How to Stretch Spandex Fabric: 8 Methods for a Perfect Fit

If you've had trouble with tight spandex clothing, there are several safe ways to stretch the fabric. Spandex is designed to be elastic and form-fitting. But sometimes, you'll need to adjust its size or restore its flexibility. 

Understanding the proper techniques can help you modify your garments without damaging the material's essential properties. The key lies in knowing which method best suits your specific situation and how to apply it correctly.

Key Takeaways

• Soak spandex in hot water (120-130°F) with fabric softener to relax fibers before stretching.
• Gently pull and stretch the fabric while damp. Maintain even pressure to avoid damage.
• Mix equal parts rubbing alcohol and white vinegar. Then, apply it to the fabric while stretching for a gentler approach.
• Use water-filled balloons inside garments for gradual, controlled stretching without causing damage to the fibers.
• Steam treatment allows fiber relaxation. Hold the steamer 6 inches away while pulling the fabric to the desired size.

What Is Spandex Fabric?

Spandex is a synthetic fabric, also known by the generic name elastane. It's made from polyurethane-polyurea copolymer that's prized for its exceptional elasticity.

You'll find this synthetic fabric in everything from yoga pants to swimsuits. This is because of its remarkable stretch and recovery properties.

When you examine spandex fibers closely, you'll notice they can stretch up to 500% of their original length and quickly return to shape.

Unlike natural fibers, elastane maintains its stretchy qualities through repeated use and washing.

The spandex fabric's durability and flexibility make it ideal for form-fitting garments. Plus, it's often blended with other materials to add stretch while maintaining breathability.

What Makes Spandex Less Stretchy?

Even though elastane fibers are durable and recover well, various factors can slowly reduce their elasticity over time.

Your spandex can lose its elasticity when exposed to excessive heat. This includes hot water washing and high-temperature drying.

Chemical exposure from harsh detergents or chlorine will break down the elastic fibers, leading to loss of stretch.

Frequent wearing and overstretching also weaken the material's ability to bounce back.

Avoid these damaging factors if you want your spandex to retain its shape.

How to Stretch Spandex Fabric: 8 Methods

Several proven methods exist for stretching spandex material to achieve your desired fit and dimensions.

1. Hot Water Method

The hot-water method offers a reliable way to make the spandex easier to stretch. This method provides a permanent stretch as the fibers relax and adjust to the new dimensions.

• Fill a sink or basin with hot water between 120-130°F.
• Add a capful of fabric softener to help relax the fibers further.
• Submerge your spandex item for 15-20 minutes.
• Remove the garment and gently squeeze out excess water without wringing.
• While the fabric is still warm and damp, gently stretch it in the desired direction. You can place weights on the edges or pin the fabric to maintain tension as it dries.
• Allow the spandex to air dry completely before wearing.

2. Dryer Method

For a more hands-off approach, consider using a dryer without damaging the fabric. This method results in a temporary stretch, as the fabric may revert to its original size after washing.

• Start by washing the spandex garment.
• Then, place it in the dryer in a low heat setting. 
• As it tumbles, periodically check and pull on fabric sections to stretch it out.
• Once you reach your desired size, remove the garment promptly to prevent it from shrinking back.

This method allows for an even heat distribution while providing the necessary stretch.

3. Hand Stretching

Hand stretching spandex needs careful and gentle handling to get good results without harming the fabric's elasticity. This technique achieves a temporary stretch.

• To begin, gently pull the fabric in opposite directions. Maintain even pressure across the material's surface.
• When you stretch fabric, focus on small sections at a time to guarantee uniform expansion.
• Handle the fabric with care as you stretch and shape it to your desired dimensions.
• Work systematically from one end to the other, allowing the material to gradually expand.
• Between stretching sessions, let the spandex rest for a few minutes to prevent overstretching and help it maintain its original shape.

4. Use Weights

When stretching spandex using weights, you'll need to distribute weight evenly across the fabric to achieve consistent results. This method leads to a permanent stretch by applying consistent pressure over time.

• To begin, lay your spandex on a flat surface and secure one end.
• Attach weights gradually to gently stretch the fabric. Start with lighter options like small dumbbells or water bottles.
• Increase weight slowly over time, monitoring the fabric's response to prevent overextension.
• For wider pieces, use multiple weights spaced evenly apart.
• Allow the spandex to rest under the weights for 24-48 hours.
• Check periodically for signs of stress or damage.

