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How Long Do Memory Foam Mattresses Last

By: Christina Davies
Updated on: April 05, 2024

  • The lifespan of a memory foam mattress can vary depending on factors such as density, material quality, usage, and maintenance. High-density memory foam mattresses are generally more durable and can last up to 10 years or more with proper care.
  • The density, Indentation Load Deflection (ILD), and layer thickness of memory foam play a role in its durability and expected lifespan. Mattress warranties can indicate the manufacturer’s confidence in the product’s longevity.
  • Factors that affect mattress durability include the quality of materials, frequency of use, body weight, maintenance, and environmental conditions. A high-quality memory foam mattress can typically last 8 to 10 years, with some lasting longer.
  • Signs that your memory foam mattress may need replacement include sagging, lack of support, allergy or asthma symptoms, and persistent odors.

Are you wondering about the lifespan of your memory foam mattress? You’re not alone. As an investment in your sleep and overall well-being, it’s important to know how long it will last. This article will explore the longevity of the best memory foam mattresses around, providing you with the information you need to make an informed decision.

Memory foam mattresses have gained immense popularity for their ability to conform and support your body, ensuring a comfortable and restful sleep. But, like all mattresses, they do have a finite lifespan. The duration of its lifespan varies, influenced by factors such as the quality of materials employed, how often it is used, and the level of maintenance it receives.

Whether you’ve just purchased a memory foam mattress or you’re considering buying one, understanding its expected lifespan is essential. In this article, we will delve into the factors that affect the lifespan of memory foam mattresses, provide tips on how to extend its life and discuss when it may be time to replace it. So, let’s dive in and discover how long memory foam mattresses typically last, ensuring you get the most out of your investment in a good night’s sleep.

Understanding the Lifespan of Memory Foam Mattresses

Memory foam mattresses have become increasingly famous in recent years because of their capacity to conform to the body’s shape and alleviate pressure points. But how long do they actually last? The answer depends on various factors such as quality, usage, and maintenance.

One of the key factors that determine the lifespan of a memory foam mattress is its density. Memory foam mattresses come in various densities, ranging from low-density to high-density foam. Higher-density memory foam material is generally more durable and can last longer compared to lower density foam. A mattress with a density of 4-5 pounds per cubic foot is considered to be of high quality and can last up to 10 years or more with proper care.

Another important factor to consider is the quality of the materials used in the mattress. Premium memory foam mattresses are made with high-quality foam and are designed to withstand years of use. On the other hand, lower-quality mattresses may start to show indications of wear and tear within a few years.

How to Determine Mattress Durability and Lifespan

Durability is something that many customers look for when purchasing a mattress, and memory foam models are some of the most resilient available. Those of low quality may only last a few years before beginning to sag and not hold their shape, but high-quality versions can stand up to the test of time, with some lasting up to 20 years.

When considering the longevity of good memory foam mattress, the foremost factor is density. Other elements, such as foam indentation load deflection and layer thickness also play a role. Lastly, mattress warranties can be a useful tool to ensure your investment will endure.


Density is a measure of the concentration of objects in a given space. It is calculated by dividing the mass of the objects by the volume of the space they occupy.

Calculating the density of memory foam is a simple way to ascertain its durability and expected lifespan. Density is calculated in pounds per cubic foot (PCF) when it comes to memory foam.

  • A low density is less than 3.5 PCF
  • A medium density is between 3.5 and 5 PCF
  • A high density is above 5 PCF

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Memory foam with a low PCF tend to be the least durable, while those with a higher PCF have the most longevity. It’s not possible to gauge the density of a mattress simply by looking at a single layer. If there is a layer of low-density memory foam, the mattress as a whole will be less dense and have a shorter lifespan. Generally, a mattress made with higher-density memory foam is more durable. These high-density memory foams cost more, but they last longer and make up for the extra cost.

A few points to keep in mind when discussing high-density memory foam: 1) density is not the same as firmness. Dense foam can be quite supple, while a less dense foam might be hard, although it can be the other way around; 2) memory foam usually gets softer with age and use. Even so, high-density foams will stay in their original shape for longer than low-density foam, regardless of how much it has softened.

Deflection of Indentation Loads (ILD)

The Indentation Load Deflection (ILD) is a term used to describe the firmness of foam. It is also sometimes referred to as the Indentation Force Deflection (IFD). To measure the ILD, a standardized test is conducted, which involves compressing a 15 x 15 x 4-inch piece of foam to 25 percent of its original height using a 50-square-inch machine.

