I've had this mattress for about two years. I rotate it every three months like clockwork, but there's still a noticeable dip where I sleep. I'm around 270 pounds so I figured that was heavy enough to cause it. Is this something I should have expected, or is the mattress just not up to it? It's a memory foam from one of the bigger online brands. I don't want to buy another one if the same thing is going to happen.
Mattresses
The bed has a dip even though I rotate the mattress
Rotation helps but it doesn't fix compression. A dip isn't always a defect either. What's the warranty sayy?
Two years for a 270 lb sleeper on a memory foam seems about right tbh. Most of those brands are not actually built for heavier people despite what the marketing implies. The foams are just lower density.
Are you rotating or fllipping? A lot of people say rotate when they mean flip. But most modern mattresses can't be flipped at all, only rotated head to foot. If yours is one of those, rotating just moves the dip to the other end eventually, it doesn't stop it.
Good point. I assumed rotation, not flipping.
the dip might also be your foundation. Slats too far apart or a box spring that's sagging can make a perfectly fine mattress look like the foam collapsed. Worth checking before you blame the bed.
I'm 250 and went through the same thing. Memory foam lasted about two and a half years before the dip got bad enough to hurt my back. Switched to a latex hybrid and it's holding up much better so far. Not cheap though, though.
How deep is the dip exactly? If you lay a straght edge across it and measure, you'll know whether it's within the warranty threshold. Some brands use 3/4 inch, some use 1.5 inch.
Also pull the cover off and inspect the foam layers if you you can. Sometimes the top layer has a soft spot that's not visible up top. If the base foam is fine, the mattress could probably be salvaged with a topper.
This is why I stopped buying foam entirely. Two years is honestly not long for something that cost a thousand dollars.
It's not that long, but it's not unheard of at that weight either. The foam cell structure gives out. Rotation spreads the wear out but the foam still gets crused under the same spot repeatedly.
One more thing: check the warranty language carefully. A lot of them explicitly list a dip depth and also list normal softness as not covered. They can deny the claim if they determine the dip is from body impression rather than a structural defect, which is a pretty common way for them to get out of paying.
Yeah and I've heard the warranty process is a nightmare. Photos with a straight edge, original receipt, sometimes they want you to pay for shipping. Just be ready for that if you go that route.
So basically the answer is it's either the foundation, normal wear for your weight, or a defect. You can rule out the foundation with a quick check. After that it's mostly about whether the dip is deep enough to argue with them over. I'd measure it before doing anything else.
If it's out of warranty and too soft in one spot, a firmer topper can buy you time. Not a fix but cheaper than a new bed.