Settlement and Indents

A while ago the National Bed Federation (NBF) noted that retailers were not informing customers that all new mattresses, in particular high end mattresses were subject to settlement. This means that initially, body impressions would be more visible as the mattress fillings directly beneath the user are compressed.

Although settlement of fillings occurs in every mattress it seems that mattresses with comfort layers of memory foam, reflex or other high density foam and latex are less susceptible  to this. Mattresses with very soft layers such as wool, wool cotton, polyester are more prone and therefore constant twisting and rotating of the mattress whilst new is extremely important to even out the wear pattern.

Even Vi-Spring -one of the premier mattress manufacturers – gives this essential information on their site advising that initial body impressions are not a fault of the mattress but an intrinsic part of the mattress bedding in period.

In my experience settlement can be a cause of unnecessary concern. It shows itself more in mattresses with a bigger span area such as Kingsize or Superking sizes. It is obvious that you are only sleeping in an area the width of your body and therefore the central and perimeter areas will be under utilised. After a few weeks it may look like the sleeping areas are wearing quicker than the rest of the mattress but constant turning and rotating will in time equal out this pattern.

Quirkly, cheaper end mattresses with minimal layers of wadding tend not to show body indents  as there is so little wadding to indent you tend not to notice it more readily. You are primarily sleeping directly on the spring unit 

So what can be done? Firstly not many people realise that the underlying layers used in the mattress will have an effect on how they settle. Foams as bridging layers are extremely resilient to this and in many of the high end mattresses I sell I always try to add an inch layer of Reflex foam above the spring unit as the resilient bridge between the springs and the primary comfort layers . If this was not there then when you are compressing the comfort layers you will be doing so directly on the springs with absolutely nothing taking the strain. 

Absolute high end mattresses with natural fibres [rather than polyester] as the primary layers utilise components such as horse hair, coir, coarse cashmere and so forth as the bridge between the spring unit and upper layers doing just the same job as as a suspension between soft [primary] and hard [springs].

A valid argument is that having a foam layer above the spring unit (pocket sprung) detracts from the individualised mechanics of the springs themselves. Possibly true – but I would argue that the foam is acting like a dampener for your bodyweight and distributing the load over a greater area rather than being directly over the springs themselves.

Final layers of wool or soft polyester are included entirely for softness and comfort but has absolutely no support or resilience. Therefore the layer directly below must be a component that offers a degree  of support to prevent you sinking right in to the spring unit. As I mention in another post, manufacturers will include Cashmere, wool, silk etc often just for marketing purposes – these luxurious layers (often minimal and at times utterly useless) offer nothing for support and everything for comfort. Unless they are backed up with some kind of resilient layer then you will find the mattress will be more prone to body indents a lot quicker than necessary.

Firmness levels are also something to consider to minimise settlement. A  mattress that has been traditionally hand tufted will compress the fillings so that there is very little room for movement and thus creating the firm mattress. Conversely, the fillings in a soft mattress will be loose and so settlement and indents will show more readily. And there you have your dilemma !!  So what can you do?

Protecting your mattress is key. So by adding an additional layer such as a soft blanket, basic topper or even a basic duvet beneath the top sheet to suit your own personal comfort level will in the long run have an enormous impact on the life of the mattress and potential settlement. Support for your own bodyweight should always take preference over the comfort level as it is easier to manipulate comfort than it is to alter the support.

Never put your bottom sheet directly on top of your mattress, there really has to be something beneath to protect your mattress from the copius amount of moisture you perspire each and every night. In time, you will be so glad you did.