How to Wash a Wool Jumper
Knowing how to wash a wool jumper properly can mean the difference between years of wear and a shrunken favourite consigned to the back of the drawer. Wool jumpers, particularly lambswool jumpers, are prized for their natural warmth, breathability, and comfort, but they need careful handling to maintain their shape and feel.
At John Norris, we know that high-quality knitwear deserves the same care as your technical outdoor kit. With the right approach, you can keep your wool jumpers fresh, soft, and ready for every outing, from countryside walks to evenings by the fire.
Why Wool Needs Special Care
Wool fibres are naturally elastic and coated with lanolin, a protective oil that helps repel dirt and odour. However, they’re also sensitive to heat and agitation. When exposed to both, the fibres can tighten and felt together, causing shrinkage.
That’s why understanding how to wash wool jumpers by hand or on a delicate machine cycle is key. It keeps the fibres supple, prevents distortion, and preserves that soft finish that makes lambswool so comfortable to wear.
How to Wash a Wool Jumper by Hand
Hand washing remains the safest method for any pure wool, wool blend, or lambswool jumper. It gives you full control and avoids the harsh movements of a washing machine. Here’s how to do it correctly:
Fill a clean basin with lukewarm water.
Aim for around 30°C. Anything hotter risks shrinking the wool.
Add a gentle wool detergent.
A specialist product like Grangers Active Wash helps clean without stripping the natural oils. Regular detergents are too harsh and can damage the fibres.
Turn the jumper inside out.
This reduces friction on the outer surface and protects any pattern or detailing.
Submerge and lightly agitate.
Swish it through the water gently; never rub or twist, as this can stretch or felt the wool.
Rinse in cool water.
Replace the water and rinse until the detergent is fully gone.
Remove excess water carefully.
Press the jumper between your hands to squeeze out moisture but don’t wring it.
Lay flat to dry.
Place it on a towel, roll to absorb water, then reshape and leave flat on a dry surface away from direct sunlight or heat.
This method keeps the shape intact and ensures your wool jumper dries evenly and remains soft to the touch.
How to Wash Wool Jumpers in a Machine
If you prefer machine washing, use the wool or delicate setting with a cool temperature and low spin. Always check the care label first.
Place the jumper in a mesh laundry bag to prevent friction, add a wool detergent, and avoid fabric softeners. Once the cycle finishes, follow the same flat-drying method outlined above. Never tumble-dry a wool jumper, the heat can permanently shrink the fibres.
Some modern lambswool jumpers are pre-treated to handle gentle machine cycles, but it’s still best to err on the side of caution.
How to Dry a Wool Jumper
Drying wool properly is as important as washing it correctly. After rinsing, gently press out water without twisting, then lay the jumper flat on a clean towel. Reshape it to its original dimensions, paying attention to sleeves and hems.
Rotate occasionally as it dries to prevent damp patches. Avoid hanging wool jumpers, as the weight of the water can cause stretching, particularly at the shoulders. The ideal drying spot is a warm, well-ventilated room away from radiators and sunlight. Patience here pays off as your jumper will dry evenly and retain its fit.
How to Unshrink a Wool Jumper
If your wool jumper has accidentally shrunk, don’t panic. You can often relax the fibres and recover some of the original size.
- Fill a basin with lukewarm water and add a capful of gentle hair conditioner or baby shampoo.
- Soak for 10–15 minutes to soften the fibres.
- Gently squeeze out excess water without wringing.
- Lay flat on a towel and reshape while damp, stretching carefully to the desired fit.
- Leave to dry naturally, adjusting every few hours.
This technique works particularly well for merino wool jumpers, which respond to rehydration better than coarser fibres.
Maintaining Wool Jumpers for Years to Come
Once you’ve mastered how to wash a wool jumper, keeping it in good condition comes down to a few simple habits:
- Avoid over-washing. Wool doesn’t need frequent cleaning. A gentle hand wash every few wears is enough.
- Store flat and folded. Hanging can cause stretching. Keep them in breathable cotton bags instead of plastic.
- Protect from moths. Add natural deterrents like cedar blocks or lavender sachets.
- Remove bobbles. Use a wool comb or lint shaver to tidy the surface.
These small steps will help your lambswool jumpers stay fresh and well-shaped season after season.
Top Picks for Wool Jumpers at John Norris
Our collection of men’s wool jumpers and ladies’ wool jumpers includes a range of fine knits, half-zips, and classic crews designed for comfort and countryside life. A few customer favourites include:
Schoffel Lewis Lambswool 1/4 Zip Jumper
A lambswool-blend pullover for every season. This smart and durable knitwear piece offers the perfect balance of comfort, practicality, and traditional countryside appeal.
Barbour Horseford Crew Neck Sweater
Crafted from 100% lambswool, this crew neck jumper is ultra-warm, quick-drying, and breathable, ideal for active days outdoors or relaxed weekends.
Jack Pyke Ashcombe Crew Neck Sweater
A medium-weight sweater made from 100% lambswool with contrast detailing around the neck and cuffs. Designed to keep the cold out when temperatures drop, it’s a classic choice for the colder months.
Schoffel Ladies Evie Fairisle Sweater
Made from a luxurious alpaca-mix fabric, this super soft funnel neck jumper features a bespoke Fairisle design that brings together timeless heritage and modern comfort.
Each piece reflects the craftsmanship, warmth, and durability that define John Norris knitwear; built to last, season after season.
Taking the time to learn how to wash a wool jumper properly makes a lasting difference to how it looks and feels. With cool water, the right detergent, and a gentle hand, you can keep your lambswool jumpers soft, fresh, and perfectly shaped for years. A little care goes a long way, turning quality knitwear into a long-term investment rather than a one-season piece.
At John Norris, we’ve been helping customers care for their countryside clothing for generations. Explore our range of wool jumpers and discover our full collection of country attire to find everything you need for life in the country. Knowing how to wash a wool jumper is just the beginning, with the right care, your knitwear will reward you with lasting comfort, warmth, and timeless country style.