The ILD of foam can indicate its firmness or softness. A higher ILD suggests that it is firmer, while a low ILD indicates a softer foam. It should be noted that a high ILD foam can have either a high or low foam density. Likewise, a low ILD foam can also have either a high or low foam density. The ILD can be used to forecast the foam’s performance as well as its feel; thicker layers of foam usually have a higher ILD because it require more pressure to compress the foam to 25 percent of its original size.

The ILD of a mattress has more of an effect on its durability than the firmness does. It is best to pay attention to both the density and ILD of latex mattresses at each layer to understand both how the mattress feels and how it may hold up over time.

It is important to recognize the location of the foams with low or high ILD in correlation to their densities. If the low ILD foam is layered with a low density, the mattress can be more susceptible to a faster breakdown, ultimately diminishing the desired firmness. Nonetheless, if the comfort layer is thin and followed by multiple high-density layers, the mattress will likely maintain its durability.

The Thickness of the Layers

The support core is the most robust layer of a mattress; it provides the bed topper, structure and a great deal of sturdiness. But, a thicker mattress does not necessarily mean it is more long-lasting than a thinner one.

The firmness of each layer is essential to the comfort and durability of a mattress. Mattresses that have the same height and layer thickness may have different lifespans depending on the density of each layer. A thin, low-density top layer may not have as much of an impact on durability if thicker, high-density layers beneath back it up. In the end, it’s all about evaluating the entire mattress and how it will hold up against body weight over time.

Guarantee on Mattresses

A warranty on mattresses is provided to ensure customers have peace of mind when making a purchase. This warranty promises to repair or replace any mattress with a manufacturer’s defect. It is important to save the original invoice and proof of purchase to make a claim and receive the warranty benefits.

It is sensible for mattress makers to guarantee their items by their expected longevity. The normal mattress warranty is for 10 years, while those who give 15, 20, 25, and lifetime warranties are anticipating that their product will outlast the 10-year benchmark.

The warranty will provide details on the type of foundation and maintenance needed to keep the bed in good condition.

Factors That Affect the Durability of Memory Foam Mattresses

Apart from density and material quality, there are several other factors that impact the durability of a memory foam mattress. These include:

  • Quality of materials: The quality of the foam used in the mattress plays a significant role in its durability. Higher-density foams tend to be more durable and can withstand regular use for a longer period. Lower-density foams, on the other hand, may wear out faster and lose their supportive properties.
  • Frequency of use: The more often you use your mattress, the quicker it may deteriorate. Sleeping on your memory foam mattress nightly will result in more wear and tear when compared to one used less frequently, for instance, in a guest bedroom.
  • Body weight: Heavier individuals exert more pressure on the mattress, causing it to compress and potentially wear out faster. If you fall into this category, opting for a higher-density foam mattress may be beneficial as it can better withstand the increased weight.
  • Maintenance: Proper maintenance and care can significantly extend the lifespan of your memory foam mattress. Regularly rotating the mattress, using a mattress protector, and keeping it clean can help prevent premature wear and maintain its supportive properties.
  • Climate and environment: The environment in which the mattress is used can also impact its durability. Excessive humidity, heat, or exposure to direct sunlight can lead the foam to break down more quickly. It’s essential to keep your mattress in a well-ventilated room and avoid exposing it to extreme conditions.

Average Lifespan of Memory Foam Mattresses

Typically, a top-notch memory foam mattress can have a lifespan ranging from 8 to 10 years. However, this is just an estimate, and the actual mattress lifespan itself can vary depending on the factors mentioned earlier. Some memory foam mattresses from top-notch brands have been known to last even longer, up to 15 years or more.

It’s important to note that the lifespan of a memory foam mattress does not necessarily mean that it will be as supportive and comfortable as it was when it was new. Over time, the foam may start to lose its ability to bounce back and provide the same level of support. This can result in uncomfortable sleep and may be an indication that it’s time to replace the mattress.

Signs That Your Memory Foam Mattress Needs to be Replaced

Even with proper maintenance, there will come a time when your memory foam mattress needs to be replaced. Here are some signs that indicate it may be time for a new one:


If you notice significant sagging or unevenness in your mattress, it may no longer provide the necessary support for a good night’s sleep. Over time, the foam can start to lose its elasticity and shape, leading to uncomfortable sleeping positions and potential back or joint pain.

Lack of Support

As memory foam mattresses age, they may lose their ability to conform and support your body adequately. If you find yourself sinking too far into the mattress or waking up with aches and pains, it may be a sign that the memory foam mattress last you has worn out and is no longer providing the necessary support.

Allergies or Asthma Symptoms

Over time, memory foam mattresses can accumulate dust mites, allergens, and other microscopic irritants that can trigger allergies or asthma symptoms. If you experience increased allergy symptoms despite regular cleaning, it may be a sign that your memory foam mattress lasts or needs to be replaced.

