What is an Open Coil Mattress?

Choosing the right mattress can sometimes feel overwhelming, especially with many different types on the market. Whether you're shopping for your main bedroom, a guest room, or a mattress for a growing child, it's essential to understand what each option offers. The open coil mattress is a more traditional and widely available type. But what exactly is an open coil mattress, and is it the right choice for you?

In this blog, we'll break down everything you need to know about open-coil mattresses in a way that's easy to understand. We'll explore what makes them unique, how they’re constructed, and what benefits they bring. By the end of this read, you’ll have a clear picture of whether an open coil mattress could be the perfect fit for your needs. So, let’s dive in and unravel the mystery of the open coil mattress together!

What is an Open Coil Mattress?

An open coil mattress, or a Bonnell spring mattress, is one of the most traditional and widely used mattresses. It consists of a network of interconnected metal springs or coils that provide support and distribute weight evenly across the mattress. The design is relatively simple, so open coil mattresses are often more affordable than other types.

The construction of an open coil mattress involves a series of hourglass-shaped springs joined together using a wireframe. This network of coils forms the mattress's core, providing its essential support structure. Padding and fabric surround the coils, adding comfort and a smooth sleeping surface.

Open coil mattresses have been around for decades, and their durability and cost-effectiveness make them a popular choice for many households. They are particularly favoured in guest rooms and children's bedrooms and are an entry-level option for those on a budget.

Core Components of an Open Coil Mattress

1. Springs:

The springs in an open coil mattress are the key to its support system. These springs are shaped like an hourglass, typically made from steel, with a broader top, bottom, and narrower middle. This shape allows the springs to compress and expand, supporting and accommodating movement.

Each spring is connected to its neighbours by a network of wires. This interconnected design ensures that when pressure is applied to one part of the mattress, the force is distributed across the springs, helping to maintain an even surface. However, this also means that open coil mattresses can be more prone to "roll-together" issues, where movement on one side of the bed can be felt on the other.

2. Outer Layers:

While the springs form the mattress's core, the outer layers are crucial in comfort. These layers typically consist of padding materials like foam, polyester, or natural fibres like cotton or wool. The padding provides a cushioning layer between the sleeper and the springs, making the mattress more comfortable.

The outermost layer is the mattress cover, usually made from cotton, polyester, or a blend of both. The cover not only protects the inner components of the mattress but also contributes to its overall feel and appearance. Some covers may feature quilted patterns or additional layers of padding for extra comfort.

How Open Coil Systems Work?

The working principle of an open coil system is relatively straightforward. Your body weight compresses the springs when you lie down on the mattress. The interconnected design of the coils allows them to work together to distribute your weight evenly across the mattress. This distribution helps to reduce pressure points, providing a balanced level of support.

However, the interconnected nature of the coils also means that motion can transfer across the mattress. If you sleep with a partner, you might feel their movements more on an open coil mattress than on pocket-sprung or memory foam mattresses, where individual springs or foam cells absorb movement independently.

The firmness of an open coil mattress can vary depending on the thickness of the coils and the materials used in the padding layers. Thicker coils typically provide firmer support, while thinner coils offer a softer feel. The number of coils in the mattress can also affect its firmness and overall support, with more coils generally providing better weight distribution and comfort.

Types of Open Coil Mattresses

Not all open-coil mattresses are the same. Variations in design and construction cater to different preferences and needs. Here are the two main types of open-coil mattresses:

Standard Open Coil Mattresses

The standard open coil mattress is the most common type, featuring traditional hourglass-shaped springs connected by wires. These mattresses are available in various firmness levels and are suitable for a wide range of sleepers. The simplicity of the design makes standard open coil mattresses an affordable option for those looking for essential comfort and support.

Continuous Coil Mattresses

A variation of the traditional open coil design, continuous coil mattresses use a single piece of wire to form a continuous coil system. Instead of individual springs, the wire is shaped into a series of interconnected coils that run from the head to the foot of the mattress. This design provides more consistent support and reduces the risk of motion transfer across the mattress. Continuous coil mattresses are more durable than standard open coil mattresses, making them a good option for those seeking long-term use.

Open Coil vs Pocket Sprung Mattresses

One of the most significant differences between open coil mattresses and pocket-sprung mattresses is how the springs are constructed and arranged. In a pocket-sprung mattress, each spring is encased in its fabric pocket, allowing it to move independently. This design offers several advantages over the open coil system.

Pocket-sprung mattresses typically provide better support and comfort than open-coil mattresses. Because the springs move independently, they can contour more closely to the body, providing targeted support where it’s needed most. This can be particularly beneficial for individuals with specific pressure points, such as the hips or shoulders, as the mattress can offer more precise relief.

Another critical advantage of pocket-sprung mattresses is their ability to minimise motion transfer. Since the springs are not interconnected, movement on one side of the bed is less likely to disturb a partner on the other side. This makes pocket-sprung mattresses popular for couples, particularly those with different sleeping patterns.

However, pocket-sprung mattresses tend to be more expensive than open-coil mattresses. The increased design complexity and the higher-quality materials often result in a higher price point. For those on a tight budget, an open coil mattress may be a more affordable option, though it may offer a different level of comfort or durability than a pocket-sprung mattress.

Open Coil vs Memory Foam Mattresses

Memory foam mattresses have gained popularity in recent years due to their ability to conform to the body's shape, providing personalised support. Unlike open coil mattresses, which rely on springs for support, memory foam mattresses use layers of foam that respond to heat and pressure. This allows the foam to mould around your body, offering a "hugging" sensation that many people find comfortable.

