Should I Store a Mattress Flat or on Its Side During a Move?
Quick AnswerShould I store a mattress flat or on its side during a move?For anything beyond short handling, flat storage is usually the safer default because some mattresses can sag or deform when left upright for an extended period. Put the mattress in a clean protective bag, keep it dry, and follow the manufacturer’s storage instructions for your specific model. If the storage unit cannot accommodate the mattress flat, ask the manufacturer how long side storage is acceptable before assuming it is safe.
A mattress can ride on its side briefly during handling or transport, but long-term storage is a different question. The construction of the mattress determines how well it tolerates being upright.
Flat Is the Safer Default for Storage
When space allows, store the mattress flat on a clean, supported surface. This avoids concentrating the mattress weight along one edge for weeks or months.
Use a Mattress Bag
A clean mattress bag helps protect against dust, dirt and contact with storage surfaces. Make sure the mattress is dry before sealing it so you are not trapping moisture inside.
Do Not Put Heavy Items on Top
Even when stored flat, avoid stacking boxes or furniture on the mattress. Long-term pressure can compress or deform the surface.
Check the Manufacturer Before Long Side Storage
Foam, hybrid, innerspring and specialty mattresses are built differently. If the unit only allows upright storage, check the manufacturer’s current care instructions for that specific mattress rather than relying on a generic rule.
For a move that includes temporary storage, see our NYC moving and storage guide.
Storage checkpoint: If the mattress will stay stored for more than a brief transfer period, plan the storage position before the mover loads the unit.
Bottom Line
Flat storage is usually the safest default for a mattress during a storage gap. Keep it clean, dry and protected, avoid heavy items on top, and use the manufacturer’s instructions if the mattress must remain on its side for an extended period.
Frequently Asked Questions
Can movers transport a mattress on its side?
They often can for handling and transport, but storage duration is a separate issue. Check the mattress manufacturer if it will remain upright.
Should I wrap a mattress before storage?
Yes. Use a clean protective mattress bag and make sure the mattress is dry before sealing it.
Can I stack boxes on a stored mattress?
It is better not to. Long-term weight can compress or deform the mattress surface.
