Can I Fix a Sagging Mattress? How to Avoid Mattress Sagging

By Geoff McKinnen Certified Sleep Coach

Last Updated On January 16th, 2024
Can I Fix a Sagging Mattress? How to Avoid Mattress Sagging

Having a good night’s sleep is really important for our overall well-being. But when our mattress starts to sag, it can seriously affect the quality of our rest. Over time, mattresses can develop sagging or dents, which make us feel uncomfortable and disturb our sleep.

But the good news is you don’t always have to buy a new mattress when this happens quickly. In this article, we’ll explore if it’s possible to fix a sagging mattress and give you some useful tips to prevent it from sagging in the first place.

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Why is My Mattress Sagging?

There are several reasons why your mattress might be sagging. Over time, mattresses naturally wear out and lose their shape due to age and use. The materials inside the mattress can break down, leading to sagging.

Additionally, a sagging mattress can result from poor-quality materials or construction. If the mattress was made with low-quality components, it will likely sag earlier. Inadequate support from the bed frame or mattress foundation can also cause the mattress to sag. It is important to identify the underlying cause of the sagging to determine the best solution and mattress support to address the issue.

What Causes a Mattress to Sag?

A good night’s sleep is essential for our overall well-being, and mattress quality plays a significant role in achieving that. However, a mattress can start to sag over time, causing discomfort and disrupting our sleep. It’s important to understand the causes of mattress sagging to take appropriate measures to prevent or address the issue. Let’s explore the different reasons why a mattress sags over time.

Wear and Tear

Over time, mattresses experience wear and tear from regular use. The materials inside, such as foam or springs, can start to deteriorate and lose their original shape. Continuous pressure from sleeping on the mattress can lead to sagging over time. This is especially true if you go for a mattress that’s thinner than the right mattress thickness for your needs.

Poor Quality Materials

Sometimes, a mattress is made with low-quality materials that are not durable enough to withstand regular use, such as cheap, thin foam mattresses. These materials may break down more quickly, causing the mattress to sag sooner than expected.

Lack of Proper Support

The support system underneath the mattress, such as the frame or bed foundation, plays a crucial role in maintaining the mattress’s shape and preventing sagging. If the mattress support system is inadequate or worn out, it can contribute to sagging.

Body Weight and Pressure Points

The weight of our bodies, along with our sleeping positions, can put extra pressure on certain areas of the mattress. Over time, this repeated pressure can cause those areas to sag and create mattress indentation, especially in spots where we often sleep, like the hips and shoulders.

Moisture and Liquid Damage

Exposure to moisture or liquid spills can weaken the materials of the mattress, leading to sagging. This can occur if the mattress gets wet or if liquids seep into the layers, compromising their integrity. In extreme cases, flooding from a burst pipe or natural disaster can leave you with a water damaged mattress.

Does a Sagging Mattress Cause Problems?

Yes, a sagging mattress can cause problems. When a mattress sags, it lacks the necessary support for comfortable sleep, leading to reduced sleep duration and lower sleep quality. This is concerning as many working adults already get inadequate sleep Verified Source Centers for Disease Control and Prevention (CDC) The United States’ health protection agency that defends against dangers to health and safety. View source a problem associated with various health issues like memory problems, mood instability, weakened immunity, high blood pressure, mental fog, weight gain, and increased risk of heart disease and diabetes.

Sleep deprivation is a serious matter, and a sagging mattress can worsen the challenges of achieving restful sleep. Therefore, it’s important to address and fix a sagging mattress for better sleep and overall well-being.

Tips on How to Avoid Sagging

Maintaining the quality and longevity of your mattress is essential for a comfortable and supportive sleep surface. By following a few simple tips, you can help prevent your mattress from sagging over time. Let’s explore the best practices to avoid mattress sagging and ensure that you enjoy a restful and rejuvenating sleep experience.

Rotate Your Mattress Regularly

Regularly rotating the mattress can help prevent sagging by distributing the weight and pressure more evenly across the mattress surface. By rotating the mattress, you change the areas that bear the weight of your body, reducing the likelihood of excessive compression and indentations in specific areas. This helps to maintain the integrity and support of the mattress over time.

Rotating the mattress allows for more even wear and tear, preventing the formation of permanent body impressions and sagging in specific areas. We recommend rotating the mattress every 3 to 6 months, or as advised by the manufacturer, to ensure more balanced usage and prolong the lifespan of the mattress.

Use a Supportive Bed Frame

Use a supportive bed frame that evenly distributes weight and provides adequate support. Avoid placing the mattress directly on the floor or using a weak or damaged frame. Make sure the frame is the right size for your mattress to prevent shifting or bending. Regularly inspect the bed frame for wear or damage and promptly repair or replace any compromised parts.