One of the main advantages of memory foam mattresses is their ability to isolate motion. Because the foam absorbs movement, you're less likely to be disturbed by a partner's movements during the night. This makes memory foam mattresses a good option for couples or light sleepers.

However, memory foam mattresses can retain heat, making them less suitable for those who tend to sleep hot. Additionally, some people find the sinking sensation of memory foam uncomfortable, mainly if they prefer a firmer sleeping surface. With their spring-based support system, open coil mattresses offer a more traditional feel and are generally more relaxed to sleep on.

Open Coil vs Hybrid Mattresses

Hybrid mattresses combine elements of both spring and foam mattresses, offering a blend of support and comfort. Typically, a hybrid mattress features a base layer of pocket springs topped with memory foam or latex layers. This combination supports a spring mattress with the contouring comfort of foam.

The primary difference between hybrid mattresses and open coil mattresses is the level of support and comfort. Hybrid mattresses are designed to offer the best of both worlds, providing a balanced feel that appeals to a wide range of sleepers. They are more expensive than open coil mattresses but offer enhanced comfort and durability.

If you're looking for a mattress that offers a combination of support and pressure relief, a hybrid mattress might be the better choice. However, if affordability is your main concern, an open coil mattress offers a cost-effective alternative that still provides adequate support.

Benefits of Open Coil Mattresses

Open coil mattresses have several advantages, making them popular for many consumers. Here are some of the key benefits:

Affordability

One of the most significant selling points of open coil mattresses is their affordability. The simple construction and materials used in these mattresses make them less expensive to produce, resulting in lower consumer prices. This makes open coil mattresses an excellent option for those on a budget or who need to furnish a guest room or child's bedroom.

Variety of Firmness Levels

Open coil mattresses are available in various firmness levels, from soft to extra firm. This variety allows you to choose a mattress that suits your personal comfort preferences. Whether you prefer a smoother, cushioned feel or a firmer, more supportive surface, an open coil mattress will likely meet your needs.

Availability

Open coil mattresses are widely available in most mattress stores and online retailers. Their popularity means you have many brands, models, and price points. This availability makes it easy to find an open coil mattress that fits your budget and comfort preferences.

How to Choose the Right Open Coil Mattress?

Choosing the right open coil mattress involves considering several factors, including your comfort preferences, sleeping position, and budget. Here are some tips to help you make the right choice:

Consider Your Sleeping Position

Your preferred sleeping position can influence the type of mattress that's best for you. If you sleep on your back, choose a firmer mattress that provides adequate support for your spine. Side sleepers often benefit from a softer mattress that cushions the shoulders and hips. Stomach sleepers may need a medium-firm mattress to prevent their hips from sinking too far into the bed.

Determine Your Desired Firmness Level

Firmness is a critical factor in mattress comfort. Open coil mattresses are available in various firmness levels, so consider your preferences when choosing a mattress. If you're unsure, visiting a mattress store and testing different firmness levels can help you determine what feels most comfortable.

Consider the Mattress Thickness

The thickness of the mattress can also affect comfort. Thicker mattresses often provide more cushioning and support, while thinner mattresses may feel firmer. When choosing an open coil mattress, consider the thickness of the coils and the padding layers.

Check the Coil Count

The coil count refers to the number of springs in the mattress. A higher coil count generally means better support and durability. However, coil count is one of many factors to consider; the thickness of the coils and the quality of the materials used are also necessary.

Think About Durability

Open coil mattresses are generally durable, but the quality of materials and construction can vary. Look for a mattress with a sturdy frame and high-quality coils to ensure it lasts several years.

Set a Budget

Open coil mattresses are known for their affordability, but prices can still vary. Set a budget before you start shopping, and stick to it. Consider the long-term value of the mattress; a slightly more expensive mattress might offer better durability and comfort, saving you money in the long run.

How Often Should You Replace Your Open Coil Mattress?

Like all mattresses, open-coil mattresses have a lifespan and will eventually need to be replaced. An open-coil mattress should be replaced every 7 to 10 years. However, the exact lifespan can vary depending on the quality of the mattress, how often it's used, and how well it's maintained.

Visible sagging, lumps, or indentations in the mattress surface are signs that it might be time to replace your open coil mattress. If you start waking up with aches and pains or find that you’re not sleeping as well as you used to, it could be a sign that your mattress is no longer providing the support you need.

Precisely…

An open coil mattress is a time-tested, affordable option that offers reliable support and comfort. While it may not have all the bells and whistles of more expensive mattresses, it provides a good night's sleep at a fraction of the cost. Whether you’re furnishing a guest room or a child's bedroom or simply looking for a budget-friendly mattress, an open coil mattress is worth considering.

FAQs

What is the Lifespan of an Open Coil Mattress?

The lifespan of an open coil mattress typically ranges from 7 to 10 years. However, this can vary depending on the quality of the mattress and how well it's cared for. Regularly rotating the mattress and using a mattress protector can help extend its lifespan.

Can Open Coil Mattresses Cause Back Pain?

Open coil mattresses can provide adequate support, but there may be better choices for some, especially those with specific back problems. If the mattress is too soft or firm for your body, it could contribute to discomfort or back pain. Choosing a mattress with the right firmness level is essential for your needs.

Are Open Coil Mattresses Suitable for Children?

Yes, open-coil mattresses can be a suitable choice for children. They offer good support and are available in a range of firmness levels. Additionally, their affordability makes them a practical option for growing children who may need a different mattress as they age.

How Often Should I Rotate My Open Coil Mattress?

You should rotate your open coil mattress every 3 to 6 months. Rotating the mattress helps distribute wear evenly and prevent sagging. Some mattresses can be flipped, but this depends on the design, so check the manufacturer's instructions.