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Sheet thread count explained

What is thread count?

So what does thread count mean? Sheet thread count refers to the number of threads (strands of fabric) per square inch of fabric. This is calculated by counting the number of horizontal threads and the number of vertical threads which make up the weave of the fabric.

According to Hayley, it’s important to understand thread count when looking at bed sheets just to get a general idea of the fabric, but it’s certainly not the be all and end all.

The quality of the actual threads — what they are made from and what type of threads they are — should be the main point of consideration, not just how many of them there are.

Visual representation of thread count

When you invest in a premium quality mattress, it might also be worthwhile investing in great quality bed linen. Thread count has become a popular predictor in the search for the softest, most sleep-inducing bed linen. But when it comes to buying bedding for your new mattress, is thread count really the final word in good quality sheets? In short — no.

We sat down with Hayley Worley, founder of The Sheet Society, to take a closer look at thread count and other factors that can take your bed linen to the next level.

Is a higher thread count better?

Thread count has nothing to do with a fabric’s breathability, comfort or softness. A 400 thread count sheet may be softer and more breathable than a 1000 thread count sheet.

For example, a 100% bamboo fibre sheet is much softer and more slippery than a 100% cotton sheet, even if they are the same thread count, meaning it’s impossible to define their characteristics by the thread count alone.

Breathability comes down to what the sheet is made from, as well. A sheet made from cotton is likely to have more breathability than a sheet made from polyester even if they are the same thread count. Softness and comfort also rely on the type of yarn.

Hayley also notes that some brands use thread count as a marketing ploy, preferring to ‘jam’ in as many threads as they can to increase the thread count. These threads are usually short, stubbly and clog up the fabric just for the sake of it. The shorter threads used in a higher thread count sheet are prone to pilling and don’t feel as soft when you run your hand across the fabric.

On the other side of the fence is Egyptian cotton. Renowned as the pinnacle of quality bed linen material, Egyptian cotton has longer threads so fewer threads are required to keep the fabric together.

What is thread count

What is the best thread count for sheets?

The best thread count is not always the highest number. The quality of the thread is more important than the number of threads in a fabric.

It is best to look for sheets with a thread count of around 200-600 for most fabrics. Higher thread counts (800-1000) are often more expensive for little variation in softness. In some cases, the heavier or thicker the fabric, the less breathable it may be.

We have a quick reference table for the expected range of high-quality thread counts broken down by fabric type. Note that some materials are not suited to measurement by thread count; instead, they are measured in momme (weight) or GSM (grams per square metre).

* In the case of linen, you may wish to avoid considerations of thread count altogether. As the fibres are heavier, lower thread counts are often preferable as they are likely to be softer and more breathable.

Fabric type Ideal thread count
Cotton
200-400
Egyptian cotton
300-800
Percale weave
200-400
Sateen weave
300-600
Bamboo
300-500
Linen
50-140 *
Silk
17-22 momme
Microfibre
90-120 GSM
Flannel
160-190 GSM

Shopping for thread count

Material of choice

Hayley’s material of choice is cotton, which is no surprise given the sheets from The Sheet Society are made from a long-staple cotton.

“I believe that natural is best, so 100% cotton is my top choice. If you look through your wardrobe, I’m sure your favourite items are also made from cotton, so it makes sense to follow this for your choice of sheets. It’s naturally hypoallergenic, odour-resistant and does not go through any harsh chemical treatments. Cotton fibres are really easy to maintain, breathable yet absorbent, and soft yet durable,” she says. “Plus, like a nice wine, cotton fibres soften wash after wash so they get even better with age.”

Some weaves to know

When shopping for bed sheets, you might come across the terms ‘sateen’ and ‘percale’. These names refer to the type of weave the yarns have undergone to make up the fabric.

Percale means that the threads are woven in a ‘one over, one under’ process to create the weave. “Picture a piece of hessian or woven basket where you can see the string go under, over, under, over: that’s how percale is woven. Percale is a very crisp, classic fabric to use for a sheet,” says Hayley.

Sateen is a bit more complicated. The thread goes four over, one under, four over, one under in an alternating pattern.

The easiest way to picture this is if you imagine a brick path pattern with four horizontal and then vertical. A sateen weave gives the fabric a softer and shinier look as there are more flat threads on the surface.

Black and pink coloured pillows and bedding

Top things to look out for when buying bed sheets

Investing in high-quality bedding is important not just for the look and feel but for helping to improve your overall sleep health. Hayley encourages people to look out for these top three things to look for when buying bed sheets:

1. The fabric itself

“Cotton for example is a natural fibre which allows the fabric to breathe with your body temperatures, but when it’s mixed with polyester that really changes the overall breathability properties,” Hayley says.

2. Workmanship and style

“People don’t tend to really know this until they’ve unwrapped the bundle when they get home. There’s nothing worse than a pillowcase that has a shallow opening that your pillow falls out of or a quilt cover that has a million pesky little buttons or ties to do up.”

3. Thoughtful design

“Since you generally change your sheets every few weeks, it’s important that the design is as user friendly as possible. Another thing to look for is the stitch density of the sewing lines. If you can count around 5 stitches in 1cm that’s a sign its generally been sewn with care, but if it’s more like 2 or 3 stitches in a 1cm then it’s been rushed through the sewing machine too quickly and can be a dead giveaway that it’s not made well,” she says.

As you can see, there are many more important factors than thread count when it comes to buying bed sheets. You don’t need to become an expert on bed sheets to find your perfect match, though. All you need to do is understand your needs, look for suitable fabric choices and choose what feels right for you.

FAQs on thread count

What is thread count?

Thread count refers to the number of threads or strands per square inch of fabric, counting horizontal and vertical threads. It indicates how tightly woven the fabric is. This number is an approximate indicator of fabric softness, but does not always translate to higher quality.

What is the highest thread count for sheets?

The highest thread count for sheets is usually 1,000. Anything above that number is often lower quality. In fact, a 1,000 thread count is not always a marker of quality or softness.

Are 1000 thread count sheets worth it?

A high thread count is not always a marker of quality or softness. Thread count has nothing to do with a fabric’s breathability, comfort or softness. A 400 thread count sheet may be softer and more breathable than a 1,000 thread count sheet.

Are 1200 thread count sheets worth it?

A higher thread count is not always a marker of quality or softness. Anything above 1,000 thread count is likely to be of lower quality. Some manufacturers will try to use as many threads as possible, but the softness and quality of the fabric is sacrificed in the process.

Is 1500 a good thread count for sheets?

A higher thread count is not always a marker of quality or softness. Anything above 1,000 thread count is likely to be of lower quality. Some manufacturers will try to use as many threads as possible, but the softness and quality of the fabric is sacrificed in the process.

Are higher thread count sheets always better?

High thread count does not always mean quality. It is more important to consider what your sheets are made of. For example, 100% bamboo fibre is much softer than 100% cotton, even if they are the same thread count. Any count over 1,000 is likely to be of lower quality.

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