How Long Do Foam Mattresses Last? (& Make It Last Longer)

Memory foam has come a long way since its first use at NASA in 1966. Today, it’s used in just about anything made for comfort.

It’s a popular choice for mattresses because it offers a soft and squishy surface to rest your body upon. They’re much different than an innerspring or foam mattress in terms of longevity and comfort.

Unfortunately, all good things must come to an end, which leaves us wondering how long a memory foam mattress actually lasts. 

Memory foam mattresses have a lifetime of around 8-10 years depending on how well they’re maintained. 

The durability and longevity of a memory foam mattress greatly depend on the density, firmness, and thickness of its foam layers.

Some aren’t made as well as others and may deteriorate quicker.

If you’re thinking of purchasing a memory foam mattress or have one and just want to know how to keep it around longer, we’ve got a bit of helpful information for you. 

How Long Do Memory Foam Mattresses Last?

As mentioned earlier, memory foam mattresses have a lifespan of roughly 8-10 years, give or take.

All memory foam mattresses are different in terms of comfort, material, and layers. 

One of the most notable factors that will impact your memory foam mattress is body weight, and there are a few things you should be sure to factor in as you shop to ensure you find a product that will be most suitable for you. 


For starters, check the density. Density is measured in pounds per cubic foot and is a good indication of durability.

Low-density is <3.5 PCF, medium is 3.5 to 5 PCF, and high-density is anything over >5 PCF. 

A quality product will typically feature a density of around 3.5 to 4 lbs./ft³. If you find a product that’s notably less expensive than others, there’s a good chance it falls below this standard and will therefore be less durable.

If you heavyset, however, we wouldn’t settle for anything less than 5 lbs./ft³. 

A mattress with low PCF will break down the quickest and higher PCF foams will offer the best durability.

It’s important to note that density doesn’t equal firmness. Dense foam can be quite soft while less dense foam may be more firm. 

You also want to examine the thickness of the memory foam layer as you analyze the density.

If you find a product with a memory foam layer any more than one inch thick, we would strongly advise that you consider other options if it is less than 3.5 lb/ft³ dense. 

Indentation Load Deflection

The Indentation Load Deflection (ILD) is an indicator of the memory foam’s firmness. A higher ILD indicates a more firm mattress whereas a low ILD indicates a softer foam.

ILD doesn’t directly affect how long the mattress will last, but it may give you an idea of how each layer of foam will handle the wear and tear over time.

A low density, low ILD foam layer could mean the mattress will break down and lose its firmness level quicker.

On the other hand, if there’s a thin comfort layer on top of several thick, high-density layers, the durability may not be affected as much. 

How Long Do Cheap Memory Foam Mattresses Last

Most memory foam mattresses, whether cheap or expensive, will last around 8-10 years or longer, but cheap memory foam toppers only have a lifespan of 3-5 years.

It all depends on how well you maintain them.

Memory foam mattress8-10+ years
Memory foam topper3-5 years

Do Memory Foam Mattresses Last Longer Than Innerspring?

Memory foam mattresses are more durable than spring mattresses and last longer if well maintained.

The difference between the two is the material. Memory foam mattresses don’t allow dirt and body oils to build up in them as quickly as innerspring does.

Additionally, this means dust mites won’t accumulate in a memory foam mattress as quickly as they would in a spring mattress.

The coils in innerspring mattresses tend to deteriorate quickly and they will eventually stick up through the comfort later.

Not only that, but the springs can sink, causing indents much like memory foam. This can force people to sleep in strange positions to try to get comfortable.

On average, a spring mattress only lasts around 5-years but can last longer if well maintained.

Memory foam has a longer lifespan of 8-10 years. We know individuals who have had their innerspring mattress for over 5 years and it’s still as comfortable as the day they purchased it.

As we’ve said, it greatly depends on how well you take care of it.

How To Make Your Memory Foam Mattress Last Longer

If you’re purchased a pricey memory foam mattress and want to preserve its longevity, here are some ways you can do so. 

1.Mattress Protector

You can’t slap any mattress protector on your memory foam mattress and call it a day. You have to look for one that’s reliable and protective.

Mattress Protector

You want it to keep out the allergens, moisture, dirt, and dander. Essentially anything that’s going to harm and degrade your mattress quicker than normal.

The issue with memory foam is that it’s easy to ruin if it’s not protected, even if you put a sheet on it.

Here’s what you should consider when looking for the perfect mattress protector to increase your memory foam mattress lifespan. 


Memory foam is similar to a sponge. As soon as you spill something on it, you can take off a couple of years from its lifespan.

The foam will soak up the liquid and can even cause mold to form inside of it. This is especially true if there’s not enough breathability between the top and bottom of the mattress. 

A waterproof mattress protector will protect the memory foam from water, pet or human urine, spills, perspiration, and other bodily fluids.

In addition to that, a dense waterproof mattress protector with a liner that’s breathable is ideal for blocking moisture from penetrating the mattress. 

Keep Bugs Out

Protect your memory foam from critters at all costs. Bed bugs and dust mites can penetrate your memory foam if there’s not a protector on it.

Zippered mattress protectors and encasements are the best way to protect your memory foam mattress from invasions.

A dense protector, such as polyester or polypropylene will stop the buds and dust mites from being able to bite through it.

