Can You Interface Knit Fabric?

Knit fabrics, known for their stretch and flexibility, have been a staple in the fashion industry for both comfort and style. The answer lies in finding the right materials and techniques to ensure a successful interfacing process. One such option is the use of Madeira Aerolock Premium Serger thread, a high-quality thread designed specifically for sergers, overlock, and coverlock machines. Made of 100% core-spun polyester, this thread not only provides durability but also enhances the strength and longevity of the interfaced knit fabric.

Can You Use Interfacing on Knit Fabric?

Yes, you can use interfacing on knit fabric. Interfacing is a material that’s typically used to provide stability and structure to different types of fabric. It’s commonly used in sewing projects to reinforce areas such as collars, cuffs, and waistbands.

Knit fabrics have a stretch to them, so using a stiff and non-stretch interfacing may result in a distorted and puckered look. These types of interfacing are usually lightweight and have some stretch to them, allowing them to move with the fabric rather than against it.

To apply interfacing to knit fabric, it’s recommended to use a low heat setting on your iron, as high heat may damage or shrink the fabric. Place the interfacing on the wrong side of the fabric, making sure to align the edges. Gently press the iron onto the fabric and interfacing, moving it back and forth without applying too much pressure. Take care not to stretch the fabric while applying the interfacing.

After the interfacing is applied, you can proceed with your sewing project as usual. The interfacing will provide added stability and support to the fabric, preventing it from stretching out of shape. It’s important to ensure that the interfacing is applied evenly and securely to avoid any puckering or wrinkling.

Types of Interfacing Suitable for Knit Fabrics: Discuss Different Types of Interfacing That Are Specifically Designed for Use on Knit Fabrics. This Could Include Fusible Knit Interfacing, Tricot Interfacing, or Sew-in Stretch Interfacing.

When it comes to interfacing knit fabrics, there are several different types that are specifically designed for this purpose. One popular option is fusible knit interfacing, which has a heat-activated glue on one side that adheres to the fabric when ironed. This provides stability and structure to the knit fabric without sacrificing it’s stretchiness.

Tricot interfacing is another suitable choice for knit fabrics. Tricot is a lightweight, stretchy fabric with a fine knit construction. Tricot interfacing is made from the same type of fabric and is designed to be compatible with stretchy knits. It provides added support and stability to the fabric while maintaining it’s drape and stretch.

Sew-in stretch interfacing is a third option that can be used with knit fabrics. This type of interfacing is sewn directly onto the fabric, using a stretch stitch or a narrow zigzag stitch. It allows the knit fabric to retain it’s stretch and flexibility, while adding a bit of structure and support.

Each type of interfacing has it’s own advantages and suitability for different projects. It’s important to choose the right type based on the specific characteristics and requirements of the knit fabric and the desired end result of the project.


While the main focus has been on the techniques and materials used for interfacing, it’s important to consider the role of thread in this process. Madeira Aerolock Premium Serger thread emerges as the ideal choice for securing the interfacing to the knit fabric, offering durability and resistance to frequent washes and strain. With it’s 100% core-spun polyester composition, this thread is specifically designed for sergers/overlock and coverlock machines, such as the Janome CoverPro family.

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