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How often should I change my mattress?

By Callie Paige

How often should you change your mattress? When it comes to changing your mattress, you’re often met with a generic response of “every 5-10 years” - which should sit firmly in the realms of old-wives tales, alongside “an apple a day keeps the doctor away”.

Research from Furniture123.co.uk, who surveyed 1,000 UK adults, found that “half of Brits are reluctant to replace their mattress after seven years”.


The truth is, how often you change your mattress depends entirely on…you guessed it…your mattress. Depending on the condition of your mattress and how well it supports you, it might be that you don’t have to change your mattress after 7 years. But depending on the quality of your mattress, it could need replacing much quicker.

Take Sid for example - our high quality components and stringent manufacturing processes mean we can offer a 15 year(!) warranty. Many other top mattress brands in the UK offer 10 year warranties, so in both of these instances you should be with your mattress for a very long time.


However, we know this isn’t the case for many mattresses out there, so we’ve highlighted some of the reasons that might indicate it’s time to update your sleep apparatus.

The obvious one: How you feel

The first thing to look for when deciding how often you should change your mattress is whether you’re noticing a difference in how you feel when you wake up. Naturally, mattresses lose their structure over time, but your guarantee from the manufacturer should be the minimum amount of time you’d expect to get a comfortable sleep!


Usually though, mattresses last much longer than their warranty period, meaning it’s important to make a note of when you’re waking up with aches and pains (although we have to say - if you’re waking up after a heavy night of drinking, you might not feel the benefit of a good night's sleep regardless!).


If you are noticing some pain during sleep and when waking up, you can find out more information from our blogs on side sleeping and back sleeping positions. But as a starting point, it may be that your mattress simply isn’t supporting the way you sleep, resulting in unnatural spine alignment. Generally speaking, if you prefer to sleep on your side, a softer mattress will absorb the pressure being placed on your shoulders and lower back, whereas for back-sleepers, a firm mattress will stop your shoulders and lower back sinking too far in. If your sleeping position and mattress composition don’t match - it could be the answer to your problem.

Changes to your body

Whether you view this as a positive or a negative - your body weight will change over the course of time that you own a mattress, which can impact the level of support you receive during sleep.


Again, depending on your sleeping position, if you’ve become slightly heavier, you would potentially need your mattress to become softer, allowing high pressure areas to sink further into the mattress to help align your spine. This works in contrast to becoming lighter, as you would need a firmer mattress that absorbs less of your body weight.

Changes in motion transfer

You may have noticed that you or, if you share a bed, your partner, is moving more during sleep. This can be a result of the softening in springs and foam, that naturally occurs over time with use. When your mattress softens, you’re more likely to move, as the areas surrounding your body are less supportive, resulting in increased movement. Sid’s foam composition includes a layer of high-density, durable memory foam, which adapts to your body and is backed up by our 15 year warranty.

Hygiene factors

Particularly prevalent in sprung mattresses, your mattress is the perfect breeding ground for bacteria due to the heat absorbed during sleep, and rarely being cleaned. An article on Country Living states that :


Adults lose 285ml of fluid each night while sleeping and shed up to 454 grams of dead skin cells each year, all of which are absorbed by the mattress, duvet and pillows.


Pretty horrifying, right? Not to compound your worries even further, but hygiene expert, Dr Lisa Ackerley, also points out:


“People tend to focus on cleaning the things they can see – such as pillows and sheets – but the mattress itself can be a hotbed of potential illness. Most people would be rather surprised by the things you can find in an old mattress. Mould spores and bacteria build up over the years, and although invisible, you could be breathing in these harmful spores at night.” http://home.bt.com/lifestyle/house-home/interiors/when-should-you-replace-your-mattress-and-pillows-find-out-if-your-bed-is-a-health-hazard-11364010993712


In general, the allergens found in mattresses build up over time. But due to the composition of memory foam, which doesn’t have any pockets for springs, allergens such as dust-mites don’t have anywhere to hide, resulting in a healthier mattress.


Change in appearance

One of the most unwanted signs that it’s time to replace your mattress, is that it just doesn’t look good anymore! A sagging mattress not only looks terrible, it also indicates a lack of structure and therefore, reduced support.


Spotting this might be difficult, as the appearance of your mattress will deteriorate over time - meaning you might become accustomed to your mattress looking a bit flat on one side! By keeping a close eye on dips in your mattress, or sagging covers, you’ll be able to identify when it’s the right time to upgrade your mattress.


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To use a worldly idiom, you get what you pay for, and this is no different in the mattress world. Often, it’s higher quality mattresses that contain components that far outlast their cheaper equivalents.


These often seem expensive when compared directly, however to provide some perspective, Sid’s king size mattress will cost you just over £1 per week when you take into account its 15 year warranty. When compared with two of the UK’s most well known mattress brands, eve and Simba, who offer mattresses that are slightly cheaper outright with 10 year warranties, you’ll be paying £1.47 / £1.34 respectively per week.


Think about that 34p per week over 15 years - that’s more than £250… Which even by our standards is enough for a successful night on the town.


Is it time you joined the sleep revolution? As we’ve demonstrated - it’s more affordable than you’d think to improve your bed-appeal. So what are you waiting for? Learn more about Sid here.