Good sleep depends on the surface you sleep on, and every mattress has a shelf life. The tricky part is that a mattress fails gradually: it still looks fine long after it has stopped supporting you properly.
Quick answer: Most mattresses should be changed every 7 to 8 years, though a well-made hybrid can last 10 or more with good care. Age is only a guide: if your mattress sags, feels lumpy, aggravates allergies, or you wake up stiff and sleep better in other beds, it needs replacing regardless of how old it is.
How long does a mattress last?
Lifespan depends mostly on what is inside the mattress and how well it is looked after. The Sleep Foundation puts the typical range at 7 to 10 years, with construction quality the biggest factor.
| Mattress type | Typical lifespan | What usually fails first |
|---|---|---|
| Open coil / traditional sprung | 5 to 7 years | Springs soften and the surface dips |
| All memory foam | 6 to 8 years | Foam compresses and stops recovering |
| Pocket sprung hybrid | 7 to 10+ years | Comfort layers wear before the spring core |
Hybrids tend to last longest because the steel pocket spring core carries the structural load, rather than asking foam to do everything. It is the same reason every REM-Fit hybrid carries a 15-year guarantee on the spring unit.
The seven signs your mattress needs replacing
1. Visible wear. Next time you change the sheets, look properly: stains, rips, exposed or noisy springs, and dips where you sleep all mean the structure is going. Most modern hybrids are one-sided, so rotate head to toe to check the surface evenly, but do not flip them.
2. A visible or feelable sag. Lay a broom handle across the bare mattress: a valley under it means the support core has failed, and no topper or protector can fix that.
3. You wake up stiff or aching. Waking with back, neck or joint pain that eases through the day points at the mattress, not you. Our guide to the best mattress for back pain explains what proper support should feel like.
4. Poor sleep that improves elsewhere. If you consistently sleep better in hotels or spare rooms, your own mattress is the common factor. Adults need around 7 to 9 hours of quality sleep, and a failing surface quietly steals it.
5. Allergies getting worse in bed. An old, unprotected mattress accumulates years of dust mites and allergens. If mornings start congested, our dust mites guide covers what is happening and what helps.
6. Lumps and uneven spots. Lumps mean the fillings have broken down or migrated. A healthy mattress keeps a flat, even surface.
7. You can hear it. Creaks and pings from the springs signal a support core at the end of its life.
How to make a mattress last longer
You cannot stop a mattress ageing, but you can slow it down considerably. Use a washable mattress protector from day one so sweat and skin cells never reach the core. Rotate the mattress head to toe every few weeks, keep it on a supportive base, and air the bed each morning.
The Sleep Foundation's advice on flipping vs rotating matches the modern rule: rotate regularly, but only flip a mattress designed to be double-sided.
Replacing it: what to look for this time
If your mattress is showing the signs above, choose the replacement on construction rather than habit. A pocket sprung hybrid gives you the support that lasts, with foam comfort layers doing the cushioning: our guide to what a hybrid mattress is explains the construction properly.
REM-Fit 3000 Supreme Hybrid Mattress
The middle of the range and the usual starting point: a medium-feel hybrid with open-cell memory foam over dual-layer pocket springs.
Shop the 3000 Supreme✓ 100-night trial ✓ 15-year guarantee ✓ Free UK delivery ✓ 0% finance
Firmer sleepers and back-pain sufferers should look at the 4000 Ortho Elite, and hot sleepers at the 5000 Lux Elite. You can compare every tension side by side in the full hybrid mattress range, and old mattress removal is available at checkout.
Frequently asked questions
Can a mattress last 20 years?
Almost never as a surface you should actually sleep on. Even if the structure survives, two decades of absorbed moisture, skin cells and allergen build-up make an old mattress a hygiene problem as much as a comfort one. Ten years is a more realistic ceiling for a quality hybrid that has been protected and rotated.
How do I know if my mattress is causing my back pain?
The pattern to watch is pain that is worst when you wake and eases as the day goes on, especially if it started gradually as the mattress aged. The broom-handle sag test confirms it: a dipped mattress cannot hold your spine level, whatever firmness it started at.
Does a mattress protector really extend a mattress's life?
Yes, meaningfully. The protector absorbs the nightly sweat and skin cells that otherwise degrade the comfort layers and feed dust mites, and it washes clean in the machine. It also keeps the mattress unstained, which protects your guarantee.
How often should I replace pillows and bedding?
Pillows every one to two years, or as soon as they fail the fold test. Bedding is about washing rather than replacing: weekly for sheets, with pillows themselves washed every three to six months where the fill allows. Our guide to washing pillows covers the method by fill type.
