Can pocket sprung mattress be put on slatted wooden bed frame?

Thank you for your question, Rosie.

Yes, a pocket sprung mattress can absolutely be placed on a slatted wooden bed frame. There is no reason at all why a quality pocket sprung mattress cannot work well on a slatted base, provided you follow a couple of straightforward steps.

The gap between the slats matters more than anything else

The first thing to check is the gap between your slats. As a rule, any gap greater than 7.5cm (3 inches) needs to be addressed before you put a mattress on top. When gaps are too wide, the springs at the base of the mattress gradually settle into them over time. This causes ridging on the underside, which you will feel when you turn the mattress, and it means the spring unit is not getting the flat, even support it needs to perform correctly.

If your gaps are 7.5cm or less, the fix is simple. Lay an old duvet or blanket over the slats before you put the mattress down. This cushions the underside of the mattress and prevents the fabric from snagging or being marked by the slats themselves.

If your gaps are wider than 7.5cm, the solution is to board over the slats with 3 to 5mm MDF sheeting cut to the internal dimensions of your bed frame. Most large DIY stores will cut this to size for you for a small charge. MDF is the right choice here because it is flexible enough to allow sprung slats to still move slightly beneath it, while giving the mattress a consistent flat surface to sit on. If you are concerned about ventilation, pegboard (which is similar to MDF but with small holes throughout) is an alternative, though our mattresses are fully breathable and do not require additional airflow from beneath.

The central support bar

Most slatted bed frames include a central support bar running lengthways down the middle of the frame. This bar sits slightly higher than the slats in some frames and is a common cause of the hump-back bridge effect, where the mattress dips at the sides and arches in the middle. Boarding over the slats with MDF bridges this bar and eliminates the problem entirely.

Does placing a pocket sprung mattress on a slatted base change the feel?

Yes, slightly. A pocket sprung mattress is designed to perform optimally on a sprung edge divan base, which adds a secondary layer of suspension beneath the mattress. When you move that same mattress onto a rigid slatted base or a boarded slatted base, the internal spring unit will feel marginally firmer, because it no longer has the give of a sprung base beneath it. This is not a problem and many sleepers actually prefer the slightly firmer feel this produces. It is simply worth being aware of.

If after boarding and setting up your new mattress the feel is firmer than you expected, a natural fibre mattress topper placed on top is an easy way to add comfort without changing the base setup.

Sprung slats versus rigid flat slats

If you are choosing between replacing sprung curved slats and flat rigid slats, flat rigid slats are actually better for pocket sprung mattresses. Sprung slats flex under load and can cause the mattress to arch over the central support bar, a problem known as the hump-back bridge effect. Flat, rigid slats with gaps of no more than 7.5cm, ideally boarded over, provide the most consistent and supportive surface. We go into this in detail in our full guide to mattresses for slatted bed bases, which covers solid slats, sprung slats, and how to get the best from each.

To summarise: yes, pocket sprung mattresses work perfectly well on slatted frames when set up correctly. Check the gap, board over if needed, use an old duvet as a protective layer if the gaps are fine, and your mattress will perform as it should.

If you have any further questions, please do call our team on 0161 437 4419. We are always happy to talk through your specific base setup before you order.

Kind regards, Lee