Is Fusible Interfacing Permanent?

Does Fusible Interfacing Wash Away?

Fusible interfacing is a type of fabric that’s used to add structure and stability to garments and other sewing projects. It’s commonly used in areas such as collars, cuffs, and waistbands to help them maintain their shape. One of the questions that often arises when using fusible interfacing is whether it’s permanent or if it will wash away over time.

The answer to this question depends on the specific type of fusible interfacing that’s being used. Some types of interfacing are designed to be permanent, meaning that they’ll not wash away or lose their shape over time. These types of interfacing usually require a high heat setting and a longer pressing time to properly activate the adhesive.

On the other hand, there are also types of fusible interfacing that are designed to be temporary or removable. These types of interfacing are often used for projects that require a temporary structure or for fabrics that can’t withstand high heat. Temporary fusible interfacing can be easily removed by washing the project, and it won’t leave any residue behind.

It’s also a good idea to test a small piece of fabric before applying the interfacing to your project to ensure that it adheres properly and won’t wash away.

In addition to the type of interfacing being used, the quality of the interfacing and the thread used to sew the project also play a role in determining how well the interfacing will hold up over time. Using a high-quality fusible interfacing, such as the Madeira Aerolock Premium Serger thread mentioned earlier, can help ensure that the interfacing remains in place even after multiple washes or strain.

Using high-quality interfacing and thread can also help ensure that the interfacing remains in place over time.

Tips and Techniques for Applying Fusible Interfacing Correctly

  • Choose the right type of fusible interfacing for your fabric
  • Pre-wash and dry your fabric before applying interfacing
  • Cut your interfacing slightly smaller than the fabric pieces
  • Lay the fabric wrong side up on a flat surface
  • Place the interfacing adhesive side down on the fabric
  • Use a press cloth or thin cloth to cover the interfacing
  • Set your iron to the recommended temperature for the interfacing
  • Press the iron over the cloth-covered interfacing, applying gentle pressure
  • Hold the iron in place for the recommended amount of time
  • Let the fabric cool completely before moving or sewing
  • Repeat the process for all fabric pieces that require interfacing
  • Check for any loose areas and reapply if necessary
  • Trim any excess interfacing from the fabric edges
  • Finish your project as desired


In conclusion, the permanence of fusible interfacing is subjective and dependent on various factors such as fabric type, washing technique, and thread quality. While fusible interfacing may provide temporary stability and support to garments and other textile projects, it’s long-term durability may be limited. To ensure a more long-lasting and reliable outcome, it’s advisable to use high-quality materials such as Madeira Aerolock Premium Serger thread. With it’s core-spun polyester composition, this thread is specifically designed to withstand the rigors of frequent washes and strain, making it an ideal choice for sergers/overlock and coverlock machines like the Janome CoverPro family. By selecting the right materials and utilizing proper sewing techniques, one can enhance the overall permanence and durability of their projects.

Scroll to Top