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January 2020

Mattresses for slats and slatted bed bases

Slatted mattress bases can cause endless frustrations for bed owners. What mattress is suitable? Which type is best? There is no justification to say whether one type of slatted base is better than the other but both come with their own set of benefits and problems. This article explains what to look out for and tips when using a slatted base with a mattress.

Firstly, nearly all mattresses are suitable for nearly all bed bases/frames but you do need to take some precautions if you’re opting for a slatted mattress base. It’s a known fact that they may be lighter and cheaper to buy but they can also provide an uneven form of mattress support.

Handmade heavily upholstered mattresses really need more support than a slatted base can offer

Updated 2020: We believe that an upholstered base is the best support for a mattress but we are also realistic that not everyone likes the aesthetic of a divan base. You may also have a bed frame instead of a divan that uses a slatted base. Lastly, your budget may only allow for a new mattress and not an additional base so we have some ideas on how to help improve the support of a slatted base.

Types of slatted mattress bases

Slatted bases are really popular and can be found in most retailers such as Dreams, Bensons and Furniture Village. Mainly due to the fact they are incredibly cheap to produce and easy to package for logistics & delivery. Most slatted bases as self-assembly meaning they can be delivered in a box of packed into the boot of a car from somewhere like IKEA. Whereas a quality Divan base takes up a lot more storage in a warehouse and needs more care when lifting it given the upholstery and finer details.

There are two main types of slatted bed frames:

1.Sprung Slats

Sprung slats are wooden slats that clip into a bracket on each side and are curved. This allows them to flex when pressure is applied to them. If you press on them they will flex and move.

There are many anecdotes on this site and throughout the internet where the mattress develops a central dip known as ‘The Hump Back Bridge Effect’. This can easily be attributed to the use of a slatted bed frame where the pressure of the slats (the arches) are too firm to ‘give’ under the weight of mattress and user and, therefore, the mattress is prone to settling on the central support bar.

bedstead slats
Sprung slats can create a humpback bridge effect or tear the mattress fabric as they move

There are other reasons why a mattress develops a ridge in the middle. The mattress itself can be so unsubstantial and lightweight that the arches on the slats are pushing the internal spring unit out of shape. The underside wadding of the mattress (one sided no turn) has such an inadequate level of support upholstery that the springs are practically forming on to the slats.

2.Solid Slats

Solid slats are firm pieces of timber that are either screwed to the bed frame or sometimes attached to tape that you then lay out on the bed frame. They are solid and usually sit in a fixed position. Though the taped versions can sometimes fall off if you move a lot causing the mattress to fall into the base.

On lower-priced bedframes, the slats tend to have far too wide a spacing between them the example below is the most extreme version we have seen of this. This can lead to the mattress bulging and squeezing itself in between the slats damaging the mattress irreparably and leading to an awful nights sleep.

metal bed frame and slats
Metal slats shown here are much too wide to support a mattress properly

Solid slats are usually wooden but can sometimes be metal like the example above. Notice just how thin the metal slats are. This can cause issues with mattresses as they apply unnecessary pressure onto various points in the mattress which can damage the mattress and cause you to have a rather restless nights sleep.

Solid slats do have the advantage over sprung slats as a better surface for all pocket sprung mattresses. The thing to remember is that a pocket sprung mattress ideally requires a flat even surface in order for the mechanics of the individual springs to work with the sleeper.

The problems with slatted bases

If we take a lead from all the high-end manufacturers of pocket sprung mattresses, we see that they are all partnered with a Sprung Edged Divan Base.  As we said earlier the suspension qualities of a sprung edged base are precisely what the sprung slats are trying to replicate but not too efficiently we might add.

There is a considerable difference in user comfort levels between a mattress on a sprung edged divan base, and a mattress on a sprung (or solid) slatted base. Pocket springs work best when there is a system of gradual suspension. This means that as the weight applied to the mattress is under duress, the springs in the mattress takes the strain and the springs in the base cushions the blow if you will.

How to prevent slatted bases from damaging a mattress?

I have to point out here that to fully understand this post you will have to read the posts on spring types, divan bases, mattress upholstery and wadding etc. You will soon come to realise everything to do with manufacture and usage will depend upon a number of variables. Use these articles as an initial line of questioning, but bear in mind that they only just scratch the surface and a great number of other factors will have to be taken into account.