5. Use a Steamer

Steaming offers a gentler but temporary approach to stretching spandex compared to using weights. When you apply steam to your spandex garment, the heat and moisture cause the fibers to relax and become more pliable. 

• Start by hanging your garment and steam each section for 30 seconds. As you work, the fabric will gradually expand.
• Hold your steamer about 6 inches away from the stretchy fabric. Gently pull it in the desired direction.
• Don't stretch too aggressively while steaming, as this can damage the material.
• Allow the spandex to cool completely before wearing to help set the new shape.

6. Ironing Method

Although ironing requires extra care, this method can effectively stretch spandex permanently when done correctly. 

• Before ironing any spandex item, check the fabric composition tag to verify it can withstand heat.
• Set your iron to the lowest heat setting suitable for synthetic materials.
• Place a damp cloth between the iron and the garment to avoid damaging the material.
• Iron in gentle, continuous motions while slightly pulling the fabric in the direction you want it to stretch.
• Don't hold the iron in one spot for too long. After ironing one section, let it cool completely before moving to another area.

7. Use the Alcohol-Vinegar Solution

The alcohol-vinegar solution offers a chemical-based approach to permanently stretching spandex that's gentler than direct heat methods. 

• Mix equal parts rubbing alcohol and white vinegar in a spray bottle.
• Then, lightly mist your spandex fabric until damp but not soaked.
• Pull the fabric in the direction you want to stretch while it's still damp with the solution.
• You'll need to maintain tension on the spandex for several minutes as the mixture works to relax the fibers.
• Once you've achieved the desired stretch, let the fabric air dry completely while holding its new shape.

8. Water Balloon Method

To temporarily stretch the spandex garments, the water balloon method offers steady, controlled pressure without harming the fabric's elasticity.

• Fill a basin with cold water and soak your spandex item for 15 minutes.
• Place water balloons strategically inside the garment where you need it to stretch more easily. 
• Position multiple balloons for even distribution, ensuring the weight remains balanced.
• Adjust balloon sizes according to how much stretch you need in specific areas.

The weight of the water creates steady pressure as the fabric will stretch naturally overnight. This gentle way to stretch prevents fiber damage while maintaining elasticity.

How to Care for Spandex After Stretching It

Taking care of spandex after stretching helps keep its elasticity and increases its lifespan through regular washing and storage.

After stretching your spandex clothing, thoroughly rinse it in cool water to remove any residue or dirt that could damage the fibers.

When washing spandex, choose the gentle cycle on your washing machine. Use cold water and a mild detergent designed for this type of fabric.

Avoid using fabric softeners or bleach, as these chemicals can cause spandex to lose its stretch.

Allow your garments to air dry or hang them up to avoid heat damage, which can weaken the material's elasticity.

Conclusion

Now that you've learned how to stretch spandex properly, you can extend the life of your garments. Whether you choose the hot water method, steam treatment, or alcohol-vinegar solution, remember to handle the fabric gently and maintain even tension.

Regular care and proper storage will help preserve the elasticity of your stretched spandex items for long-lasting wear.

Learn more fabric knowledge on the Longan Craft Blog, and dive into the fabric world with Longan Craft!

FAQs

Can Spandex Clothing Be Stretched if It Has Been Dyed?

Yes, you can stretch dyed spandex. But you'll need to be gentle to prevent color bleeding. It's best to test a small area first and avoid excessive stretching that might damage the fabric's fibers.

How Long Should I Wait Between Stretching Sessions?

You'll want to wait at least 24 hours between stretching sessions to let the fabric recover. If you stretch dyed spandex, give it 48 hours to prevent damage and maintain the color.

Does Stretching Spandex Affect Its Durability Over Time?

Yes, repeatedly stretching spandex can affect its durability. The fabric may become looser and lose stretch over time. It's best to stretch gently and avoid overstretching to maintain its quality.

Is It Possible to Stretch Spandex Back to Its Original Size?

You can't fully restore stretched spandex to its original size. Gentle heat and washing might help a little. But once spandex fibers are overstretched, they're permanently damaged and won't go back to their original state.