If you have ever looked closely at the tag on a sofa or chair, you may have noticed a small letter code that seems easy to ignore. Those upholstery cleaning codes are more important than most homeowners realize. They are there to protect your furniture and guide proper cleaning methods. Using the wrong approach can lead to shrinking, discoloration, watermarks, or permanent fabric damage.
Upholstery cleaning codes are set by the furniture manufacturer and are usually found under seat cushions or along the frame. Each code explains what type of cleaning is safe for that fabric. The most common codes are W, S, WS (or SW), and X.
A “W” code means the fabric can be cleaned with water-based solutions. This includes mild detergents or professional upholstery shampoos. While this sounds simple, it does not mean soaking the fabric is safe. Too much moisture can still seep into cushions or backing materials and cause odor, browning, or mold. Controlled application and proper drying are critical.
An “S” code indicates the fabric should only be cleaned with solvent-based products. Water can leave rings, cause dye bleeding, or change the texture of the fabric. Many natural fibers and delicate weaves fall into this category. Solvent cleaning requires the right products and training, which is why professional service is strongly recommended.
A “WS” or “SW” code allows for either water-based or solvent-based cleaning methods. This offers more flexibility, but it does not eliminate the need for caution. Spot testing is still essential, and aggressive scrubbing or overwetting can still damage the fabric.
An “X” code is the most restrictive. These fabrics should not be cleaned with water or solvents. The only recommended care is vacuuming or light brushing. Attempting to spot clean an X-coded fabric often results in visible damage that cannot be reversed.
Understanding these codes helps homeowners avoid common mistakes, but reading the label is only the first step. Fabric age, wear, previous cleaning attempts, and hidden construction materials all affect how upholstery responds to cleaning. What works on one chair may cause problems on another that looks nearly identical.
A professional cleaning company is trained to interpret these codes, properly test fabrics, and select methods that clean safely without unnecessary risks.
Cleaning certain items, like upholstered furniture, can be tricky. Do the right thing and call your favorite cleaning company when you need help. After all, it pays to call a pro!
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