How to Store a Mattress in a Storage Unit

A mattress is one of the most expensive things in the house, and one of the easiest to ruin in storage. Fold it, lean it, wrap it in the wrong plastic, or leave it in a hot garage for a summer, and it comes out sagging, smelling, or worse.

This guide covers how to store a mattress in a storage unit so it comes out the way it went in: which unit size you need, whether you need air conditioning, how to clean and bag it, how to move it without bending it, and what to do the day you take it out.

If you are storing in Saudi Arabia, WheeKeep brings the unit to your door in Jeddah and Riyadh, you fill it at your own pace, and we take it to our facility or leave it with you on site. Here is how it works.

Why a Storage Unit Is the Right Place for a Mattress

When you first think about where to put a mattress for a few months, the spare room, the garage, or the roof room comes to mind. Here is why a storage unit does the job better:

• A stable environment. A garage or roof room in Jeddah in August sits above 40 degrees with the humidity to match. Foam softens, fabric absorbs moisture, and mold gets its chance. A storage unit keeps the mattress out of the sun, the dust, and the daily traffic.
• Space at home. A mattress standing against a wall takes over a room. In a unit, it lies flat and out of the way, which is the position it should be in anyway.
• It protects the money you spent. A good mattress costs thousands of riyals. Stored flat and dry, it keeps its shape and its warranty. Stored on its side for months, it does not.
• No commitment. You store it for the weeks or months between homes, then take it out. You are not building a permanent solution for a temporary problem.

Choosing the Right Unit for a Mattress

A mattress does not need much, but it does need the right few things: enough floor to lie flat, protection from heat, and a door only you can open.

What size storage unit do you need for a mattress?

The goal is to store the mattress flat, not wedged into a corner. So the floor area of the unit matters more than the height.

• A mattress on its own, or with a folded bed base, usually goes in a Small unit.
• A mattress with its bed frame, a wardrobe, and the boxes from one bedroom usually needs a Medium.
• A full bedroom or more, or several mattresses, needs a Large. The Large has a 3.6 by 2.4 meter floor, so any standard mattress from single to king lies flat inside it with room around it.

If you are not sure, the storage space calculator works it out from a list of what you are storing. The pricing page has the full table.

Insulated or air-conditioned?

Heat is the main risk for a mattress in Saudi Arabia, more than dust or pests. Every WheeKeep unit is insulated, which keeps the inside well below the temperature of a parked van or an uninsulated garage. That is enough for a spring mattress over a few months.

For a memory foam or latex mattress, or for any mattress over a long summer in Jeddah, choose an air-conditioned unit. Foam is sensitive to sustained heat, and humidity is what turns a damp patch into mold. The air-conditioned unit costs more, but it costs far less than the mattress.

Security

Ask any storage company two questions: who can open the unit, and who is watching it. At WheeKeep the unit is locked with your own lock and you keep the only key, and our facilities in Jeddah and Riyadh are covered by cameras around the clock. If you keep the unit on site, it stays locked outside your home or business the same way. Our guide on how safe self storage is covers what to look for anywhere else.

Cost

WheeKeep units start from 599 SAR a month for a Small, 899 for a Medium, and 1,289 for a Large, with air-conditioned units at 1,999. Prices exclude VAT, and the first delivery and the first collection are free. For a mattress alone, a Small for two or three months is a small fraction of what the mattress cost.

How to Store a Mattress in a Storage Unit, Step by Step

Once the unit is booked, the preparation takes an afternoon. Most of the damage that happens in storage is decided here, before the mattress leaves the bedroom.

1. Clean it, then let it dry completely

Vacuum both sides, including the seams and the piping, where dust and dust mites collect. Treat any stain with a small amount of mild detergent in water and a cloth, working from the outside of the stain inward. Do not soak it. A wet mattress going into a bag is the most reliable way to grow mold.

Then leave it standing in a ventilated room until it is dry to the touch on both sides, and give it a few hours more than you think it needs. If it holds a smell, sprinkle baking soda over the surface, leave it for a few hours, and vacuum it off.

2. Bag it in a breathable mattress cover

Use a purpose-made mattress storage bag, or a breathable cover. It keeps dust, dirt, and insects off while letting air move, so moisture does not build up inside.

Avoid thick plastic sheeting sealed tight. It traps whatever humidity is in the room on the day you wrap it, and in a Jeddah summer that is plenty. If you must use plastic, tape it closed but leave a small opening for air.

3. Move it without bending it

With WheeKeep the unit comes to your door, so the mattress goes from the bedroom straight into the unit and never rides in a van. If you are moving it yourself, use a vehicle long enough to carry it flat or upright on its long edge, strap it so it cannot slide, and do not fold it. Folding a spring or hybrid mattress damages the structure inside, and the damage is permanent.

If it has to travel on its side, keep the trip short. A few hours upright is fine; a few weeks upright is not.

4. Lay it flat, off the floor, with nothing on top

Flat is the position a mattress is built for. Put it on pallets, a sheet of plywood, or the bed base itself, so air moves underneath and it never touches the floor.

Do not stack boxes on it. Weight on one spot for months leaves a dip that does not come back. If space is tight and it has to stand on its long edge, stand it against something flat and full height, and turn it every few weeks so it does not bow.

If the mattress is going in with the rest of a room, our guide on how to pack a self storage unit shows how to arrange everything so the heavy items sit low and the mattress keeps its space.

5. Check on it

If you kept the unit on site, look in once a month: feel the cover for damp, and look for any sign of insects. If the unit is at our facility, it is in a locked, insulated or air-conditioned box, and the checks above are what keep it safe.

Quick Tips by Mattress Type

• Memory foam. The most heat-sensitive type. Always flat, always in a breathable cover, and air-conditioned for anything longer than a few weeks in summer.
• Spring (innerspring). The most forgiving. It can stand on its long edge for short periods if it must, turned regularly.
• Hybrid. Treat it like memory foam: flat, breathable cover, and keep it cool, because the foam layers set the rules.
• Latex. Naturally resistant to dust mites and mold, but it degrades in heat and direct light. Cool, dark, and ventilated.

Taking Your Mattress Out of Storage

Take the cover off and look over both sides for damp patches, marks, or insects. Let it air for a few hours in a ventilated room, then lay it flat on its base. A mattress that stood on its edge for a while settles back over a day or two.

If it picked up a smell in storage, baking soda and a vacuum deal with it the same way as before. Cleaning it again before the first night is not a bad idea either. It has been in a bag for months, and it takes twenty minutes.

Why WheeKeep for Mattress Storage in Saudi Arabia

Most of the work in storing a mattress is moving it, and that is the part we remove. A portable storage unit is delivered to your door in Jeddah or Riyadh. You lay the mattress flat inside, add whatever else is going, and lock it with your own lock. We collect it and keep it at our facility, or you keep it on site where you can reach it.

The unit is insulated as standard and air-conditioned if you choose, so the mattress never sits in a hot van, a hot garage, or a hot roof room. When you are ready, we bring it back, or deliver it to the new address.

Final Thoughts on How to Store a Mattress in a Storage Unit

Storing a mattress well comes down to a few decisions: clean and fully dry before it goes in, a breathable cover rather than sealed plastic, flat and off the floor with nothing on top, and a unit that keeps the heat out. Get those right and the mattress you take out is the mattress you put in.

Our blog has more guides in the same spirit, on how to store furniture in a storage unit, how to store clothes, how to keep humidity away from your goods, how to keep bugs out, and what you can and cannot store.

When you are ready, book a WheeKeep unit and have it at your door, ready for the mattress, before the move.