How To Store A Mattress On Its Side. It is okay to move the mattress on its side, but for storage, it is better to store flat as the coils and inner workings could shift by storing it on its side over a long period of time. However, as it turns out, there are rules on how to store a mattress properly.
If you must store it on its side, try to do so only for short periods of time, otherwise, you find a flat surface upon which to lay it down. When storing on the ground in a storage unit, lay a tarp on the ground first. The structure and coils of the mattress were intended to lie horizontal.
When storing remove any bedding first.
Here’s how to store a mattress in a storage unit: Lay the mattress and box spring flat in storage: Make sure your mattress lies flat (so the padding and coils don’t settle). Lay it flat (as opposed to on its side) you should carry mattresses upright, but when it comes to placing it in your storage unit or basement, you should always lay it flat to reflect its natural positioning.