Can You Wash a Rug in the Washing Machine? Wool, Silk and Hand-Knotted Rugs

A stain or a bit of built-up dust and the temptation is strong: why not put the rug in the washing machine? For some light modern rugs the answer is yes. For a Persian, oriental or hand-knotted rug, the answer is almost always no, and sometimes the mistake cannot be put right. In this guide we look at which rugs can be machine washed, why wool and silk suffer, and what to do instead.

The short answer

It depends on the material and on how the rug was made. A small cotton or synthetic rug, with a label saying it is machine washable, can be washed. A wool, silk or hand-knotted rug should never go in the washing machine, not even on the gentlest programme.

Which rugs can be machine washed

The first check is to read the label sewn on the back, which says whether the rug is washable and at what temperature. In general, the following can be machine washed:

• bathroom and kitchen mats in cotton or synthetic fibres, designed to be washed often;
• small modern rugs marked “machine washable” on the label;
• light synthetic rugs, small enough to fit comfortably in the drum.

If the label is missing, or if you are not sure of the material, it is better not to risk it: a rug with no indications should be treated as a delicate rug.

Why wool, silk and hand-knotted rugs suffer in the washing machine

A hand-knotted Persian rug is not a simple fabric: it is a structure made of knots, weft and warp, often in wool or silk, with colours that may be naturally dyed. The washing machine puts each of these elements under strain.

• Wool fibres felt and shrink with continuous movement and heat, and the rug loses softness and shape.
• Silk is a delicate fibre, which marks and is easily damaged by water and rubbing.
• The weight of the water pulls at the base of the rug: a wet rug is heavy, and the spin cycle can deform it or tear joins and fringes.
• The colours can run, especially on antique rugs or those with natural dyes, staining the light areas.
• Drying at home is difficult: if moisture stays trapped in the base, mould and bad smells can appear.

If your rug is washable: how to do it

1. Check the label and respect the temperature indicated, usually 30 degrees at most.
2. Shake out and vacuum the rug before washing, to remove dry dust.
3. Choose a delicate cycle, with a reduced spin and a neutral detergent. Avoid bleach and fabric softener.
4. Do not overload the machine: the rug needs room to move.
5. Dry it laid flat and in the open air, in a ventilated room away from heat sources, turning it over from time to time.

What to do instead with a Persian or hand-knotted rug

For a valuable rug there are much safer alternatives to the washing machine:

• Vacuum regularly, in the direction of the pile, to remove dust before it settles deep down.
• Treat fresh stains in a targeted way, blotting with a white cloth and lukewarm water, without rubbing.
• Rely on a professional wash when a deep clean is needed: a specialist workshop assesses the rug, chooses the treatment according to fibres and colours and takes care of the drying.

You will find more practical advice in our guide on how to clean a Persian rug. If you would like an opinion on your rug, you can find out about our rug washing service in Milan or contact us.

Frequently asked questions

Can a wool rug be machine washed?

In general no. Wool felts and shrinks with water and movement, and a hand-knotted wool rug risks deforming or losing its colours. It is better to go to a professional.

What about a synthetic or cotton rug?

If the label allows it and the size is suitable, yes, on a delicate cycle at low temperature. Without a label it is best to avoid it.

Can I hand wash a Persian rug?

Small stains can be treated by hand in a localised way. A complete wash needs space, plenty of water, a good rinse and controlled drying, which are hard to guarantee at home.

What happens if I have already machine washed a rug?

It depends on the damage. If you notice faded colours, shrinking, a deformed base or damaged fringes, do not keep trying: have the rug assessed by a workshop, which can tell you whether a recovery job is possible.