Dust mites can also stir allergies, and asthma, and exacerbate existing conditions. 

Protectors that offer dust mite protection can increase the longevity of your memory foam mattress.

If they can’t penetrate the mattress, you won’t have to throw it away due to your allergies. 

2. Get A Proper Foundation

A proper bed foundation is the key to preserving the longevity of your memory foam mattress.

A slatted or solid mattress foundation is the best for memory foam. If you go with a slatted foundation, the slats should be no further apart than 2.75 inches apart.

If they get any further apart, you’ll need to purchase extra ones. 

Not only that, but the memory foam may even begin to sage between the slats if they’re too far apart.

We suggest a flat foundation to avoid any type of sagging. 

3. Rotate It

Did you know that you’re supposed to rotate your mattress once per season?

Rotating your memory foam mattress 180 degrees each season will ease the distress that sleeping in the same spot can cause.

It can cause more wear and tear on the mattress as well. If you’re lucky enough to own a memory foam mattress that doesn’t need to be flipped, then you can skip this.

If you’re in the market for a new mattress, we suggest a premium brand that doesn’t require flipping. 

4. Use Your Vacuum

If you vacuum your mattress at least twice per year, it can prevent sweat, dust mites, and allergens from settling into it.

Vacuuming Mattress

To do this, sprinkle your mattress with baking soda and leave it to sit. The longer the better. You can also add a drop or two of essential oil to make it smell nice.

After you let both of those sit for a while, use the upholstery attachment on your vacuum and suck up the baking soda, paying special attention to the seams, tufts, and between the mattress and foundation. 

5. Don’t Immediately Make Your Bed

We know it goes against everything you’ve been taught regarding beds, but it’s recommended that you don’t make your bed as soon as you get up.

Holding off on this allows your mattress and bedding to breathe. It will allow any moisture created throughout the night to evaporate.

If it doesn’t evaporate, the moisture can invade the mattress and break it down quicker.

6. Wash Bedding Regularly

If your bedding is dirty, so is your mattress. If you regularly wash the sheets, blankets, and mattress protectors, you can keep your mattress fresh and preserved.

Not to mention, there’s nothing better than getting into a freshly cleaned bed with fluffy and soft linens. Are we right?

Signs Your Memory Foam Mattress Needs Replacing

As much as you may love your memory foam mattress, all good things must come to an end.

Here are some sure signs that it’s time for your memory foam mattress to be replaced. 

1. Sagging

Do you feel like you’re sleeping in a hole? Have you noticed a crater in your bed?  If so, it’s time to ditch the mattress.

The sagging isn’t going to go away no matter what you do. You may be able to prevent it by rotating it, but otherwise, it’s trash now.

The dipping of your mattress means it can no longer provide you with the support and pressure relief that you need, which can result in neck, shoulder, back, or hip pain. 

2. It’s Over Expired

We said that memory foam mattresses last 8-10 years, so if you’re over the 10-year mark and begin to notice it’s feeling differently, it’s time for a new one.

After 10 years of wear and tear, sweat, oils, skin cells, dirt, dust mites, pets, and other things, it’s time to set your memory mattress free. 

3. Allergy & Asthma Flare-Ups

Are you noticing more and more allergy and asthma flare-ups? If so, it may be because your memory foam mattress has accumulated a lot of dust and dander.

This can have a direct impact on your health and you could even wake up every morning with the sniffles.

If this has been happening to you, it’s time to ditch the mattress and replace it with something less infested and dusty. 

How Long Do Memory Foam Toppers Last?

High-quality memory foam toppers last 3 to 5 years on average. Memory foam toppers aren’t quite the same as memory foam mattresses since they’re smaller and don’t have a lot of supporting layers.

Cheap memory foam toppers that you can get from Walmart or Target for less than $50 aren’t going to last more than 2 years if you’re lucky. 

The longevity of a memory foam topper depends on how much weight is being put on it, how often it’s used, the thickness of the topper, the condition of your main mattress, and how well the topper is taken care of.

The general rule of thumb is the thicker the topper, the longer it will last.

We Thought You Would Like

Price Range of Memory Foam Mattress

Whether you’re purchasing a memory foam mattress for the first time or replacing an old one, it’s important to get a good idea of what a memory foam mattress could cost you. 

You can find a memory foam mattress for as long as $150 and as high as $2,000 and up. The models that are between $150-and $700 won’t be as dense as other models, so they’re not going to last as long as high-density models. These mattresses may not even make it to 6 years before they begin to sag or have indentations. 

Models that are between $700-and $1,200 are considered mid-range. These mattresses have higher density foams, equaling better durability.

These models may come with extra cooling layers composed of gel, copper, or graphite for enhanced breathability. 

At the higher end of the spectrum are the $1,200-$2,000+ mattresses.

These models generally have more layers with various firmness and densities that can greatly impact the life of the mattress. 


Keeping your memory foam mattress in tip-top shape isn’t a difficult task to accomplish.

Mattress protectors and encasements will play a large role in how long your memory foam mattress will last.

If you’re purchasing a new memory foam mattress, we suggest one that’s breathable, moisture-wicking, and high-density.

These three features combined can increase the longevity of your memory foam mattress. 

Leave a Comment