Folding a duvet over the top of slats before you put your mattress on will offer some protection against damage

A mattress placed directly onto a slatted base with no cushioning whatsoever. This will also cause the mattress to gain unsightly and potentially damaging ridges into the underside of the mattress upholstery noticeable when you turn your mattress. At the very least you should be placing some sort of cushioning foundation directly onto your slats to prevent this happening such as an old duvet etc. This also prevents any splinters from damaging the mattress and causing snags.

There are products sold as mattress pads for this very reason but these are very minimal in construction that the duvet thesis is a far better and more affordable solution.

Boarding over a slatted bed base

Mattress Slats (1)
Boarding over slats is the best fix for problems with slatted bases

To address the issue of the desirable flat surface for your mattress when used on a sprung slatted base, you should really be taking measures to do all you can to achieve this. The best method we have found is to place thin sheets (about 3-6mm) of MDF onto your slats, to create the flat even surface required.

This image shows three lengths of MDF sheets bridging the arched slats and central bar to prevent the central dipping problems. They are also not so big as to prevent any problems with aeration to the mattress.

This has been topped off with a substantial feather topper to add an element of cushioning to the underside of the mattress. To prevent the topper slipping when the mattress is turned I have placed the corner ties on the topper between the noggins on the slat inserts.

As stated above there ‘will’ be a comfort difference between a mattress used on a slatted base and the same mattress used on a sprung edged divan.

Are John Ryan Mattresses Suitable for Slatted bases?

All of our mattresses are suitable for slats.

We always advise with our hand-made mattress range that if you’re going to use a slatted base you consider the support from the base. If the slats are too far apart consider boarding them over to help support the mattress. Also adding a duvet will help prevent slats from snagging on your mattress.

Origins latex0025 3
All our mattresses are suitable for slats. Visit our mattress range here

We have also found that slats can nip and bite the mattress fabric over time causing tears and snags, by boarding over and using say a cheap duvet to cover the base you can avoid having your slats damage the mattress.

What is a Bedframe or Bedstead?

This a term thrown about that, in reality, is quite meaningless and, in my opinion, can be quite a cause for unnecessary concern. If we look at Vi-Spring as an example, they offer two types of mattresses in their range under the heading ‘Bed Collection’ and ‘Bedstead Mattresses’.

Their top of range mattresses such as the Magnificence and the Signatory fall into their ‘Bed Collection’ headings. They are often accompanied with a bedstead. Does this mean you have to use a bedstead with the mattress? Will you have to opt for a lesser model? No of course not, you could use any mattress with a divan or sprung edge divan base instead.

artisan bespoke mattress
Don’t let bedsteads confuse you

If we look at the construction between these two ranges of bedsteads we see that the only difference is the inclusion of a wool spring protector pad on the mattresses deemed fit for use on a bedstead. This is the component directly on top and bottom of the actual spring unit and the following layers of upholstery can be deemed similar to the models within their Bed Collection.

The wool spring protector pad will be within a 500 GSM tolerance and although compressed and slightly firmer than the usual 1000 GSM bonded wool and cotton as the insulator used for the bulk of their models, I cannot see any reason to differentiate between these two ranges.

You can use any quality mattress with either a bedstead, bedframe or divan base

If the returning argument is that there has to be a more substantial spring insulator for mattresses used on a bedstead, then surely this negates the benefit of having a completely pliable calico spring unit in the first place. I really can’t understand it, particularly from a manufacturer of this calibre.

Slats can nip your mattress and damage it if not covered properly
Slats can nip your mattress and damage it if not covered properly
Boarding over slats can help correctly support your mattress
Boarding over slats can help correctly support your mattress

What’s the ideal base for a foam mattress?

The best answer is to go for a platform or sprung edge divan ideally. This ensures a consistent surface and removes the issue of slats causing dipping or damage to your mattress. Whilst a nice looking bed frame is a consideration when buying a new bed, you also have to weigh this up against the impact of certain slatted bed frames. Particularly against your mattresses longevity, comfort and consistency.

Divan bases are the most consistent base for any mattress type
Summary

Slats are fine as an entry-level mattress base provided they are not spaced too far apart and you board over them. If not you can end up with sagging mattresses or even rips and tears in the mattress fabric. The best way to avoid the hassle of slatted bases is to choose an upholstered divan. Saving the need for any boarding over or tweaking.

We are have developed a Luxury mattress base pad for our Legacy mattress but have yet to create one suitable to remove the issues for normal slatted bases. This is because they make the mattress too high. We at present offer a range of divans which can be used with your existing mattress or one of our models.  If you need more help please call our friendly team on 0161 437 4419.

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