a care label is not the same document. Ask the laundry for six values: water temperature, cycle time, liquor ratio, detergent type and dose, softening agent if any, and drying method. Add the machine type, because a front-loading drum and a paddle machine apply different mechanical action to the same cloth. If the laundry uses a stone or enzyme wash, record the charge weight. Run the trial with those values rather than with a standard household cycle, because the point is to predict what will happen to your coats, not what happens in a domestic machine. According to the Consumer Rights Act 2015 in the United Kingdom, goods must be of satisfactory quality and fit for purpose, and a care label that promises washability becomes part of that promise.

Which Six Lines Belong in the Wash Record?

The record below is the minimum that makes a wash trial repeatable by a third party. Fill it before the pieces enter the machine, not after.

What Must the Mill Disclose About Finishing?

Finishing disclosure is a written statement of the wet and dry processes the cloth has already received, and it is the input that explains the wash result. Four processes matter for wool: carbonising, which removes vegetable matter in acid and leaves the fibre more sensitive; crabbing, which sets the cloth under tension in hot water; milling, which fulls the cloth and is the step that decides how much further it can felt; and decating, which sets the surface with steam. A mill should also state whether an anti-felting treatment was applied, and if so which family, because a chlorine or resin treatment changes the safe wash temperature. Ask for the route in writing with the process order. A mill that answers “normal finishing” has not answered, and the trial then carries the whole risk.

Which Measurements Decide Pass or Fail?

A pass line is a set of dimensional and surface limits agreed before the trial, and it converts a wash result into a decision. Measure length, width and diagonal on every piece before washing and after each cycle, using the same flat table and the same tension-free method. Record surface change with photographs under the same light, and rate felting on a simple scale agreed in advance. Then compare the washed pieces with the control rather than against a remembered ideal. The limit itself is a commercial choice, but it must be written in the order, because a limit invented after a failure is a negotiation rather than a specification. If the intended care label says machine washable, the trial must use the machine wash recipe, not a hand-wash recipe that flatters the cloth.

How Do You Read the Three Dimensions?

Reading a dimension means measuring the same three lines on the same piece every time, and the discipline is what makes a series of numbers comparable. Mark the measurement points on the piece with a permanent marker before the first wash, at least 20 cm apart, and measure between the marks rather than between the cut edges, which fray and curl. Record length in the warp direction, width in the weft direction, and one diagonal to catch skew. Take the readings on a flat table with the piece relaxed for ten minutes, and avoid stretching the cloth while the tape is applied. Then calculate change as a percentage of the original reading, not as a difference in centimetres, because a percentage allows comparison across pieces and across deliveries.

What Happens If the Bulk Has Already Felted?

A felted bulk is a commercial problem with three exits, and the choice depends on how far the change has gone. Exit one is to keep the cloth and change the product: a shorter garment, a smaller accessory or a different silhouette can absorb a dimensional loss that a long coat cannot. Exit two is to re-order, and the re-order must carry a revised finishing route, because repeating the same route repeats the result. Exit three is a claim, and a claim stands on the trial record: the sample identity, the recipe, the measurements and the agreed limit. Without that record the conversation becomes an argument about whether the laundry or the mill caused the change. Our care label guide covers the label side, and the shrinkage diagnosis note separates cloth faults from care faults. For construction context, see the tweed fabric guide.