That said if your box spring is rigid and firm less than an inch of give it should be okay to use with a memory foam or latex mattress.
Foam mattress box spring plywood.
All you need for your foam mattress is a solid base.
Do doctors physicians recommend placing a piece of plywood between your mattress and box spring.
Can i use plywood under a box spring.
Using a box spring for a foam mattress.
You can find perforated plywood in a good hardware store.
Closely laid wooden slats a metal base a bunkie board or even the floor will all do just fine in place of a box spring.
You can also create a flat surface with a bunkie board or a piece of plywood.
Nectar has step by step instructions on how to do that.
While you shouldn t directly use a memory foam mattress with a box spring you can still use it to make your bed taller by slipping a bunkie board between your mattress and box spring.
The plywood also gives added strength to allow even distribution to the weight of the memory foam on top of it.
Back in the day this was a common practice for physicians.
In order for your box spring to allow proper air circulation i recommend you put a sheet of perforated plywood on top of the box spring.
In the case where the mattress was originally designed for use with a flexible boxspring use of plywood under the mattress will accelerate wear.
Bunkie boards are pieces of plywood or particleboard that are two or three inches thick which provides a flat surface with enough support to prevent your mattress from sagging.