How to iron on a patch without an iron

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If you don't have an iron, a pair of hair straighteners is the most reliable substitute for small patches: they get hot, press from both sides and are easy to hold still. A flat-bottomed pan of just-boiled water can work at a push, but it struggles to stay hot enough. If you want a patch to stay on for good without any heat at all, fabric glue or a few stitches will do a better job than any improvised heat source.

The usual problem with no-iron methods is not enough heat for long enough. The glue softens but never properly melts into the fabric, so the patch looks fine for a day and peels off in the first wash.

Check the fabric first

Read the care label before you use heat of any kind:

• Three or two dots on the iron symbol: heat methods are fine. Cotton, denim and polycotton are ideal.
• One dot or a crossed-out iron: don't use heat. Use fabric glue or sew the patch on. This covers most nylon, waterproofs, sportswear and stretchy fabrics.
• PVC or rubber patches should never be heated. They melt. Sew them on through the stitching channel instead.

Whichever method you use, put a thin cotton cloth (a tea towel or pillowcase) between the heat and the patch, and work on a firm, heat-safe surface.

Methods compared

Using hair straighteners

1. Clean the plates so no hair product transfers onto the fabric, and let them heat to their highest setting the fabric allows.
2. Position the patch glue side down on the garment.
3. Fold a thin cloth over the patch so it covers both sides of the area you'll clamp.
4. Clamp the straighteners over the patch and fabric and hold them still with firm pressure for about 30 to 45 seconds, the same as you would with an iron. Don't slide them.
5. Work in overlapping sections if the patch is wider than the plates, and finish by going round the edges.
6. Let it cool completely, then check the edges with a fingernail and press any loose spots again.

Straighteners are good for patches on a cap or near a seam, where an ironing board can't reach. Keep the plates away from your fingers and put them down on a heat-proof mat between presses.

Using a pan of hot water

This is the method of last resort. It can work on a small patch on cotton or denim, but results are less dependable than with an iron.

1. Use a heavy, flat-bottomed saucepan with a clean, dry base. Wipe off any grease or soot first, or it will mark the fabric.
2. Fill it a third to half full and bring the water to the boil. Don't overfill it, or it may slop over when you press.
3. Lay the garment on a hard, heat-proof surface, such as a wooden chopping board on the worktop, with the patch in place and a cloth over it.
4. Carefully lift the pan off the heat, using an oven glove, and press its base down on the patch, holding it still for about 45 to 60 seconds.
5. Reheat the water and repeat, including on the inside of the garment behind the patch.
6. Let it cool fully and check the edges.

Be honest with yourself about the result. A pan of water can't get as hot as an iron, so the glue may only half melt. If the patch lifts after cooling, add some stitches or a little fabric glue around the edge. Keep children and pets out of the way and never carry the pan over your lap or the garment while you're wearing it.

A mini iron or heat press

If you do this more than once, a mini craft iron is cheap to own and made for small patches and tight spots. For lots of patches, a heat press gives even heat and pressure every time. Our guide to the best irons and heat presses for patches explains the options. Either way, follow the instructions that came with it for heat and time.

Using fabric glue instead

Many iron-on patches can simply be glued. Spread a thin layer of washable textile glue on the back of the patch, keeping it a few millimetres in from the edge, press it in place, and weigh it down while it sets. Most glues need a day or more to cure fully before washing, so check the instructions. If you're using a solvent-based glue, work in a well-ventilated room. Our guide to the best fabric glue for patches compares the types.

Don't

• Don't use heat on fabrics labelled one dot or "do not iron".
• Don't heat PVC or rubber patches. Sew them instead.
• Don't skip the cloth. Straightener plates and pan bases can scorch embroidery and mark fabric.
• Don't use a hairdryer. It doesn't get hot enough or press, so the glue won't bond.
• Don't wash the garment straight away. Give heat-applied patches a day and glued patches the full cure time.

Common questions

Can I use a hair straightener to iron on a patch?

Yes, for small patches. Use a cloth over the patch, clamp firmly and hold still for about the time you'd use with an iron, working in sections for wider patches.

Can you use a hairdryer to put on an iron-on patch?

Not really. A hairdryer doesn't get hot enough and gives no pressure, so the glue softens but doesn't bond. Use straighteners, glue or stitches instead.

Does a pan of hot water work to iron on a patch?

It can on small patches on cotton or denim, but it's less reliable because the pan cools quickly. Press from both sides, and add a few stitches if the edges lift.

What's the best way to attach a patch with no iron?

For a permanent result, sew it on or use a washable fabric glue. Both work on fabrics that can't take heat, too.

Based on manufacturer instructions and established sewing practice. How we write our guides.