welting

Welting is a general term for a narrow strip of fabric, leather, or other material used to cover or create a decorative edge along a seam. It is most commonly seen as piping: a cord encased in a fabric tube that runs along the edge of upholstery, cushions, and drapery.

In upholstery, welting provides both a structural edge and a finished look. It is typically sewn into seams, and the welting cord is usually 1/4 to 1/2 inch wide, though widths vary. Welting can be made in matching or contrasting fabrics, and can be straight or curved to follow edges.

In shoemaking, welting refers to the strip of material—often leather—stitched to the upper edge and to the sole to form a durable, replaceable joint. This welting supports the outsole and allows it to be replaced. Common welted constructions include Goodyear welt, Blake stitch, and Norwegian welt; each uses a different sewing path and attachment method.

Welting also appears in other crafts as a decorative trim on furniture edges, headboards, curtains, and similar applications, where it serves to outline seams and add a polished finish. Materials can range from cotton and wool to leather and synthetic fabrics, chosen for color, texture, and durability.