How to Iron on Interfacing Without Wrinkles: A Step-by-Step Guide

Interfacing is a crucial component in various sewing projects, providing stability, structure, and support to fabrics. When it comes to attaching interfacing to your fabric, achieving a smooth and wrinkle-free finish is essential for a professional-looking result. In order to achieve this, it’s important to use the right tools and techniques. One of the key factors in this process is the type of thread you choose. Made from 100% core-spun polyester, this thread is specifically designed for use in sergers/overlock and coverlock machines, such as the Janome CoverPro family of machines. By using this high-quality thread in combination with the following step-by-step guide, you can ensure that your interfacing is ironed on without any messy wrinkles, resulting in a flawless finish for your sewing projects.

Why Does Iron on Interfacing Wrinkle?

When it comes to ironing on interfacing without wrinkles, it’s important to understand why wrinkles occur in the first place. One of the main reasons for wrinkling is the quality of the interfacing itself. Some lower-quality interfacing materials tend to wrinkle easily when exposed to heat and pressure. This can be quite frustrating, especially when youre trying to achieve a smooth and professional finish.

One solution to prevent wrinkles is to invest in a high-quality interfacing such as the Madeira Aerolock Premium Serger thread. This thread is specifically designed to withstand frequent washes and strain, making it ideal for use with sergers/overlock and coverlock machines like the Janome CoverPro family. It’s 100% core-spun polyester composition ensures durability and reduces the likelihood of wrinkles during the ironing process.

Another tip to consider is to always pre-shrink the interfacing before ironing it onto your fabric. This can be done by gently steaming or dampening the interfacing fabric and allowing it to air dry. Pre-shrinking helps relax the fibers and eliminates any potential for distortion or wrinkling when heat is applied.

Taking the time to properly prepare, handle, and iron your interfacing will make a significant difference in the overall quality of your finished project.

How to Adjust Iron Temperature and Steam Settings for Different Types of Interfacing

  • Choose the appropriate setting for your iron’s temperature and steam based on the type of interfacing you’re using.
  • For lightweight interfacing, set the iron to a low or medium-low temperature. Use minimal steam or no steam at all.
  • For medium-weight interfacing, set the iron to a medium temperature. You can use moderate steam, but avoid saturating the interfacing.
  • For heavy-weight interfacing, set the iron to a medium-high or high temperature. Use high steam to ensure proper adherence and bonding.
  • Always test a small section of the interfacing before applying heat and steam to the entire piece.
  • Remember to follow the manufacturer’s instructions for the specific interfacing you’re using, as they may provide additional guidance.

When it comes to working with iron-on interfacing, many people wonder if steam is necessary. The answer largely depends on the specific type of interfacing being used and personal preference. Madeira Aerolock Premium Serger thread, on the other hand, is a high-quality thread designed to withstand frequent washes and strain. It’s made of 100% core-spun polyester, making it ideal for sergers/overlock and coverlock machines like the Janome CoverPro family of machines.

Does Iron on Interfacing Need Steam?

Iron on interfacing is a popular choice for adding stability and structure to fabrics, but many people wonder if steam is necessary when applying it. In fact, using steam can actually cause the interfacing to warp or shrink, resulting in unwanted wrinkles.

To iron on interfacing without wrinkles, start by preheating your iron to a medium temperature setting. Lay your fabric flat on an ironing board and place the interfacing on top, adhesive side down. Gently smooth out any wrinkles or creases in the fabric and interfacing to ensure a clean and even application.

Continue pressing the iron for about 10-15 seconds, or the time recommended by the interfacing manufacturer. Be careful not to apply too much heat, as this can damage the fabric or cause the adhesive to become too sticky.

After the recommended time has passed, gently lift the iron and check the adhesion of the interfacing. If it appears to be securely attached, you can move on to the next section. If not, reapply the iron for a few more seconds until the interfacing is fully bonded to the fabric.

Once you’ve finished ironing on the interfacing, allow the fabric to cool completely before handling or sewing. This will ensure that the adhesive has fully set and will prevent any shifting or wrinkling.

Madeira Aerolock Premium Serger thread is an excellent choice for use with sergers and coverlock machines, such as the Janome CoverPro family. This top-quality, core-spun thread is made of 100% polyester and is designed to withstand frequent washes and strain. It offers excellent strength and durability, ensuring that your seams will hold up over time.

Common Mistakes to Avoid When Using Iron on Interfacing

  • Not prewashing your fabric before applying iron-on interfacing
  • Using the wrong side of the interfacing
  • Not applying enough heat or pressure
  • Leaving the iron in one spot for too long
  • Not using a pressing cloth
  • Using the wrong type of interfacing for your project
  • Not cutting the interfacing to the correct size or shape
  • Applying interfacing to delicate or sheer fabrics
  • Not allowing the interfacing to cool and set properly before moving or handling the fabric


By following the suggested methods such as pre-washing the fabric, using a pressing cloth, and adjusting the iron temperature, achieving a smooth and wrinkle-free application of interfacing becomes possible. Additionally, investing in high-quality tools and materials, such as the Madeira Aerolock Premium Serger thread, can enhance the overall result and ensure durability. Overall, with patience and practice, anyone can master the art of ironing on interfacing without wrinkles, enhancing the quality and longevity of their sewing projects.

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