By using a sturdy and properly fitted bed frame, you can help maintain the structural integrity and support of your mattress, preventing sagging over time.

Avoid Excessive Weight and Pressure

Avoid putting excessive weight and pressure on it, such as jumping or standing on the mattress. Refrain from sitting up in bed or on the edges for extended periods as well, as it can weaken the support. If you do want a mattress for sitting in bed, invest in a mattress with good support features, like a strong core or memory foam, to maintain its shape and provide proper support.

Consider a Mattress Protector

Consider using a mattress protector to shield your mattress from spills, stains, dust, sweat, and body oils. It helps maintain the mattress’s quality, preventing premature sagging caused by these factors. By adding a mattress protector, you create an extra layer of defense that preserves the integrity of the mattress, extending its lifespan and ensuring long-lasting comfort.

Replace When Necessary

Replace your mattress when necessary to prevent sagging and ensure proper support. If you observe significant sagging, or lumps, or feel springs poking through, it’s a clear indication that it’s time for a new mattress. While a general guideline suggests replacing your mattress every 7 to 10 years, individual factors such as mattress type, usage, and condition should also be considered.

Investing in a new mattress when needed guarantees a supportive and comfortable sleep surface, avoiding the discomfort and issues associated with sagging mattresses. And just to be thorough, we have to say we don’t recommend putting a new mattress on top of an older sagging mattress.

Placing a mattress on top of a mattress can compromise the support and comfort of the new mattress. The underlying sagging mattress may not provide a stable and even surface for the new mattress, leading to improper weight distribution and potential accelerated wear and tear. It’s best to address the sagging issue by replacing or repairing the old mattress before introducing a new one for optimal sleep quality and mattress longevity.

Saving a Saggy Mattress

Mattress sag can be a frustrating issue that affects the overall comfort and quality of your sleep. However, there are a couple of  “life hacks” that can help alleviate this problem and restore a more even surface to your mattress.

Try Mattress Toppers

One effective way to address sagging is by using a mattress topper. A mattress topper is an additional layer of cushioning that sits on top of your existing mattress. By choosing a high-quality topper with appropriate thickness and density, you can create a more supportive and even surface.

The topper can help distribute your body weight more evenly, reducing the pressure on specific areas of the mattress that may be sagging. This can provide temporary relief and improve the overall comfort of your sleep. However, it’s important to reflect if it’s wiser to purchase a mattress topper or a new mattress.

Place Pillows Strategically

Another “hack” to fix sagging involves strategically placing extra pillows in areas where the mattress has dipped or lost its support. By arranging pillows under the sagging areas, you can help fill the gaps and create a smoother surface.

This can be especially helpful for localized sagging or dips, such as in the middle of the mattress or near the edges. Experiment with different pillow placements to find the most comfortable and supportive configuration for your specific sagging issues.

Is it Time to Replace Your Mattress?

Mattresses wear out over time and need to be tossed eventually. If you see that your mattress is sagging, has lumps, or is not flat when you get up, it means it’s time to replace the mattress. These problems can cause discomfort, disturb your sleep, and even give you back pain.

And If you feel tired and achy when you wake up, it’s another sign that you need a new mattress because old mattresses have health concerns. They don’t give enough support and make it hard to sleep well. If you can feel the springs poking through, it’s definitely time to go mattress shopping because your current option is not only uncomfortable but could be unsafe.

So If you often wake up with aches or your mattress looks worn out, buying a new one and disposing of your old mattress is a good idea.

Benefit Mattress Edge Support

As you shop, you may want to consider a mattress with edge support. A mattress with strong edge support is designed to maintain its shape and prevent excessive compression around the sides.

By reinforcing the perimeter, mattress edge support helps distribute weight more evenly and reduces the likelihood of sagging over time. It provides stability and prevents the edges from sinking when sitting or sleeping near the sides of the bed.

Types of Mattresses

A sag-free mattress keeps its shape and stops uneven surfaces or dips from forming, which can cause body aches and disturb your sleep. Choosing a sag-free mattress lets you have a peaceful and refreshing sleep every night. Now, let’s explore some of the types of mattresses for you to consider.

Memory Foam Mattresses

For a mattress that won’t sag, memory foam mattresses are a great choice. They have dense layers of polyurethane foam that give excellent support and relieve joint pain. Memory foam mattresses are also perfect for light sleepers and couples who want uninterrupted rest because they isolate motion. If you want extra comfort and temperature control, you can get a memory foam mattress with cooling features like gel or plant-based foam.

Latex Mattresses

Consider latex as a durable and eco-friendly option for a sag-free mattress. Latex mattresses, made from different types of latex, provide responsive support and a slight hugging feeling without fully contouring to your body. They also have cooling properties, allowing airflow and dissipating body heat. While latex mattresses offer many benefits, explore other options to find the perfect fit for your needs and ensure a restful night’s sleep.

