Wool jumpers, cashmere cardigans and chunky knits are some of the trickiest items to dry. Hang them carelessly on a washing line and you can end up with sleeves dangling past your knees, misshapen shoulders and a sagging hem.
The good news is that line drying — done properly — is far gentler on knitwear than a tumble dryer, and a fraction of the cost to run. Here's how to dry jumpers outside in the British climate without ruining their shape.
Why Jumpers Stretch on the Line
Wet knitwear can hold several times its own weight in water, and gravity pulls those fibres downward the moment you hang the garment from the shoulders. The thicker the knit, the more dramatic the stretching becomes.
Pure wool, alpaca and cashmere suffer most, but cotton blends and acrylic can deform too. The fix is to remove as much water as possible before the garment goes on the line — and to avoid hanging knitwear by the shoulders at all. A long, taut 20-metre washing line gives you enough room to lay garments flat across multiple parallel strands.
Spin, Squeeze and Roll Before You Hang
Set your machine to the highest spin cycle that's safe for the fabric — usually 600 to 800 rpm for delicates and 1,000 rpm for cottons. Once the wash finishes, lay the jumper flat on a clean towel, roll the two together and press gently to draw out more water.
This one step can cut drying time by a third and dramatically reduces how much weight pulls on the fibres outside. Aim to hang washing by mid-morning so it catches the strongest UK drying conditions in the early afternoon. Pick a breezy, low-humidity day where you can.
Hang Knitwear Flat — Never by the Shoulders
Drape jumpers horizontally across two parallel washing lines rather than pegging them by the cuffs or shoulders. Fold the garment at the waist so it rests evenly on both strands, supporting its full weight. Multi-line steel washing line poles with three or four parallel lines are ideal for this technique.
Use a couple of soft stainless steel pegs at the side seams just to stop the jumper sliding in the wind — never peg at the shoulders. Avoid plastic pegs on dark wool, as they can leave faint indents. For very heavy knits, a clothes line prop lifts the line higher to give garments room to breathe.
Pick a Sheltered, Breezy Spot
Direct midday sun can fade dark wools and yellow whites, so a partly shaded but breezy position works best. Heavy-duty steel poles set into a steel ground socket stay rock-solid through gusty British weather, so you can leave knitwear out confidently on a windy day. A wall-mounted or pulley line beside a sheltering hedge also works well.
Bring jumpers in as soon as they feel dry to the touch — over-drying outside can stiffen wool fibres and dull the colour. If a sudden shower catches you out, a partly dried jumper can always be finished off indoors on a flat towel.
Storing Jumpers After Line Drying
Always fold knitwear rather than hanging it in the wardrobe — coat hangers cause the same shoulder distortion as a poorly set washing line. Tuck cedar blocks or lavender sachets between folded items to deter moths, and keep wool away from damp cupboards.
With careful drying and proper storage, a well-made jumper will keep its shape for decades. Once you've got the routine sorted, line drying becomes the most reliable — and cheapest — way to look after your favourite knits.
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