Mattresses are large, floppy, and surprisingly fragile. Bending a spring mattress permanently warps the coils; storing foam in a humid basement grows mold; leaving one uncovered in a moving truck invites stains and bed bugs. Here is how to move or store a mattress so it stays usable.
BEFORE YOU MOVE. Strip all bedding and vacuum the surface with an upholstery attachment. Spot-clean any stains and let the mattress dry completely — trapped moisture turns into mildew in a plastic bag. Remove any detachable toppers or pads and move them separately.
BAG THE MATTRESS. A heavy-duty mattress bag ($10–$25) is the cheapest insurance against dirt, rain, and tears. Tape the open end shut with packing tape. For long-term storage or cross-country moves, use a zippered mattress encasement instead of a thin disposable bag.
MOVING A MATTRESS BY CAR. Strap the mattress to a roof rack only as a last resort — wind can tear the cover and warp foam. If you must roof-carry, wrap it in a tarp, pad the rails, and keep speed under 55 mph. Better options: rent a cargo van, pickup with a covered cap, or a moving truck where the mattress can lie flat against the wall.
POSITION MATTERS. The best position for any mattress is flat, face-up, with nothing heavy on top. If space forces you to lean it on its side, keep it straight — never folded or creased. Innerspring and hybrid mattresses should not be bent more than 10–15 degrees. Foam mattresses can flex slightly more but should still not be folded for more than a few minutes.
WHAT NEVER TO DO. Do not fold a mattress in half to fit it around a stair landing — this kinks coils and cracks foam. Do not tie it to the top of a sedan. Do not drag it across pavement. Do not stack boxes or furniture on top of it during the move; concentrated weight creates permanent indentations.
SHORT-TERM STORAGE (UNDER 3 MONTHS). Keep the mattress flat in a clean, dry room. Prop it on its side only if you cannot lay it flat, and rotate it every 30 days so gravity does not compress one edge. Leave the bag slightly vented or open a corner so moisture does not build up.
LONG-TERM STORAGE (3+ MONTHS). Choose climate-controlled storage. Aim for 55–75°F and 30–50% relative humidity. Lay the mattress flat on a pallet or raised platform — never directly on concrete, which wicks moisture. Remove bedding and use a breathable cotton cover or loosely sealed mattress bag; completely airtight plastic can trap condensation. Check on it every 3–6 months.
STORING MEMORY FOAM VS. LATEX VS. INNERSPRING. Memory foam is the most vulnerable to humidity and heat — avoid attics and garages. Natural latex is more resilient but can develop permanent creases if folded. Innerspring mattresses are the heaviest and most awkward, and bending them can pop coils through the fabric.
WHEN TO REPLACE INSTEAD. If a mattress has been stored in a damp basement for over a year, folded for transport, or exposed to a leaking truck, inspect it carefully before sleeping on it. Musty odor, visible mold, permanent creases, or exposed coils mean it is time to replace.