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Why do new mattresses sag so quickly?
Here’s AI’s response through Google:
Most modern mattresses use low‑density polyurethane foams that soften fast, especially under the hips and shoulders. One‑sided designs, weak coil units, and memory foam comfort layers accelerate body impressions.
Here’s the rest of the story:
AI mentions memory foam last, as a contributing factor, when in fact, it’s the main reason why so many of today’s mattresses need frequent replacing.
Mattresses have always been pressure sensitive.
But when you add memory foam, they also become temperature sensitive.
As memory foam warms from the body heat you give off, it softens and your body sinks into it. At first, only a little…just enough to be comfortable.
However, memory foam is a low-density foam. So, it doesn’t take long before you’re sinking into your relatively new mattress much too far, to the point where it’s no longer comfortable and feels like it’s sagging.
AI’s explanation is a bit misleading in other respects, as well.
One sided mattresses have been the norm for more than a quarter century.
It’s the quality of the components that determines how well a mattress wears.
And, since memory foam has become so widely used, almost no mattresses are using polyurethane foams for the comfort layers.
None of this happened by accident.
Memory foam is specifically designed to do exactly that.
And you’ll notice that when you get out of bed, the memory foam returns to it’s original shape and the sag goes away, hence the nickname name,
“Memory Foam”.
Visco-Elastic Foam is an offshoot of polyurethane… a petrochemical based product that is specifically designed to avoid being replaced under the terms of a standard mattress warranty.
If you were to read your mattress warranty, which most people don’t, you’ll notice that it protects you against sags measuring 1.5” or more… that’s a sustained impression with no one on the mattress.
But as previously mentioned, memory foam returns to its original shape, or close enough to it, that you are highly unlikely to prevail in a warranty claim.
As previously mentioned, memory foam is temperature sensitive.
It absorbs your body heat and reflects that heat back to you, causing you to sleep hot. That’s why so many memory foam products use a gel to mitigate that heat.
And while it helps, it doesn’t last all night long.
The gel reaches a saturation point, usually a few hours later, and then you’re hot.
To be fair, a lot of this depends upon your body type.
Slender people tend to give off less body heat and are less negatively affected.
Reviews vary widely, and for various reasons.
One reason is body type. Another is that reviews are often solicited immediately after the mattress is purchased. The problems with memory foam don’t usually arise until shortly after the comfort guarantee has expired.
And, “What the Hell is That Smell?!”
Rising above everything else is a terrible odor that your retailer assures you is only temporary.
As previously mentioned, poly and memory foams are petrochemical products.
After poly foam is made, it passes through rollers that break open all of the cells and release all of the trapped toxic chemical gasses. It’s then aired out before being shipped to the mattress manufacturers.
They don’t bother with the curing process when making memory foam.
The cells of the foam break open in your home as you use the mattress, releasing those toxic chemical gasses in your bedroom.
Soy based memory foam is available, but it’s not the norm and it doesn’t prevent the other problems associated with memory foam.
There are many good alternatives to memory foam.
You only need to ask to find them.
Thanks, TME
TME Website: https://themattressexpert.com/
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