Innerspring Mattresses

In the search for a sag-free mattress, consider the classic option of an innerspring mattress. These mattresses are known for their breathability and excellent edge support, preventing you from rolling off the bed. While they offer affordability, it’s important to note that innerspring mattresses may require a box spring for optimal functionality. Light sleepers or those with specific joint support needs may find alternative mattress options more suitable.

Hybrid Mattresses

Hybrid mattresses are a top choice when it comes to finding a sag-free mattress. These mattresses combine the features of traditional spring beds and memory foam, providing a comfort layer made of latex foam or viscoelastic foam. Supported by a coil base, hybrids offer even weight distribution, support, and body-hugging comfort, with the added benefit of edge support.

Air Mattresses

Air mattresses, also known as inflatable mattresses or airbeds, provide a sleeping surface by inflating one or multiple air chambers. While designed to maintain shape and firmness, they can still sag over time due to factors like slow air leaks and loss of elasticity in the materials.

Concentrated or excessive weight on specific areas and an uneven or weak support surface can contribute to an air mattress sagging. To prevent this, follow manufacturer instructions for inflation and maintenance, regularly inspect for leaks, and use a supportive and even surface.

Waterbed Mattresses

Waterbed mattresses are known for being sag-free due to their unique design. These mattresses are filled with water, which evenly distributes the body weight and provides constant support. The water inside the mattress conforms to the body’s contours, eliminating pressure points and preventing sagging. With their stable and resilient nature, waterbed mattresses offer a reliable and comfortable sleep surface that remains sag-free over time.


What causes a mattress to sag?

A mattress can sag due to various factors, such as age, worn-out materials, and improper use. Over time, the materials inside the mattress may lose their resilience, leading to sagging. Additionally, placing excessive weight on the mattress, such as leaving objects on it during the day, or not properly supporting it can contribute to sagging over time.

How do you fix a sagging mattress?

To fix a saggy mattress, you can try a few methods. One option is to rotate the mattress regularly to distribute the wear evenly. Another option is to add a supportive mattress topper or insert a piece of plywood under the mattress for added support. If the sagging is severe, it may be necessary to replace the mattress altogether for a more comfortable and supportive sleep surface.

Is it bad to sleep on a sagging mattress?

Sleeping on a sagging mattress can be uncomfortable and may lead to various issues. It can cause back pain and body aches due to improper support, affecting the quality of your sleep. Over time, it can also lead to poor spinal alignment and disrupt your overall well-being.

Can you fix a mattress that sinks in the middle?

Yes, you can fix a mattress that sinks in the middle. One option is to use a mattress topper or pad to provide extra support and even out the surface. Another solution is to rotate or flip the mattress regularly to distribute the weight evenly and reduce sagging in the middle. If these methods don’t work, it may be necessary to consider replacing the mattress.

How do I know if my mattress is sinking?

You can tell if your mattress is sinking by checking for noticeable indentations or unevenness in the sleeping surface. When lying on the mattress, if you feel like you’re sinking or unsupported in certain areas, it’s a sign of sagging. Another indicator is if you experience discomfort or body aches after sleeping on the mattress.

Can sleeping position affect how mattresses sag?

Yes, the sleeping position can impact how a mattress sags over time. Different sleeping positions distribute weight differently on the mattress, which can lead to varying degrees of sagging.

Back sleepers generally distribute weight more evenly, reducing the likelihood of sagging in specific areas. Side sleepers concentrate pressure on their hips and shoulders, increasing the risk of sagging in those regions. Stomach sleepers put the most pressure on the middle of the mattress, potentially causing sagging in the middle over time.

While mattress sagging is natural, selecting a mattress firmness and type suitable for your sleeping position can help minimize excessive sagging and prolong its lifespan.


While fixing a sagging mattress may be possible through certain techniques, it’s essential to understand that prevention is always better than cure. Particularly as it’s troublesome to measure mattress sag for a warranty.

Regularly rotating and flipping your mattress, using a supportive bed frame, and investing in a high-quality mattress protector can significantly prolong its lifespan and maintain its shape, which may be covered under the mattress warranty.

Choosing a mattress with durable materials and proper support tailored to your needs can help prevent sagging in the first place. By following these tips and taking proactive measures, you can enjoy a comfortable and supportive mattress for years to come, ensuring restful nights and improved overall well-being.

About the author

Geoff McKinnen is a writer focusing mainly on the healthcare industry and has written articles on everything from foods to help you lose weight to the connection between Alzheimer’s and sleep. Geoff’s passionate about helping readers improve their well-being to lead happier lives. Outside of work, Geoff enjoys cycling and hiking and believes that by leading a healthy lifestyle, he can help others do the same.

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