Hi Jamie,
The most general answer is yes, there are coil/spring mattresses designed to minimize motion transfer. They often incorporate pocketed coils or individually wrapped coils.
Pocketed coils are each encased in fabric, allowing them to move independently of one another. This design helps to isolate motion, so when one person moves on their side of the bed, the motion doesn’t transfer as much to the other person’s side.
Additionally, when some coil mattresses incorporate layers of foam or other materials above the coils that further absorb and minimize the motion transfer.
Memory foam, which I am not the biggest fan of does an excellent job of reducing motion transfer as it is by nature the characteristic of the foam.
The following foams are generally accepted as best at reducing motion transfer, but there are some drawbacks and “feel” differences with each.
Foam mattresses are generally better at reducing motion transfer compared to traditional innerspring mattresses. The effectiveness of foam in reducing motion transfer can vary depending on the type and density of the foam. Here’s a list of common foam types in order of most effective to least effective at reducing motion transfer:
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Memory Foam: Memory foam is renowned for its ability to absorb motion and isolate it, making it one of the best options for reducing motion transfer. Its viscoelastic properties allow it to contour to the body and absorb movements, preventing them from being felt across the mattress.
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Latex Foam: Latex foam also performs well in reducing motion transfer, although it may not be as effective as memory foam. Latex foam is resilient and supportive, yet it still provides some level of motion isolation.
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High-Density Polyfoam: High-density polyurethane foam, often used as a support layer in mattresses, can help reduce motion transfer to a certain extent. However, it may not offer as much motion isolation as memory foam or latex foam.
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Low-Density Polyfoam: Low-density polyfoam is less effective at reducing motion transfer compared to higher-density foams. It tends to be softer and less supportive, which can result in more motion being transferred across the mattress.
As mentioned, try to avoid viscoelastic memory foam, particularly if you sleep hot, do not like to sink too deep into the mattress, and you are someone who might struggle to get out of bed. I added a tempurpedic memory foam topper to a previous mattress and my wife absolutely hated it. She complained she couldnt move in the mattress and felt as if she was being swallowed by slow moving quick sand.
I did not mention twin xl’s to form a king, but that is an option. Additionally, most of the Trusted Members here offer mattresses that have split internal comfort layers. Many of them utilize latex, which is #2 on my motion isolation list. They would be the authorities on collaborating with you to find a mattress that matches your PPP’s, body profiles and comfort levels. @Sleep_EZ, @Arizona_Premium, @CST, @FloBeds can speak to finding a latex combination that will suit your needs.
@DLX does not use latex in the Premier Hybrid, but I can say from personal experience, when I installed a queen DLX Hybrid for my elderly MiLaw, my wife and I tested the mattress firmness (one side firm, the other medium) and we could barely feel each other moving around on the mattress. As an internally split queen, I found that to be quite impressive. I do remember hearing that they plan to create a latex mattress in their upcoming lineup.
Hopefully, this helps with understanding about motion isolation and the materials best suited for the job.
All the best,
Maverick