How Long Does Memory Foam Last?

Do you have trouble sleeping at night? It could all be because you need to replace your memory foam. While you might not realize it, each mattress has its own shelf life, and if you keep on using them every day, chances are you would need a replacement in as soon as ten years.

If you do not replace the mattress, it could lead to aches in the body and can disrupt your sleep. In turn, it would lower your productivity the next day, and you would be feeling sleepy and irritated all day long. So, how do you know how long does memory foam last?


Memory Foams And What They Are

Memory foams were first designed in 1960 for NASA Airplane seats. They are made of a substance called viscoelastic which is highly energy absorbent and soft. It responds to heat and pressure and molds to the body shape, and returns to its original shape when pressure is removed.

Soon, it was being used in other applications and is now really been catching up for its use in pillows and mattresses. So, whenever you are buying a memory foam mattress, the big question on your mind is ‘how long will it last?’. The sales representative certainly has a white lie ready for you which still leaves you wondering about its longevity. Well, that depends on a lot of factors.

Life Expectancy of a Memory Foam Mattress

A memory foam mattress typically lasts longer than an innerspring mattress with the lifespan of about 10 years or more. The superior longevity can be attributed to the material that goes into its making. There are also other factors in play that determine how long a memory foam mattress will last.


Foam density is the weight of one cubic foot of material. Denser foams have a more tightly packed cell structure. The spacing of the cells affects the feel and the performance of the mattress. Low-density foams are those between 2-4 lbs and last 4-6 years; medium density foams weigh between 4.1-5.5 lbs and high-density foams are the ones over 5.5 lbs. A higher density foam will last longer i.e., 8-10 years, because it can support weight better. However, higher density foams are not the most comfortable ones. Medium density foams offer optimum comfort and have good durability as well.

Support Base

The core or the support foam layer beneath the layer of memory foam acts as a supporting structure to the mattress. A good quality core, usually a one between 2- 2.5 lbs offers good support to the body and doesn’t soften or compress easily making the mattress last longer. High resilience cores are considered to be the ideal ones. Buying a low-density core means you have compromised on the support and longevity.


A good quality foam ideally comes with a coverage of 10 years. Beware of using the imported cheap kind while picking a mattress. Although a good mattress might look expensive, it is the price you pay for a good quality sleep and hence life. A good quality mattress comes with a10 years of pro-rated warranty at the least.

Check for quality

Before buying a mattress, read the brand reviews and make sure you are buying a good quality product and not a knock-off. If you are worried about the initial investment, you must also understand that a low-quality mattress doesn’t last that long anyway.

Caring for the mattress

How long your memory foam mattress will last also depends on how you care for it. Make sure the base of your bed is solid and supportive and doesn’t have any broken slats. A strong foundation will keep the mattress from sagging. Use a waterproof mattress protector to avoid spilling any liquids on the mattress, because foam doesn’t do well being wet. You could also use a padded mattress cover which will not just keep off dirt and stains, but also prevent dents that may occur over time with wear and tear. It is also a good idea to flip your mattress every few months to even the wear and allow it time to regain its shape.

All said and done it is best to change your mattress after a period of 7 years to get the best quality sleep. If you know how long does a memory foam last, you will know when to change it – so that you have no problems whatsoever.