king switching to to twin XL

We have a king w/ pillow top which is 12 yrs old. We are both very heavy people. and the mattress shows to valleys and especially the side where I sit to get dressed. My back bothers me but is that just my weight or the mattress? Pillow top was a mistake.

The king has two separate foundation underneath. Looking at foundations, they don't show any sagging or indentations like the mattress. What we'd like to do is have two separate twin XL, etc with its own frame.

Is there any reason to purchase new foundations. It is likely we will move in less that 5 yrs and won't take furniture with us so I don't want to spend thousands.

Advice please?

As mentioned, the pillow top was a bad decision which only makes the indentations worse. I'm thinking a reversible mattress would be better..

I'm going to assume any mattress, except a slab in a jail cell is going to wear down because of weight.

Seen 653 times Last updated Nov 2022

Anonymous992

Nov 2022

One Answer:

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GoodBed Help from San Francisco, CA

answered Nov 2022

Hi there -- Thanks for your question.

In general, it's a good idea when replacing your mattress to replace your foundation at the same time. This is because it is a relatively small investment (relative to the cost of a good mattress) and can play a large role in protecting the longevity (and value) of your mattress. Wear or weakness in a foundation can also be a little tougher to spot with an eye test sometimes. For example, a weak foundation can sometimes be the cause of (or contributor to) sagging when you are on the mattress, even if it appears to be fine when no one is on the mattress.

With that said, if you can definitively determine that the sagging you are experiencing when you are on the mattress is coming exclusively from the mattress itself, and not the support under the mattress, then in your case you could probably get away with continuing to use the two foundations you already have.

I hope that's helpful.