Upholstery Cleaning Codes W, S, WS and X — and Why Your Israeli Sofa Probably Doesn't Have One

If you grew up buying furniture in the United States, you already know the drill: before anyone touches the sofa with a cleaning product, you flip up a cushion and look for the little tag with a letter on it. That letter tells you what may safely be used on the fabric. It is one of the genuinely useful pieces of consumer information the American furniture industry produces.

Then you move to Israel, buy a sofa here, go looking for that tag — and there isn't one. This article explains what the codes mean, and what to do in the very common case where your furniture has no code at all.

What the four codes mean

The codes come from a voluntary standard used by most American furniture manufacturers. There are four of them, and the distinction that matters most is between water and solvent.

W — water-based cleaner only. This is the most common code and the most forgiving. It means the fabric can be cleaned with water and a water-based solution, which is exactly what hot-water injection and extraction uses. Most fabric sofas fall here.

S — solvent only, no water. The fabric must be cleaned with a dry solvent. Putting water on an S-coded fabric is the classic way to create permanent water rings: the fabric's dyes or backing react to moisture, and what you are left with is a stain in the shape of the area someone tried to clean.

WS (sometimes written SW) — either water or solvent is safe. The most flexible code, and increasingly common on modern sofas because manufacturers prefer not to limit their buyers.

X — vacuum only. No liquid of any kind, water or solvent. This is rare, and it is usually reserved for delicate weaves that shrink, pucker or distort when they get wet. If you genuinely have an X-coded piece, professional wet cleaning is off the table and the honest answer is dry vacuuming and careful maintenance.

Where the tag actually is

People often conclude there is no tag when there is one, because they only check the obvious place. If your furniture was made for the American market, look in this order: under the seat cushions, on the cushion covers themselves if they unzip, on the deck — the platform the cushions sit on — and finally on the underside of the frame, which sometimes means tipping the piece back.

On sectionals, the tag is frequently on one module only, not on all of them. Check the largest section first.

The Israeli reality: usually there is no tag

Most upholstered furniture sold in Israel is either manufactured locally or imported from Europe, Turkey and the Far East. None of those supply chains use the American letter-code system. Locally made sofas — including pieces from well-known Israeli manufacturers — typically carry no cleaning guidance at all beyond, at best, a fabric composition label.

So if you have searched every seam and found nothing, there is nothing wrong with your sofa and you have not missed anything. You simply own a piece that was never labelled under that system. The furniture is not lower quality for it; the standard is just regional.

Where you may find a code in Israel is on imported American brands, and occasionally on pieces bought abroad and shipped over. It is worth checking, because when a code is present it is genuinely informative.

What a professional does when there is no code

The letter on the tag is a shortcut, not the only way to know. What it actually encodes is how the fabric's fibres and dyes respond to moisture — and that can be established directly, by testing.

Before any solution touches a visible surface, we run a colourfastness test on a hidden section: the back of a skirt, the underside of a cushion, an area behind the frame. A small amount of the intended solution goes on, gets worked briefly, and is then blotted with a white cloth. If colour transfers to the cloth, the dye is unstable and a water-based method is wrong for that piece. If nothing transfers, the fabric behaves like a W or WS and can be cleaned normally.

We also check how the fabric takes moisture. Some materials — certain velvets, some viscose blends, and the absorbent suede-like leathers — darken or stiffen the moment they get wet, and do not recover. Those get identified in the same test.

This test takes a couple of minutes and it happens during the free demonstration, before you have committed to anything. It is also the reason we are able to tell some customers, occasionally, that their piece should not be wet cleaned at all.

The mistake the codes exist to prevent

The reason any of this matters is that the failure mode is not "it did not get clean". The failure mode is permanent damage to a piece of furniture that was previously fine, just dirty.

The two ways we see this happen most often: someone rents a carpet-cleaning machine and runs it over a solvent-only fabric, and someone buys a supermarket upholstery spray and saturates a stain on a fabric whose dyes are not water-stable. In both cases the result is a ring or a bleached patch that no subsequent cleaning removes, because the damage is in the dye, not in the dirt.

If you are going to attempt something yourself and you cannot find a code, test it yourself first. Damp white cloth, hidden area, gentle pressure, look at the cloth. It is not as thorough as what a professional does, but it will catch the worst outcome.

The short version

W means water is fine. S means solvent only, and water will likely ruin it. WS means either works. X means vacuum and nothing else. Most furniture in Israel carries none of these, which is normal and not a problem — the fabric's behaviour can be established by direct testing instead, and any professional worth hiring will do that test in front of you before starting.

If you are not sure what you have, that is a perfectly good reason to ask for a demonstration rather than guessing. Sofa cleaning, couch cleaning, upholstery cleaning — whatever you call it, the first step is the same: find out what the fabric is before putting anything on it.