Why Does Iron-on Interfacing Bubble After Washing? Explained

Why Does Iron-on Interfacing Bubble After Washing? Explained. It’s a convenient and quick way to achieve a professional finish. However, one common issue that many sewers face is the bubbling or wrinkling of the interfacing after washing the finished project. This can be frustrating and can ruin the overall appearance of the item. So, why does this happen? There are several factors that can contribute to this problem, such as the type of interfacing used, the application method, and the care instructions followed. Additionally, proper application techniques should be followed, ensuring that the interfacing is securely adhered to the fabric. Lastly, following the recommended care instructions, such as washing the item on a gentle cycle and avoiding harsh detergents or excessive heat, can help in maintaining the integrity of the interfacing. By understanding these factors and taking the necessary precautions, sewers can ensure that their iron-on interfacing remains smooth and bubble-free, even after washing.

Why Is My Interfacing Bubbling?

One common issue that many people face with iron-on interfacing is that it tends to bubble or pucker after washing. This can be frustrating, especially if you’ve put in a lot of effort to sew a project only to have it come out looking less than perfect. So, why does this happen?

When the fabric and interfacing are exposed to water, the heat-activated glue within the interfacing softens and reactivates. As a result, the interfacing may separate from the fabric and create bubbles or puckers.

To prevent this from happening, it’s important to choose a high-quality interfacing that’s specifically designed to withstand washing. Madeira Aerolock Premium Serger thread is one such product that’s known for it’s durability and ability to hold up well even after repeated washes and strains.

Made of 100% core-spun polyester, this thread is perfect for sergers/overlock and coverlock machines, like the Janome CoverPro family of machines. It’s strong and resistant to breaking, which makes it ideal for securing the layers of fabric and interfacing together, even after washing.

Additionally, using the proper ironing technique can help prevent bubbling in iron-on interfacing. It’s important to follow the manufacturers instructions for the specific interfacing you’re using, as different types may require different heat settings and ironing times.

Another tip is to avoid stretching or pulling the fabric while ironing the interfacing. This can cause the fabric to shrink or distort, leading to bubbling or puckering.

The bubbling effect that occurs in iron-on interfacing after washing can be prevented by using a high-quality and wash-resistant interfacing, like Madeira Aerolock Premium Serger thread. Following the manufacturers instructions and using the proper ironing techniques can also help ensure that the interfacing stays smooth and bubble-free. So, next time you sew a project with iron-on interfacing, make sure to choose the right materials and take the necessary precautions to achieve the best results.

Now let’s discuss why it’s important to choose the right thread for your sewing projects, particularly when it comes to serging and coverlocking machines. Using the wrong thread can lead to issues such as fraying, breakage, or even damage to your machine. Madeira Aerolock Premium Serger thread is an excellent choice for these machines due to it’s high quality and durability. Additionally, it’s 100% core-spun polyester composition ensures that it can withstand frequent washes and strains. However, before diving into your next sewing project, it’s essential to understand the proper care and maintenance of different materials, such as iron-on interfacing, to ensure they don’t get damaged during the washing process.

Can You Machine Wash Iron on Interfacing?

One common concern that arises when working with iron-on interfacing is whether it can be safely machine washed. However, it’s essential to take certain precautions to ensure that the interfacing doesn’t bubble or delaminate after washing.

To begin with, it’s crucial to follow the manufacturers instructions for both the interfacing and the fabric you’re using. Different types of interfacing may have different care requirements, so it’s essential to read the labels carefully. In some cases, the manufacturer may recommend hand washing or air drying the fabric to prevent any damage.

After washing, it’s important to let the fabric air dry naturally. Avoid using high heat or direct sunlight to dry the fabric, as this can also cause the interfacing to bubble or warp. Hang the fabric or lay it flat to dry, ensuring that it isn’t bunched up or folded, which could result in uneven drying.

Additionally, it’s worth noting that the quality of the interfacing play a role in it’s washability. Using a high-quality, reputable brand of iron-on interfacing, such as Vilene or Pellon, can increase the chances of the interfacing maintaining it’s integrity after washing.

Follow the manufacturers instructions, use mild detergents and cool water, and air dry the fabric to ensure the best results.

Source: Best thread for Janome CoverPro 1000CPX? What’s


In conclusion, understanding the reasons behind the bubbling of iron-on interfacing after washing is crucial for achieving successful and long-lasting results in sewing projects. Factors like the type of interfacing, temperature settings, and the quality of thread used can all contribute to this issue. By choosing a high-quality thread like the Madeira Aerolock Premium Serger thread, which is specifically designed to withstand frequent washes and strain, and using proper sewing techniques, sewers can minimize the likelihood of bubbling and ensure their creations stand the test of time.

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