how long does a memory foam mattress last

How Long Does a Memory Foam Mattress Last – Informative A to Z Guide

No kidding! Durability is the primary concern when it comes to buying a new mattress. If you are thinking, which type of mattress will last longer, then the memory foam mattress is here for you.

It was designed by NASA, especially for the seat cushion of a rocket ship to provide pressure point relief and excellent durability.

Well, you might be thinking, how long does a memory foam mattress last? Does it last for a lifetime according to some warranty? Let’s figure out.

How Long Does a Memory Foam Mattress Last

As you can imagine, memory foam will not last forever. The thing that will grab your attention is a lifetime warranty of mattresses; yet, they remain in serviceable condition on average 8 to 10 years.

An expensive memory foam mattress is more likely to last longer. However, the sleep council recommends replacing the mattress every seven years to maintain a sound sleep environment.

Small tip: Long warranty reveals the quality of a mattress.

Durability factor: Density

Density is the most prominent object to look at while considering the longevity of a memory foam mattress. Let’s find out how density impacts durability.

What is the density of foam mattress

The density of a foam mattress measures the weight of materials of a foam mattress per cubic foot. Its generally measured in pounds per cubic foot. There are, of course, some standards to consider density.

Density scale

For instance, 4-5.3 lbs are considered medium density, which is an ideal mattress. Under 4 lbs and upper 5.3 are regarded as low density and high density, respectively. More dense means more cells are tightly spaced structure, which provides more support with longer lifetime and affects feel and performance.

 Low density, on average, lasts 4-6 years. On the other hand, medium and high-density mattresses last more than eight years on average; usually, these mattresses last even longer according to caring and usage.

Although the high density is champion in terms of durability, fewer people prefer it. Because of its increased viscosity while medium features high motion isolation, very convenient for bed sharers. FYI, if you are a heavy person, we’d like to suggest high density for you.

Small tip: 12-inch thickness would be a better choice if you are heavier or sleeping with a partner and need more cushioning. 

Taking care of mattress

We both know nothing lasts forever, but we can extend longevity, right? The same thing goes for the mattress also. So, how are you going to extend longevity?


One should vacuum the mattress regularly to clean dirt particles and keep airflow. It’s good for sound sleep. 

There are tons of ways dust mites and mold can strike on your bed, which is very harmful to allergy. Sadly, a bed fulfills all requirements they need to grow and live. In this case, you should use several sprays to keep your mattress healthy.

Don’t forget to dry your bed naturally. Drying on sunlight is the simplest method; on the plus side, it will alleviate the spray’s odor.

Caution: obsessive artificial heat, i.e., from electric blankets or heating pads, might trigger premature wear.

Liquid protection 

It would help if you did not stay on the bed for more than 8 hours, which means do other things off the bedstead. Liquid spills help premature wear out. You don’t want to drink wine on the bed, do you?

If you have either children or pets, your bed is most likely to get wet. To avoid liquid spills, you can use a liquid protective topper since frequent spills and smudges affect foam density.

Small tip: when you buy a memory foam mattress look for BS certification which ensures fire resistance capability


Rotate your bed as often as you can, but we would suggest rotating once within three months, at least. Rotating mattress will help you distribute body weight evenly throughout the whole area of the bed, extending durability moderately.

Small tip: cheap foam mattresses wear out sooner than you think.

Mattress deterioration: Sagging

People ask whether a foam mattress sag; well, the answer is yes. A weak supportive layer causes sagging on the bed.

Sagging typically occurs in the area, which supports most of the body pressure, in other words, where the hip and shoulder area lies. If you feel highly uneven, then it might be the time when you replace your mattress. 

However, an unsteady base can cause the same problem; so, you should check the mattress on an even floor. 

Caution: a wrong frame also responsible for premature wear and tear.


The bottom line is that memory foam mattresses last longer than other beds; it needs a little care, though.

Don’t Forget to write a comment below on what point you think more helpful for you. We do love reading our readers comment !

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