How Long Do Foam Memory Mattresses Last?

Buying a mattress is always important decision for any household as normally a mattress is a durable item and people expect their mattresses to last at least a few years.

Life of a (memory foam) mattress varies widely. It’s common to come across mattresses lasting anywhere from 2 to 20 years. Although, a 5-10-year lifetime is normally what’s to be expected by any new buyer.

Durability and longevity of a memory foam mattress depends on several factors which we will discuss in this article, these are:

  • Foam density
  • Core & support base
  • Mattress cover
  • Routine maintenance

How Long Do Foam Memory Mattresses Last?


Foam Density

Foam density refers to the weight of one cubic feet of foam in a memory foam mattress. Memory foam is a generic term used for referring to several different types of memory foams and the density of these materials also vary greatly from each other.

Denser memory foams have a tightly spaced cell structure and as such are heavier than their lighter counterparts. Density of memory foam mattresses ranges from 2 lbs to 7 lbs per cubic feet where foams with a density of 4.5 lbs to 5.3 lbs are considered best for comfort and durability.

Depending on the density foams are also classified as low density, medium density and high density foams.

Foams with a density of 2.0 lbs to 4.0 lbs per cubic feet are classified as low density foams, the ones with a density of 4.1 lbs to 5.3 lbs are known as medium density foams and those upwards of 5.0 lbs per cubic feet are known as high density foams.

Low density foams were not common until recently as the original memory foam mattresses introduced around 20-30 years ago, used foams with a density of 4.1 lbs and upwards.

Companies have just recently begun marketing low density foam mattresses which are on average quite cheap as compared to those made up of medium and high density foams. High density foam mattresses tend to last longer as they have a high number of cells to support body weight.

Due to various reasons, medium density foams are considered best for memory foam mattresses as low density mattresses rarely last more than 3-4 years and users face issues related to comfort with high density mattresses as these mattresses have high viscosity.

On average, medium foam mattresses last for around 8-10 years and upwards and similar is the case with high density memory foam mattresses.

Core or Support Base

Core of a memory foam mattress is referred by many names such as core, support base, or support foam layer and lies beneath the actual memory foam. Support base or core is responsible for supporting your body when you are lying or sleeping on a mattress.

Low quality support base reduces the longevity of a mattress and a core of less than 2.0 lbs density will break down, soften and compress quickly resulting in restlessness during sleep.

Mattress Cover

Mattress cover plays an important role in protecting a mattress from dust, dirt and liquids.

Memory foam mattresses are made up of special chemicals which make them quite sensitive to liquids of all types. Liquids and chemical substances found in most food items can affect the workings of memory foam and even a minor spill may ruin your expensive mattress.

Mattress covers play an important role in protecting memory foam mattresses from these hazards and mattresses tend to last much longer when they are protected by a mattress cover.

Waterproof covers are preferred over other covers as these can protect the mattress from almost all types of liquids. Due to their unique molecular structure, it is very difficult to wash a memory foam mattress and as such you must make sure that in no case ever your mattress is exposed to liquids, chemicals or food items.

Routine Maintenance and Care

Like any other thing of everyday use, longevity of a memory foam mattress is also dependent on care and maintenance. Memory foam mattresses must be cleaned on a regular basis as this doesn’t allows dust or allergens to settle in the mattress.

Denser surface of a memory foam mattress doesn’t allow dust, dirt and various other items to seep within, but as the mattress becomes softer after years of use, this can change quickly.

You can increase the longevity of your memory foam mattress by looking after it.

Want to learn more about memory foam? Check out some of our previous guides:

2 thoughts on “How Long Do Foam Memory Mattresses Last?”

  1. You are right about a mattress being an important decision! You spend roughly 1/3 of your life on that thing. Memory foam mattresses are great and durable, but not for everyone. We got one and now regret it. It’s comfortable and has lasted for several years, but it doesn’t offer the back support we were hoping for. Now I wish we had spent more time in the store, testing different models. Don’t let the price tag fool you!

    Whether you go with box springs or memory foam or a hybrid, be sure to test a mattress out. Rest in it for as long as the store will let you before committing to one. And if you’re a couple, both of you should get in there for a test rest. You may disagree on everything and end up getting a model that lets you individually adjust each side’s firmness.

    Do you sleep on a memory foam mattress? Do you find it a major upgrade compared to your last mattress?

    • Yes I do sleep on memory foam mattresses AND also a pillow. It took me long to “make the switch’ but I am super happy I did and from now on, I’ll only be buying memory foam for comfort and a good rest.

      Money well spent definitely! 🙂 I can’t reccommend memory foam enough!


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