4 min read

Guide

How to Wash and Block Chunky Wool Without Felting or Stretching

Short answer

Hand wash chunky wool knits in lukewarm water (30 °C max) with wool wash, let them soak for 10–15 minutes without rubbing, press the water out inside a towel without wringing, and dry them flat, shaped to size. That also blocks them. And wash them rarely: often airing is enough.

Before you wash

  • Air the knit. Wool largely cleans itself: laying it flat by an open window for a few hours removes odours.
  • Spot-clean stains straight away with a damp cloth and a little wool wash.
  • Check the yarn label. Our Peruvian Highland wool yarns, such as FACES, are hand wash only.

How to hand wash, step by step

  1. Fill a basin with lukewarm water, 30 °C at most. Rinse at the same temperature: a sudden temperature change combined with rubbing is what felts wool.
  2. Dissolve the wool wash in the water before you add the knit.
  3. Submerge the knit, press it gently so it soaks through, and leave it for 10–15 minutes. Don't rub or squeeze it.
  4. Rinse in water at the same temperature, unless you use a no-rinse wool wash.
  5. Lift it out with both hands, supporting all the weight. A soaked super bulky knit is heavy and stretches under its own weight.
  6. Remove the water by pressing it against the basin, then roll it in a dry towel and press or step on the roll. Never wring it.
  7. Dry flat on another dry towel, away from radiators and direct sun. Turn it over after a few hours.

How to block chunky knits

MethodHowBest for
Wet blockingWash or soak the piece, towel out the water and dry it flat to size, pinned if neededSweaters, blankets, curling edges
Spray blockingLay the dry piece out to size and mist it with water until damp; let it dryHats, cowls, quick touch-ups
Steam blockingHover a steam iron over the piece without touching it, then let it cool flatEvening out stitches and cables

Don't block ribbing by stretching it: it loses its elasticity. On textured stitches such as cables or seed stitch, never press down with the iron.

What's different about super bulky wool

  • It holds a lot of water. Use two or three towels to press it out.
  • It takes time to dry: allow 24–48 hours for a sweater or a blanket.
  • Never hang it wet. It stretches and loses its shape. A blanket dries best on a flat drying rack or on a bed covered with towels.

For blankets, see also the best yarn for chunky blankets.

Mistakes that ruin wool

  • Hot water or sudden temperature changes.
  • Rubbing, wringing or a fast spin.
  • A tumble dryer or a radiator.
  • Hanging the knit wet or storing it on a hanger.

Pilling and storage

Pilling is normal on wool, especially where it rubs, such as under the arms. Remove pills with a sweater comb or a fabric shaver. Store knits folded, never on hangers, clean, and with cedar or lavender against moths.

What about raffia?

Paper raffia isn't washed: it's spot-cleaned with a damp cloth. We explain it in how to crochet with raffia.

FAQ

Can I machine wash chunky wool?
We recommend hand washing. The drum's movement can felt or stretch the wool, especially super bulky knits, which are very heavy when wet.

How often should I wash a wool sweater?
A few times a season. Between washes, airing is usually enough.

Does blocking change the size?
It relaxes and evens out the stitches. Wool stretches a little when wet, which is why you dry it flat to the measurements you want.

How long does it take to dry?
About 24–48 hours for a super bulky knit, depending on its thickness and how humid your home is.

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