How to Care for Wool Upholstery

Wool is the most forgiving upholstery material in normal use and the least forgiving the moment you put it in hot water. Understanding why makes the whole care routine obvious instead of a list of rules to memorise.

Why wool behaves the way it does

A wool fibre is naturally crimped, like a very fine spring. That is where the resilience comes from: compress it under somebody sitting down for three hours and it pushes back into shape afterwards. It is the reason a wool seat does not develop a permanent dent in the first year the way some flat synthetics do.

The fibre surface is covered in microscopic overlapping scales. In daily life those scales shed dust and resist light soiling. In a hot wash with the drum turning, those same scales lock into each other and will not come apart. The fabric thickens, stiffens and shrinks. That is felting, and it is permanent.

So the entire care strategy is: use it hard, keep it cool, do not agitate it when it is wet.

The weekly job

• Vacuum with an upholstery head, including the seams and under the cushions. This removes the grit that cuts fibres when people sit down.
• Swap and rotate loose cushions so one end of the sofa does not take every evening.
• Shake and pat cushions back into shape rather than leaving them compressed.

If you do nothing else, do the vacuuming. Most upholstery does not wear out from use, it wears out from the abrasive dust that gets ground into it.

Spills

Speed beats technique.

• Lift any solids off first with a blunt knife or a spoon, working inwards so you do not spread it.
• Blot with a dry white cloth. Press, lift, move to a clean part of the cloth, press again.
• If it needs more, use a cloth barely damp with cool water. Work from the outside of the mark inwards so you do not push a ring outwards.
• Let it dry away from direct heat. No hairdryer, no radiator.

What not to do: scrub, soak, or reach for a stain spray. Rubbing wet wool is the fastest way to felt it, and most household stain removers are alkaline, which wool does not like.

Washing covers

A cover that unzips is a real advantage, and it is also the easiest thing to ruin in ten minutes. Before anything goes in a machine, find the care label and do exactly what it says.

If washing is allowed, the principles are always the same: cool water, a wool programme or a gentle cycle, a detergent made for wool rather than a biological powder, and the lowest spin the machine offers. Never tumble dry.

Drying matters as much as washing. Wet wool is heavy and stretches under its own weight, so hanging a wet cover over a line can leave it longer than it started. Dry it flat, out of direct sun, and put it back on while it is very slightly damp so it takes the shape of the cushion as it dries.

One more honest point: wash all the covers on a piece together, not one at a time. Even a careful wash can shift a colour very slightly, and one freshly washed cushion next to three older ones is more obvious than four that have all had the same life.

Sun, heat and the long term

Dyes fade in direct sunlight. Wool is no worse than most fabrics here and better than some, but a sofa parked in a south-facing window will show a line where the light stops. Rotating cushions and seat positions spreads that out so it reads as age rather than damage.

Heat is the other one. Keep upholstery away from the direct blast of a radiator or a heat pump. It dries the fibres and makes them more brittle than they need to be.

Reality check

• Pilling early on is normal. Pilling that keeps going for years is friction from something, usually a rough cushion or clothing.
• Wool hides light soiling well, which means it is easy to leave it too long. Vacuum anyway.
• Every serious mistake with wool involves heat, water and movement at the same time.
• A cover you can take off is worth more than a fabric you were promised is stainproof.