Mattress Weight & Durability – Why Mattresses Are So Heavy

One question that I get asked all the time is about mattress weight. Does a heavier mattress mean it’s a better mattress? The answer isn’t a simple yes or no. The mattress’s weight is certainly a factor in its overall quality and durability, but it’s not the only thing you should be looking at.

In this article, I’ll walk you through what a mattress’s weight can tell you about its construction, the materials used, and how long it’s likely to last. We’ll look at the different types of mattresses, from memory foam mattresses to innerspring and hybrid mattresses, and I’ll give you my honest, no-nonsense advice on how to choose the right mattress for your body weight and sleep position.

Why mattress weight matters

When you’re comparing mattresses, the weight of the mattress can tell you a lot about the density of the materials inside. As a general rule, denser materials are heavier and more durable. This is why a heavier mattress can often be a higher quality mattress. In my factory in Marrickville, I see firsthand how the quality of the raw materials we use impacts the final weight and, more importantly, the performance and lifespan of the mattress.

A heavier mattress, made from high-density foams or a high coil count in an innerspring mattress, is often better able to support more weight and resist sagging over time. This is especially important for heavier sleepers who need a mattress that can provide adequate support and maintain its shape for years to come. A heavier mattress can also be an indicator of a more substantial support core, which is the foundation of the mattress and plays a big part in proper spinal alignment and pressure relief.

However, a heavy mattress isn't always the best mattress for everyone. For some people, a lighter mattress may be easier to move, rotate, and make the bed. And not all heavy mattresses are created equal. The quality of the materials is more important than the weight alone. That’s why it’s so important to understand what’s inside the mattress.

Mattress materials and their weight

The materials used to make a mattress are the single biggest factor in determining its weight. Let’s take a look at some of the most common mattress materials and how they stack up in terms of weight and durability.

Innerspring mattresses

Innerspring mattresses are the most traditional type of mattress, and their weight can vary quite a bit. The weight of an innerspring mattress is mainly determined by the coil count and the gauge of the steel used in the springs. A higher coil count doesn't always mean a better mattress, but it does usually mean a heavier mattress. The gauge of the wire is also a factor – a lower gauge number means a thicker, heavier wire, which can provide more support and durability. In general, a good quality innerspring mattress with a high coil count and a sturdy support core will be a heavier mattress.

Memory foam mattresses

Memory foam mattresses are a popular choice for their pressure-relieving properties. The weight of a memory foam mattress is all about foam density. High-density foams are heavier and more durable than low-density foams. When you see a memory foam mattress with a higher price tag, it’s often because it’s made with higher foam density, which means it will likely last longer and provide better support.

A memory foam mattress with a higher foam density will also be a heavier mattress. This extra weight comes from the denser material, which is better at resisting sagging and provides a more supportive sleep surface. Some memory foam mattresses are also infused with gel, which can add a little bit of extra weight. This gel-infused memory foam is designed to help regulate temperature and prevent you from sleeping hot, which can be an issue with some traditional memory foam.

Latex mattresses

Latex mattresses are known for their durability and responsiveness. Natural latex is one of the heaviest mattress materials out there. A latex mattress made from 100% natural latex will be a very heavy mattress. This is because latex is a very dense material. There are two main types of natural latex: Dunlop and Talalay. Dunlop latex is generally denser and heavier than Talalay latex.

Some manufacturers use synthetic latex or blended latex to reduce the cost and weight of the mattress. While these materials can still provide a comfortable sleep surface, they are not as durable as natural latex. If you're looking for a long-lasting and supportive mattress, a heavy mattress made from natural latex is an excellent choice. The latex comfort layers in a latex mattress or a hybrid mattress are also very resilient and can contribute to a mattress's durability.

Hybrid mattresses

Hybrid mattresses combine the support of an innerspring system with the comfort of foam or latex layers. The weight of a hybrid mattress will depend on the materials used in its construction. A hybrid mattress with a high coil count and thick layers of high-density foam or natural latex will be a heavier mattress. Hybrid construction allows for a good balance of support and comfort, but the weight can make them difficult to move.

How body weight and sleep position affect your choice

A good mattress should provide you with proper spinal alignment and pressure relief, regardless of your weight. Heavier sleepers, in particular, need a mattress that can support their body weight without sagging.

For heavier sleepers, a heavier mattress made from high-density materials is often the best choice. A mattress with a strong support core and dense comfort layers will provide the support and durability needed for a good night’s sleep. A medium-firm mattress is often a good choice for heavier sleepers, as it provides a good balance of support and comfort.

Your preferred sleeping position also plays a role in choosing the right mattress. Side sleepers often need a softer mattress that can contour to their curves and relieve pressure on their hips and shoulders. Stomach sleepers need a firmer mattress to prevent their hips from sinking too low, which can cause their spine to fall out of alignment. Back sleepers usually fall somewhere in the middle and do best with a medium-firm mattress.

What's a good mattress weight?

So, how much should a good mattress weigh? There’s no single answer to this question, as the average mattress weight can vary a lot depending on the mattress type, size, and materials. A twin mattress will naturally weigh less than a California king mattress. A simple foam mattress will be a light mattress compared to a thick latex mattress with multiple layers.

Here are some very general guidelines for the average mattress weight by type for a queen-size mattress:

• Innerspring mattress: 35-55 kg
• Memory foam mattress: 30-60 kg
• Latex mattress: 50-80 kg
• Hybrid mattress: 45-70 kg

Other factors affecting mattress durability

While a mattress's weight is a good indicator of its durability, it's not the only factor. To ensure your new mattress lasts for as long as possible, you should also consider the following:

• Edge support: Good edge support is important, especially if you tend to sit on the edge of your bed. A mattress with a reinforced perimeter will be more durable and prevent the edges from collapsing over time.
• Bed frame: The right bed frame is essential for supporting your mattress and preventing it from sagging. Make sure your bed frame is strong enough to support the combined weight of the mattress and the sleepers.
• Mattress protector: A mattress protector is a simple and effective way to protect your mattress from spills, stains, dust mites, and dead skin cells. This will help to keep your mattress clean and hygienic, and it can also extend its lifespan.