Persistent Odor

While memory foam mattresses may have a slight odor when new, this should dissipate within a few days. If you notice a persistent, unpleasant smell even after several weeks, it could indicate that the memory foam bed itself has started to break down and needs to be replaced.

Tips to Extend the Lifespan of Your Memory Foam Mattress

polyurethane foam, innerspring mattresses How Long Do Memory Foam Mattresses Last

Although memory foam mattresses have a finite lifespan, there are several steps you can take to maximize their longevity:

Use a Mattress Protector

Investing in a good-quality mattress protector can help protect your memory foam mattress from stains, spills, dust, and allergens. This can significantly extend its lifespan and keep it in pristine condition for years to come.

Rotate the Mattress

Regularly rotating your mattress can help distribute the weight evenly and prevent excessive wear on one side of foam bed. Most memory foam mattresses can be rotated 180 degrees every 3 to 6 months for optimal longevity.

Avoid Jumping or Standing on the Mattress

Memory foam mattresses are not designed to withstand excessive weight or pressure. Avoid standing or jumping on the mattress, as this can cause the top gel memory foam part to compress and lose its shape.

Keep the Mattress Clean

Regularly cleaning your memory foam mattress can help remove dust, allergens, and stains that may accumulate over time. Follow the manufacturer’s instructions for cleaning and avoid using harsh chemicals or excessive moisture.

Proper Support

Ensure that your memory foam mattress is placed on a sturdy and supportive foundation. A used mattress cover and weak or worn-out foundation can cause the mattress to sag and lose its shape prematurely.

Memory Foam Mattress FAQs

How do you know whеn your mattrеss nееds rеplacing?

Thе surеst sign that you nееd a nеw mattrеss is whеn you’rе no longer gеtting a good night’s slееp on it. Maybе you’rе waking up with a sorе back or pеrhaps you fееl tirеd aftеr slееping for 8 to 9 hours. Your mattrеss is supposеd to hеlp you rеcovеr, so if you fееl worsе instеad of bеttеr whеn you wakе up, thеn thе bеd’s not working as it should. Another sign that your mattrеss is ready to bе rеplacеd is еxtеnsivе sagging.

Can a mattrеss last 20 years?

In thеory, a high-quality mattrеss could last 20 years, but that is unlikеly to happen. A mattrеss’s lifеspan depends on what matеrials it contains, how frеquеntly it’s usеd, and how wеll you takе carе of it. A mattrеss you usе еvеry day will probably not last 20 yеars, but quality mеmory foam and latеx mattrеssеs can providе a good night’s rеst for morе than a dеcadе.

What is thе bеst timе to buy a mattrеss?

Some of thе biggеr mattrеss salеs days include Nеw Yеar’s Day, Prеsidеnts Day, Mеmorial Day, thе Fourth of July, Labor Day, and of course Black Friday and Cybеr Monday. If you can’t wait for thе nеxt salеs day to rеplacе your mattrеss, try shopping onlinе rеtailеrs. Onlinе mattrеss companiеs usually sеll at lowеr pricеs bеcausе thеy havе fеwеr ovеrhеad costs to mееt and can pass thе savings onto thе customеr.

What should I look for whеn buying a mattrеss?

Mattrеss shoppеrs should considеr thе quality of thе bеd’s matеrials. Our еditors rеcommеnd looking for cеrtifications such as CеrtiPUR-US® or GREENGUARD Gold. You also want to think about what thе most comfortablе firmnеss for you is. Sidе slееpеrs nееd a softеr mattrеss, whilе back and stomach slееpеrs bеnеfit from a firmеr mattrеss.

How oftеn should you changе your bеd shееts?

According to thе National Institutе of Environmеntal Hеalth Sciеncеs, you should try to wash your shееts еvеry wееk. Changing your shееts this oftеn prеvеnts allеrgеns from building up. Pеoplе with sеvеrе allеrgiеs may еvеn bеnеfit from changing thеir shееts еvеry fеw days.

Conclusion – How Long Do Memory Foam Mattresses Last?

In conclusion, memory foam mattresses can last anywhere from 8 to 10 years or more, depending on various factors. By understanding the lifespan of memory foam mattresses and taking proper care of them, you can maximize their longevity and enjoy restful sleep for years to come.

Remember to consider the mattress’s construction, density, quality of materials, and usage when choosing a memory foam mattress. Implementing maintenance practices such as using a mattress protector, rotating the mattress, and keeping it clean can help extend its lifespan.

So, if you’re in the market for a new mattress, make an informed decision and invest in a high-quality memory foam mattress. Your sleep quality and your overall health will greatly appreciate this decision!


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