How to Store a Mattress Without Damaging It

Storing a mattress carefully helps protect it from moisture, dust, pests, odors, and shape changes while it is out of use. Before you begin, check the mattress care label or manufacturer’s instructions: materials and construction differ, and some warranties specify how the mattress may be handled or stored. Plan to keep it flat if possible, with a clean, level surface large enough to support it.

What You’ll Need

A vacuum cleaner with an upholstery attachment
A clean, dry cloth and mild detergent for small marks, if needed
A mattress storage bag or breathable mattress cover sized to fit
Packing tape or the bag’s closure, used without pulling tightly around the mattress
A clean, flat platform, such as a bed frame, pallet, or storage unit floor that is dry and raised off the ground
Help from another person for lifting and moving a large mattress

Step-by-Step

Check the care instructions. Look for guidance on cleaning, lifting, and storage position. Foam, hybrid, and innerspring mattresses can have different handling limits. Do not fold, bend, or compress a mattress unless its manufacturer specifically says that method is safe; bending can damage internal layers, coils, seams, or foam.
Choose a suitable storage spot. Use an indoor area that stays dry and has reasonably stable temperatures, such as a clean spare room or climate-controlled storage space. Avoid damp basements, garages prone to condensation, sheds, and places exposed to leaks, direct sun, or large temperature swings. Keep the mattress away from chemicals, fuel, paint, and strong-smelling materials.
Strip and inspect the mattress. Remove sheets, protectors, and bedding. Check both sides and the seams for marks, dampness, or signs of pests. If you find an issue that needs more than routine cleaning, address it before storage rather than sealing it inside a cover.
Clean it gently. Vacuum the top, bottom, sides, and seams using an upholstery attachment. For a small spot, follow the manufacturer’s cleaning instructions; use as little moisture as possible and avoid soaking the material. Do not apply bleach, solvents, or a strong fragrance unless the care instructions allow it.
Let it dry completely. If you used any moisture, allow the mattress to air-dry fully in a well-ventilated area before wrapping. Check seams and any treated spot as well as the surface. Trapping even slight dampness can encourage mildew and musty odors. Do not use intense heat to speed drying unless the manufacturer permits it.
Put on a protective cover. Slide the dry mattress into a mattress storage bag or breathable cover made for its size. Close the opening securely against dust and pests, but do not wrap it so tightly that the mattress is compressed. Avoid using plastic sheeting directly against the mattress for long-term storage where condensation could form; if a plastic bag is the only option, the mattress must be completely dry and the storage area must remain dry.
Move it with support. Get help with a heavy or bulky mattress. Lift from its edges and keep it supported rather than dragging it across the floor, which can tear the cover or strain seams. Do not use handles to carry the entire weight unless the manufacturer says they are designed for that purpose.
Lay it flat and support it evenly. Place it horizontally on a clean, dry, level surface that supports its full length and width. A slatted frame may be suitable if the manufacturer’s guidance permits it and the gaps do not leave areas unsupported. Keep the mattress off a concrete floor, which can be cool and damp; use a dry platform or pallet, not a surface with sharp edges or protruding nails.
Keep the area clear and check periodically. Do not pile boxes or other heavy items on top. Leave room for air circulation and avoid stacking mattresses. Check the storage space occasionally for leaks, dampness, pests, or a damaged cover, and act promptly if you find a problem.
Prepare it before use again. Bring the mattress into a clean, ventilated room and remove the cover. Let it air out and return to its normal shape if needed, following the manufacturer’s directions. Inspect it for moisture, odors, or damage before putting on clean bedding.

Common Mistakes

Storing it on its side for a long time: Some mattresses may sag or shift when stored upright, especially if their construction is not designed for that position. Flat storage is the safer general choice; use an upright position only if the manufacturer approves it.
Wrapping it while damp: A cover can trap moisture and lead to mildew or persistent odor. Wait until every area is fully dry.
Leaving it on the floor: Floors can expose a mattress to spills, dust, and moisture. Raise it on a clean, stable platform.
Compressing, folding, or strapping it tightly: This may permanently alter the mattress or damage its structure. Do not assume that a mattress can be vacuum-packed just because it arrived compressed when new.
Using an airtight cover in a humid location: A sealed layer may trap condensation. Choose a suitable mattress cover and, more importantly, a dry storage area.
Stacking heavy items on top: Long-term pressure can deform cushioning or other internal parts. Keep the top clear.

Tips

Label the cover with the mattress size and which side faces up, if that information will help when retrieving it.
Keep the manufacturer’s care instructions somewhere accessible rather than inside a tightly sealed storage bag.
Store a mattress away from windows, exterior walls with signs of damp, and areas where water pipes or appliances could leak.
If the mattress must be moved through a narrow doorway, check its handling instructions before bending it. Getting a second person to guide and support it is safer than forcing it through.
Use a clean, dry cover; a used cover can transfer dirt, odors, or pests.

Troubleshooting

The storage space feels damp or smells musty: Move the mattress to a drier indoor location. Check the cover and mattress for moisture, then air them out separately. Do not reseal the mattress until it is fully dry. If you see visible mildew or the odor remains, consult the manufacturer about appropriate cleaning rather than masking the smell.

The mattress was stored standing up: Lay it flat on an evenly supportive surface as soon as practical. Check whether it looks uneven or has changed shape, and follow the manufacturer’s advice before using it. A mattress that remains distorted may need professional guidance or replacement.

The cover has torn or come open: Inspect the mattress for dust, pests, and moisture. Replace the cover with a clean one, and verify that the storage area is still dry. Do not tape a damaged cover so tightly that it compresses the mattress.

You cannot fit it flat in the available space: Look for another storage location or ask the manufacturer whether a temporary upright position is acceptable for that model. Avoid folding or forcing it into a smaller space; a tight fit can damage its shape or materials.

The mattress smells odd after storage: Remove its cover and air the mattress in a clean, dry, ventilated room. Check for dampness or visible contamination. Follow the care label for any cleaning, and do not sleep on it if you suspect mold or another problem that cannot be safely resolved by routine cleaning.

Frequently Asked Questions

Can you store a mattress upright?

Some mattresses can tolerate a short period upright, but prolonged vertical storage may cause sagging or internal shifting. Store it flat unless the manufacturer specifically approves another position.

Can you store a mattress in a plastic bag?

A mattress storage bag can protect against dust, but moisture must not be trapped inside. Ensure the mattress is completely dry and the storage space stays dry; for long-term storage, use a cover suited to the mattress and conditions.

Can you put a mattress in a garage or basement?

Only if the space is clean and reliably dry, with no leaks, condensation, pests, or strong temperature swings. Many garages and basements are too damp or variable for safe long-term storage.

Can you stack mattresses in storage?

Avoid stacking them, particularly with heavy objects on top. Store each mattress flat on a supportive surface with its top clear, unless the manufacturer gives different instructions.

Should you vacuum-seal a mattress?

Do not vacuum-seal or compress a mattress unless its manufacturer explicitly permits it. Compression can damage materials, and a mattress that was factory-compressed is not necessarily safe to compress again.

How long can a mattress stay in storage?

There is no universal time limit; it depends on the mattress and storage conditions. Follow the manufacturer’s guidance and inspect the space and cover periodically, especially during long-term storage.

Further reading: Sleep Foundation. Details can change, so check the official page for anything that matters to you. Spotted a mistake? Tell us. How we write an answer.