Hi Jonathan,

Thank you for your enquiry on our website.  Sorry to hear you're experiencing pain upon waking.  I know from experience how frustrating it is to wake up with aches, from really firm holiday mattresses in my case.

Just to address the negative first, you should be rotating your mattress monthly to even out the wear, you mention you've done this twice which would mean that all the settlement will be in the same places on the mattress, whilst rotating isn't as beneficial as turning, you can't do this with a one-sided mattress like memory or Tempur foam mattresses so rotating is advised to minimise the settlement in any one place.  That said I wouldn't expect it to be so severe as you've described.

You can read our Mattress Care Guide here.

Ok, so there's clearly an issue with settlement if you're sinking through to the base. It would be really helpful to know which Tempur mattress you bought, Tempur original, Tempur cloud or temper sensation.  Let's say based on your weight you went for the Tempur original, this is an 85kg density foam, so firm foam with a slow sink.  It will, of course, soften over time, just like springs soften slightly.  This is usually most noticeable within the first 6 months and then it stays pretty consistent once it has bedded in.

I don't believe you should be sinking all the way through though Jonathan.  Based on your weight range you are at the middle of the standard mattress guidance, which is 18 stone before many retailers either won't guarantee the mattresses stability or tension.  Mattress materials, especially foam have a tolerance for weight and when this is exceeded the lifespan or tension is compromised.  I know this all sounds very doom and gloom but I'm laying out all the usual excuses you may encounter first before I recommend your best next step.

Naturally, the heavier a person is the more frequently they may need to change their mattress.  Which is why sometimes adding a quality mattress topper can help as this will take the brunt of the compression and if need be this can be replaced at a lower cost than the entire mattress.  That doesn't mean that you shouldn't expect decent life expectancy out of your mattress!!

I couldn't say without physical inspection whether your Tempur mattress has failed, also their lawyers would be on my case if I did!  What I can say is that it sounds as if the mattress you have isn't supportive enough for your weight.  I would be recommending a mix of pocket springs and maybe a latex or foam topper.  This would give you the support you need from a fully turnable mattress but with the sinking feeling of a thick foam topper.  The benefit is if the foam needs replacing in a few years, its a far cheaper experience than £3500!  It also means you get 4 sides of the bed to play with rather than the one side of a Tempur mattress.

We would be happy to chat with you over the phone regarding the suitability of any of our mattresses, but as a starter for ten I'd be looking at one of our John Ryan By Design models, start with the Origins Pocket Reflex 1000 and then the Artisan range which can all be ordered with a firm tension spring to suit your body weight.

I certainly would get in touch with Tempur and raise the concern about potential settlement and dips in the mattress.  If you would like to discuss this please do not hesitate to call the office on 0161 437 4419.  Our office hours are 8 am - 8 pm Monday to Friday and 10 am - 4 pm Saturday and Sunday.