Should I button shirts before washing?

When It Makes Sense

• Good fit: When the shirt is made of sturdy fabrics like cotton or polyester and has sturdy buttons that are unlikely to warp, buttoning can help keep the garment’s shape during the wash.
• Good fit: When you plan to use a gentle cycle and a mesh laundry bag, buttoning can prevent the buttons from catching on other items and reduce the chance of snags.

When You Should Avoid It

• Warning sign: If the shirts are delicate, have antique or loosely attached buttons, or are made of silk or linen, buttoning may cause stress on the seams and lead to damage.
• Warning sign: When using a high‑speed spin or a heavy‑duty wash setting, closed buttons can create pressure points that strain the thread and cause buttons to pop off.

Pros and Cons

Pros

• Helps the shirt retain its intended silhouette and reduces the risk of the fabric folding over the button area.
• Minimises the chance that buttons will snag on other garments or the washing machine’s agitator.

Cons

• Closed buttons can create tension on buttonholes, potentially causing them to stretch or tear, especially on thin fabrics.
• Buttoning may trap water and detergent in the button area, leading to uneven cleaning or longer drying times.

Decision Checklist

• Is the fabric sturdy enough to handle the extra tension of closed buttons?
• Are the buttons firmly attached and not prone to falling off?
• Will the wash cycle involve high spin speeds or rough agitation that could stress the buttonholes?

Alternatives to Consider

Instead of buttoning, you can turn the shirt inside out, use a laundry bag, or fasten only the top few buttons. These approaches protect both the fabric and the buttons while still reducing the chance of tangling.

Final Recommendation

For most everyday cotton or polyester shirts, buttoning before a gentle wash is a reasonable habit that helps preserve shape. For delicate, vintage, or loosely sewn shirts, it’s safer to leave them unbuttoned or use a laundry bag. When in doubt, test a single item or consult the garment’s care label.