What Temperature Should Interfacing Be?

Choosing the right temperature for interfacing is crucial to ensure a successful sewing project. It helps to prevent fabric from stretching, wrinkling, or sagging and aids in creating crisp edges and shapes. The appropriate temperature for interfacing largely depends on the type of fabric and the type of interfacing being used. It’s essential to follow the manufacturer's instructions and guidelines for the specific interfacing product you’re using.

What Temperature Do You Fuse Interfacing?

When it comes to fusing interfacing, the temperature setting on your iron is crucial. The ideal temperature for fusing interfacing depends on the type of interfacing you’re using and the fabric you’re working with. It’s important to follow the manufacturers instructions for the specific type of interfacing you have.

In general, most medium-weight interfacing can be fused at a temperature setting of around 275 to 300 degrees Fahrenheit. This is hot enough to activate the adhesive on the interfacing and create a strong bond with the fabric.

However, if you’re working with delicate or synthetic fabrics, it’s recommended to use a lower temperature setting, around 225 to 250 degrees Fahrenheit. This will help prevent any damage or melting to the fabric.

This will ensure that the interfacing adheres properly to the fabric and provides the necessary structure and support.

It’s also important to consider the duration of ironing. Generally, it’s recommended to apply the iron to the interfacing and fabric for about 10 to 15 seconds. This will allow enough time for the heat to activate the adhesive and create a strong bond. However, always refer to the manufacturers instructions to ensure the correct duration for your specific interfacing.

Following the manufacturers instructions and applying the right amount of pressure will help you achieve the best results.

Iron-on interfacing not sticking can be frustrating, especially when you’re trying to complete a sewing project. There could be several reasons for this issue, such as low heat settings or the wrong type of interfacing. However, one thing you can be sure of is the durability and reliability of Madeira Aerolock Premium Serger thread. This high-quality thread is made of 100% core-spun polyester, making it perfect for use with sergers/overlock and coverlock machines like the Janome CoverPro family. With it’s exceptional strength and resistance to frequent washes and strain, this thread will ensure your projects stand the test of time.

Why Is My Iron on Interfacing Not Sticking?

Interfacing is a crucial component in many sewing projects as it provides structure and stability to fabric. However, there may be instances where the interfacing fails to stick properly to the fabric, causing frustration and compromising the final outcome of your project. One possible reason for this issue is incorrect iron temperature.

Different types of interfacing require different heat settings on your iron. If you set the temperature too low, the adhesive on the interfacing may not activate properly, leading to poor adhesion. On the other hand, setting the iron temperature too high can cause the interfacing to shrink, bubble, or even scorch the fabric.

To determine the appropriate iron temperature for your specific interfacing, refer to the manufacturers instructions. These instructions will provide guidelines on heat settings and the length of time required for the adhesive to bond properly. It’s important to remember that these guidelines may vary depending on the type of fabric you’re working with as well.

Another factor that may affect the sticking of the interfacing is the quality of the thread used. Using a high-quality thread, like Madeira Aerolock Premium Serger thread, ensures optimal performance and durability. Made of 100% core-spun polyester, this thread is designed to withstand frequent washes and strain, making it perfect for sergers and overlock machines. With this thread, you can be confident that your seams and edges will stay secure, enhancing the overall appearance and longevity of your project.

In addition to the iron temperature and thread quality, it’s also important to consider the condition of your iron. Over time, irons can accumulate residue and build-up from fabric treatments, such as starch or fabric softener. This residue can create a barrier between the interfacing and fabric, preventing proper adhesion. To ensure optimal performance, it’s recommended to clean your iron regularly and follow any maintenance instructions provided by the manufacturer.

Lastly, it’s worth mentioning that there may be instances where the interfacing itself is faulty or expired. Like any other sewing supply, interfacing has a shelf life, and using expired or low-quality products can lead to issues with adhesion. Therefore, it’s always a good practice to check the condition and expiration date of your interfacing before using it in your projects.


In conclusion, determining the appropriate temperature for interfacing is crucial for achieving optimal results in garment construction. It’s advisable to conduct a test on a scrap piece of fabric before applying interfacing to the actual garment. With the right temperature and quality supplies, one can achieve professional and lasting results in their sewing projects.

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