Recycled Yarns: What They Are, How They're Made and When to Choose Them | Fancy Yarns Australia

Recycled yarn covers a lot of ground. Recycled cotton, recycled wool, recycled denim, recycled PET: each comes from a different source, behaves differently on the needle or hook and suits different projects. Here's what recycled yarn actually is, how it's made, what to expect in terms of texture and performance, and how to think about choosing the right one.

What Is Recycled Yarn?

Recycled yarn is made from existing textile fibres that have been reclaimed, reprocessed and spun again rather than fibre grown or manufactured from scratch.

The raw material generally comes from one of two sources:

Pre-consumer waste

Material left over from manufacturing, such as fabric off-cuts, spinning waste or unused stock. This fibre has never been used or worn.

Post-consumer waste 

Used clothing and textile products that have been collected, cleaned and processed back into usable fibre.

Recycled yarns come in a wide range of compositions: recycled cotton, recycled wool, recycled denim, recycled PET (from plastic bottles) and blends that combine recycled fibre with virgin fibre for added strength.

How Is Recycled Yarn Made?

1. Collection

Fibre producers collect textile waste from mills, manufacturers, recycling facilities or second-hand garments.

2. Sorting and cleaning

Materials are sorted by fibre type and colour. Sorting by colour reduces the need for dyeing later in the process, which saves water and chemical use. Materials are then cleaned to remove dirt, residue and any non-fabric components like zippers or buttons.

3. Processing

This is where recycled yarn diverges depending on the method used:

• Mechanical recycling shreds textiles into fibre using mechanical force. It's the more common and lower-cost method, and it requires no chemical processing, but it does shorten the fibre. Virgin cotton fibre typically runs 20–25mm in length; mechanically recycled cotton is often closer to 15mm or shorter. Shorter fibres are more prone to slipping apart during spinning, which can reduce strength.

• Chemical recycling dissolves the fibre down to its cellulose base and regenerates it, preserving fibre length and yielding a higher-quality result. It's a more complex and costly process, so it's less widely available, but it's improving and expanding.

4. Blending

Because mechanically recycled fibre is shorter, it's very often blended with longer virgin fibre to restore strength and spinnability. Most recycled cotton yarn on the market contains somewhere between 20% and 50% recycled content for exactly this reason. 100% recycled cotton yarn is genuinely difficult to spin well.

5. Spinning

The prepared fibres are carded and spun into yarn using standard spinning methods.

What to Expect from Recycled Yarn

Recycled yarn is not identical to virgin fibre yarn, and it's worth understanding the differences rather than being surprised by them.

Texture can be slightly different

Shorter fibres from mechanical recycling can produce a yarn with a bit more texture or a looser hand than an equivalent virgin-fibre yarn. This is a direct, explainable result of the process, not necessarily a flaw. In fact, many makers like the character it gives finished pieces.

It's rarely 100% recycled

Most recycled yarns are blends, combining recycled fibre with virgin fibre for strength. If a yarn label says "recycled cotton," check the percentage. It tells you more about performance than the word "recycled" alone does.

Colour tends to be more limited or muted

Post-consumer fibre is often used close to its original colour rather than fully redyed, since colour-sorting during collection reduces the need for dyeing. This gives many recycled yarns an earthy, heathered palette rather than saturated, uniform colour, which is part of their visual character rather than a limitation.

Swatching matters more than usual

If you're substituting a recycled yarn into a pattern written for a different fibre, swatch first. Gauge and drape can behave differently, especially with shorter-fibre yarns.

Recycled Yarn by Fibre Type

Recycled denim 

This yarn carries the natural colour variation of the original jeans, giving it a distinctive, flecked, indigo-toned character. Well suited to durable home décor, bags and modern garments with texture.

Recycled cotton and cotton blends 

These blends are breathable and comfortable, suited to summer garments, face cloths and accessories. Look for the recycled percentage on the label. Higher percentages generally mean more texture and less strength.

Recycled wool 

This fibre brings warmth with a lower environmental footprint than virgin wool and is often blended with other fibres to offset any loss of elasticity from the recycling process.

Recycled PET (from plastic bottles)

This yarn is chemically processed rather than mechanically shredded, which means it doesn't lose strength the way natural fibres can. It can be surprisingly soft and is well suited to hats, bags, homewares and outdoor or high-wear projects.

Tips for Working with Recycled Yarn

Swatch first

This matters more with recycled yarn than most fibres, since gauge and drape can behave differently depending on fibre length and blend ratio. Always swatch before substituting recycled yarn into a pattern written for a different fibre.

Check the recycled percentage

A yarn labelled "recycled cotton" could be anywhere from 20% to 100% recycled. The percentage tells you more about how the yarn will perform than the word "recycled" alone.

Choose your needles or hook with texture in mind

Yarns with shorter, more textured fibre can benefit from slightly larger needles or hooks to let the stitches sit well and avoid a dense, stiff fabric.

Expect and embrace tonal variation

Recycled yarns, particularly recycled denim, often have subtle colour variation between skeins or even within a single ball. Buy a little extra where possible, and consider alternating skeins in larger projects for an even blend of tone.

Handle gently when blocking

Blends with shorter recycled fibre can be more prone to pilling or fibre shedding with heavy handling. A gentle steam block is usually safer than aggressive wet blocking.

Choosing Recycled Yarn: Environmental Impact Is One Factor, Not the Only One

Recycled yarn has real environmental benefits worth knowing: it reduces textile waste, uses significantly less water and energy than growing or manufacturing virgin fibre and gives existing material a longer working life.

But it's worth choosing recycled yarn because it's the right yarn for your project, not only because it's the more sustainable option on paper. Recycled yarns have genuine performance characteristics: durability in denim blends, softness in some cotton blends, surprising strength in PET yarns. They earn their place on technical merit, not just on principle.

Equally, if a project needs long-fibre strength, precise stitch definition, or elasticity that a mechanically recycled yarn can't offer, a virgin-fibre yarn may simply be the better tool for that job. There's no single "correct" choice, just the right yarn for what you're making.

Where to Find Recycled Yarn in Australia

At Fancy Yarns Australia, we stock a range of recycled yarns, including recycled cotton, recycled denim and recycled blends. Browse our full range of recycled yarns online. We ship directly from Canberra across Australia.

If you're a PlyPerks member, don't forget to log your purchase to earn points on every skein. Not yet a member? Joining is free.

We write our fibre guides to help you make informed choices, not just inspired ones. If you have questions about recycled yarns or any other fibre we stock, we're always happy to help.