What Do W, S, WS and X Cleaning Codes Mean on a Couch?

Where to Find the Cleaning Code

Most upholstered furniture sold in North America carries a care tag with a cleaning code. Common places to look:

• Under the seat cushions, on the deck (the fabric platform the cushions sit on).
• On a sewn-in tag along the bottom or back of the frame.
• On a zippered cushion cover, near the zipper.
• In the original paperwork, warranty card or the manufacturer's website.

If the code leaves you unsure, our Ottawa upholstery cleaning visits always start with a look at the tag and fabric before choosing a method.

Older, second-hand or reupholstered pieces often have no tag at all, or a tag that no longer matches the fabric. In that case, treat the material as unknown.

What Each Code Means

W — Water-Based Cleaning

Water-based cleaners can be used. That does not mean the fabric can be soaked or scrubbed. Even W-coded upholstery can develop rings, browning or texture changes if too much moisture reaches the padding underneath, so light, controlled moisture is still the rule.

S — Solvent-Based Cleaning Only

The manufacturer recommends solvent (dry-cleaning type) products rather than water. Water can leave marks, shift dyes or change how the fabric looks and feels. Solvents also need care — ventilation and following product directions matter.

WS or SW — Water or Solvent

Either water-based or solvent-based cleaning may be suitable. It gives more flexibility, but it isn't a licence for heavy cleaning. The right choice still depends on the type of soil or stain.

X — No Water or Solvents

Vacuuming or light brushing only. X-coded fabrics are usually not candidates for spot cleaning at home. If an X-coded piece is stained, it's a good idea to get advice before trying anything.

Why the Code Is Only One Part of the Picture

A cleaning code is a manufacturer's general guidance. It can't account for everything that has happened to the furniture since it left the factory. Other things that affect what's safe include:

• Fibre type and blend — natural, synthetic and mixed fibres react differently to moisture, heat and friction.
• Dyes — some dyes are less stable and can bleed or fade.
• Backing and padding — moisture that reaches foam or backing can wick back up as a ring or brown mark.
• Construction — piping, tufting, glued seams and fixed cushions all change how moisture behaves.
• Previous treatments — protectors, earlier cleaning attempts or product residue can affect results.
• Age and wear — fabric that is thin, sun-faded or worn may be more fragile than when new.

Why a Hidden-Area Test Helps

Before using any product, test it on a hidden spot — the back, underside or a seam allowance. Apply a small amount, blot with a clean white cloth and let it dry fully. Look for colour on the cloth, rings, stiffness or a change in texture. A test can't predict everything, but it can catch some problems before they reach a visible area.

Risks of the Wrong Product or Too Much Moisture

• Water rings or tide lines as the fabric dries.
• Browning or yellowing wicking up from the padding.
• Colour bleeding or dye transfer.
• Shrinkage, puckering or a harsh, matted feel.
• Sticky residue that attracts soil faster afterwards.

Mixing household products is never a good idea — some combinations can damage fabric or produce harmful fumes. Our guide on whether you can clean a couch yourself covers these DIY risks in more detail.

When a Professional Inspection Is the Safer Choice

• The tag is missing, unreadable or says X.
• The piece is valuable, antique or has delicate fabric such as silk or some velvets.
• A stain is large, old, or has already been treated with something.
• You've tested and noticed colour transfer or texture change.

A professional can look at the fabric, construction and condition before choosing a method. If you'd like a second opinion, our upholstery cleaning service starts with a few photos so we can tell you what's realistic.

Frequently Asked Questions