Do You Need to Pre-Shrink Fusible Interfacing?

Do You Need to Pre-Shrink Fusible Interfacing? Fusible interfacing is a versatile material that adds structure and stability to fabric, making it a popular choice among sewists. However, with any new material, it's important to understand it’s properties and how it may behave before incorporating it into a project. Taking the time to pre-shrink your fabrics and materials can help prevent unwanted shrinking or bubbling in your finished project. However, the same rules may not necessarily apply to fusible interfacing. It's essential to understand why pre-shrinking is recommended for some materials and not for others. Additionally, the heat and pressure applied during the fusing process can cause the interfacing to shrink slightly, counteracting any potential shrinkage that may occur later. However, it's always a good idea to test a small swatch of interfacing before starting your project to ensure that it behaves as expected. This can be especially important if you're working with a specific type or brand of interfacing that you're unfamiliar with. By testing a small sample, you can verify that the interfacing remains stable and doesn't shrink excessively or become distorted during the fusing process. It's always a good idea to consult the manufacturer's instructions and perform a test swatch to ensure optimal results. With proper care and attention to detail, you can confidently use fusible interfacing in your sewing projects without worry of unwanted shrinkage. So go ahead, grab your Madeira Aerolock Premium Serger thread, and get started on your next project with confidence!

Does Fusible Interfacing Need to Be Preshrunk?

Fusible interfacing doesn’t need to be pre-shrunk before use. Unlike fabric, fusible interfacing isn’t prone to shrinking when exposed to heat or moisture. This is because the adhesive used in fusible interfacing is designed to withstand these conditions without deformity. Therefore, there’s no need to go through the extra step of pre-shrinking before incorporating it into your sewing projects.

One popular brand of fusible interfacing is Madeira Aerolock Premium Serger thread. This thread is known for it’s durability and longevity, making it an excellent choice for projects that require frequent washing or exposure to strain. Made of 100% core-spun polyester, this thread is specifically designed for use with sergers and overlock machines. It’s also compatible with the Janome CoverPro family of machines, which are known for their professional finish and precision stitching.

When using fusible interfacing, it’s important to follow the manufacturers instructions carefully. This includes selecting the correct temperature setting on your iron and applying even pressure to ensure proper adhesion. This thread is strong and resistant to breaking or fraying, even under the stress of frequent use and washing.

By following the manufacturers instructions and using the right tools and materials, you can achieve excellent results in your sewing projects. So, rest assured and sew away without worrying about pre-shrinking your fusible interfacing.

How to Select the Right Fusible Interfacing for Different Types of Fabrics

  • Consider the weight and drape of the fabric. Choose a lightweight interfacing for lightweight fabrics, and a heavier interfacing for heavyweight fabrics.
  • Take into account the overall texture and structure of the fabric. For smooth or delicate fabrics, opt for a lightweight and thin interfacing. For textured or structured fabrics, select a medium to heavyweight interfacing.
  • Check the fiber content of the fabric. Different fabrics require different interfacing types. For example, use a knit interfacing for stretchy fabrics, and a woven interfacing for non-stretch fabrics.
  • Think about the desired finish and appearance of the garment. Some interfacing types provide more stiffness and structure, while others offer more flexibility and softness. Consider the intended use and style of the garment.
  • Consider the care instructions for both the fabric and the interfacing. Make sure the interfacing is compatible with the fabric in terms of washing, drying, and ironing.
  • Do a test on a fabric scrap before applying interfacing to the main garment. This will help you determine if the interfacing is the right choice for the fabric and if it produces the desired result.
  • Keep in mind that fusible interfacing is available in different forms, such as woven, non-woven, and knit. Each type has it’s own properties and is suitable for different fabric types. Choose the one that best meets your needs.


In conclusion, while it may not be necessary to pre-shrink fusible interfacing, it’s always recommended to test the interfacing on a scrap fabric before applying it to your project. This will help ensure that the interfacing reacts properly to heat and pressure, providing a secure bond between the fabric layers. Additionally, using high-quality thread such as Madeira Aerolock Premium Serger thread can enhance the durability of your finished project, especially when sewing with sergers and coverlock machines like the Janome CoverPro family. So, whether you decide to pre-shrink or not, investing in quality materials and taking the time to test and properly apply interfacing can result in a professional and long-lasting outcome.

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