What’s the difference between single fold bias tape and double fold bias tape?

Bias tape is one of the most useful sewing notions and can be used to neaten and trim almost anything.  It is perfect for a decorative finish on a curved edge because the bias will bend and ease around the curve. There are two basic type of bias tape: single fold bias tape and double fould bias tape. Then what’s the difference between them?

Single fold bias tape has two folds. It is made from strips of fabric cut on the bias (diagonal) and folded in on each edge to meet in the middle. Store-bought single fold bias tape is conveniently wound around a piece of cardboard for neat storage.

The most commonly used width is 1/2 inch which is used for finishing necklines and armholes. You can choose to sew the bias tape so it is hidden on the inside of the garment or on the outside for an attractive contrast look.

Double–fold bias tape has three folds. It is folded on the edges like single fold tape and then folded in half again making it easier to wrap around the edges of your article.

Double-sided tapes are slightly wider on one side ensuring you catch in both sides when you are sewing. Once again the most commonly used size is 1/2 inch and 5/8 inch.