Iron-on interfacing is a material that adds structure and support to fabrics in sewing and craft projects. It’s commonly used for shirt collars, cuffs, bag linings, and quilting to help fabrics hold their shape. You simply place the interfacing on the wrong side of your fabric and use an iron to bond them together. This makes it a popular choice for both beginners and experienced crafters who want a quick, no-sew way to reinforce their creations.

• Fusible Interfacing: Bonds to fabric with heat from an iron, making it easy to apply.
• Sew-in Interfacing: Attached by sewing, offering flexibility for delicate or heat-sensitive materials.
• Double-sided Fusible Interfacing: Bonds two layers of fabric together, often used for appliqué or craft projects.

Each type comes in different weights, so you can match the interfacing to your project’s needs.

The side of iron-on interfacing with a slightly shiny or textured surface is the adhesive side—it should face the wrong side of your fabric. You’ll usually notice tiny dots or a rougher feel on the adhesive side. Always double-check before ironing to avoid sticking the interfacing to your iron instead of your fabric. If you’re unsure, test a small corner first.

Pressing time can vary, but a good guideline is to hold the iron in place for about 10–15 seconds per section. Use a pressing cloth to protect your fabric and keep the iron on medium heat (no steam). Move the iron slowly and avoid sliding it around to ensure even bonding. Always check the instructions that come with your interfacing for the best results, as times and temperatures can differ.

Yes, most fabrics with iron-on interfacing can be washed, but it’s best to use a gentle cycle and cool water. To help the interfacing stay bonded, avoid high heat in the dryer and skip bleach. If you’re working on a project that will be washed often, look for interfacing labeled as washable. Always check the care instructions for both your fabric and interfacing before laundering.