Testing innerspring mattresses for a slatted bedframe

Mattress Talk General Mattresses Questions
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It’s time for us to shop for an innerspring mattress for our wooden king size bed with wooden slats and we are thinking of getting a higher end one than our previous one. Mattress stores encourage us to lie down on various mattresses to create a short list with the goal to eventually pick one but these are all on foundations.

How different will the mattress feel on our bedframe? This might help us calibrate our testing in the store.

We are looking for a firm pocketed coil mattress with a tight/flat top, if that helps with the answer.

Thanks

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Hi unmesh59,

Thank you for your question.

One important thing missing from the discussion is the actual construction of your bed frame, because that has a real impact on how an innerspring mattress will feel. Slatted bases are not all equivalent. Slat spacing, slat thickness, whether the slats are rigid or flexible, and the presence of proper center support on a king size frame all influence firmness and support. Without those details, it is hard to say how closely a mattress tested on a showroom foundation will translate to your bedroom.

The type of wood and overall stiffness matter as well. Thicker hardwood slats with tight spacing behave much more like the solid, non-flexing foundations used in mattress stores, so the feel at home will be very close to what you tested. Thinner slats, wider gaps, or softer woods can allow the mattress to dip slightly between slats, which usually makes a firm mattress feel a bit softer and less flat. This effect is more noticeable with tight top, firm pocketed coil mattresses because there is less plush material on top to mask changes in support.

Slat spacing is especially critical. Many mattress manufacturers specify a maximum of about two to three inches between slats to maintain the intended feel and support. Wider spacing can change how the coil unit engages and may even affect long term durability. For king size beds, a solid center rail with legs to the floor is also essential. Without it, the middle of the mattress can feel softer regardless of how firm it felt in the store.

When testing in a showroom, it helps to keep these factors in mind. A mattress that feels just slightly firmer than ideal on a rigid foundation may end up feeling perfect at home if your slats have any give. If your frame has wide spacing or flexible slats, adding a bunkie board or solid deck can make the at-home feel much closer to what you experienced in the store.

Additionally, there are several factors that can explain why a mattress may feel different in a showroom than it does at home. Some companies still engage in the “dirty little secrets” of the mattress industry. For example, certain models are crafted specifically for showroom floors with enhanced edge support. Others keep their showrooms unusually cool, which can make memory foam mattresses feel firmer. Some retailers use carpeting, while others deliberately place mattresses on hard floors. All of these factors can influence how a mattress feels compared to how it will perform on an actual bed frame at home.

On top of all of this, you mention getting a higher end mattress than your previous one. This thought can mean different things to a variety of people. For example, I sleep on the Brooklyn Bedding Plank Luxe, which perfectly describes your preferences as written, except for the high end part, depending on what you are comparing it to.

So before we move forward, we need to establish what you had before, your definition of high end, and your sleep position, age, height and weight. Plus, we need some more information on that bed frame of yours.

Looking forward to helping you work this out,

Maverick

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I did not realize that my question did not have a simple answer because of the other differences between the showroom floor and our bedroom.

The last mattress was from Macy’s with Made for Macy’s branding and is kind of heavy so I need to make an effort to identify the specific model when the housecleaners come. The slats are solid and there is a solid center rail with legs to the floor and I will try to take measurements of slat dimensions and spacing.

I admit that I hadn’t given too much thought to high end beyond we were preparing to spend more :slight_smile: So maybe not higher end, just more expensive?

I’m a 66 year old male, 5’ 9", 150lbs (down from 175!) and mostly a side sleeper. I began to toss and turn more as I lost weight. Wife is 61 years old, 5’ tall, 130 lbs and also mostly a side sleeper. We sleep on our own sides away from the middle. She has no complaints about the mattress. There is no noticeable sag or indentations and the edges are still firm to sit on.

The bedframe is solid wood from a Canadian manufacturer called Baronet and is about 25 years old. The footboard rises above the mattress as obviously does the headboard. It sits on a wall-to-wall carpeted floor.

Not fans of memory foam mattresses from the few times we’ve slept on them; too warm and too hard to get out of. We grew up in India sleeping on cotton futons but became accustomed to innerspring mattresses after moving to the US.

If anything else comes to mind, I will post in this thread.