How Do You Store a Mattress? Simple Steps for Long-Term Care

If you’re asking “How do you store a mattress?”, you’re likely between homes, redecorating, or saving a guest bed for later. Proper storage isn’t just about finding space—it’s about protecting the mattress from damage, odors, and sagging so it’s still comfortable when you use it again.

This guide answers the most common questions about mattress storage and explains how to do it safely.

Why Does Proper Mattress Storage Matter?

A mattress is made of layers of foam, fabric, and springs or support cores that can be affected by:

Moisture and humidity
Dust, dirt, and pests
Pressure and bending over time

Storing a mattress incorrectly can lead to permanent sagging, mold, or structural damage. A bit of preparation and the right position can help you avoid all of that.

How Do You Store a Mattress Step by Step?

1. Clean the Mattress First

Before storing, start with a clean, dry mattress:

Remove all bedding and mattress protectors.
Vacuum the surface slowly with an upholstery attachment.
Spot-clean any visible stains with a mild cleaner and let them dry completely.

Never store a damp mattress. Trapped moisture can lead to odors and mildew.

2. Use a Protective Cover

A breathable mattress bag or cover helps shield against dust and dirt.

Choose a cover that fits the mattress size (twin, queen, etc.).
Avoid completely airtight plastic for very long storage in humid areas, as it can trap moisture.
Seal or tape the opening to prevent pests or debris from getting in.

Protection is especially important in garages, storage units, or basements.

3. Store the Mattress Flat Whenever Possible

One of the most important parts of answering “How do you store a mattress?” is the position.

Best: Lay the mattress flat on an even surface (such as a platform, pallet, or boards).
Avoid stacking heavy items on top, which can cause dents or impressions.

Storing flat helps keep the internal support system aligned, whether it’s springs, foam, or another material.

4. Can You Store a Mattress Upright?

This is a common question, especially when space is limited.

Short term (a few days to a couple of weeks): Storing a mattress upright on its side is usually acceptable for moving or temporary situations.
Long term (months or more): Storing upright can allow the materials inside to shift or sag, especially in the middle.

If you must store it upright:

Place it against a solid wall.
Rotate or gently reposition it from time to time to reduce pressure on one area.
Make sure it’s fully supported and not bowed in the middle.

5. Choose the Right Storage Environment

Where you store your mattress is just as important as how.

Look for a place that is:

Cool and dry – avoid extreme heat, damp basements, or areas prone to leaks.
Well-ventilated – some air movement helps prevent stale smells.
Off the ground – using pallets or a platform keeps it away from possible spills or condensation.

Avoid placing a mattress directly on concrete floors, which can hold moisture.

6. How Long Can You Store a Mattress?

There’s no exact limit, but the longer you store a mattress, the more important proper conditions become.

For extended storage:

Keep it flat, covered, and dry.
Check on it occasionally for signs of moisture or damage.
Gently air it out if the storage space feels stuffy.

When you’re ready to use it again, remove the cover and let the mattress air out for several hours before putting on new bedding.

Common Mistakes to Avoid When Storing a Mattress

Some habits can shorten the life of a stored mattress:

Folding or bending the mattress (unless it is specifically designed to fold)
Placing heavy boxes or furniture on top
Leaving it uncovered in a dusty or dirty area
Storing it in a damp garage, shed, or basement without protection

Avoiding these mistakes keeps the mattress closer to its original comfort and support.

✅ Quick Mattress Takeaways

Key points consumers should understand about “How Do You Store a Mattress”

Clean and dry first: Vacuum, spot-clean, and ensure the mattress is completely dry.
Always use a cover: A protective, preferably breathable bag helps keep out dust and dirt.
Flat is best: For long-term storage, store the mattress flat on a supportive surface.
Limit upright storage: Storing on its side is better kept short-term and well-supported.
Control the environment: A cool, dry, ventilated space, preferably off the floor, protects the materials.
Avoid pressure and bending: No folding and no heavy items stacked on top.
Air it out before reuse: After storage, uncover the mattress and let it breathe before sleeping on it.

Knowing how do you store a mattress properly helps preserve its feel and structure, so when you bring it back into your bedroom, it’s ready to provide the same comfort and support you’re used to. With a bit of preparation and the right conditions, a stored mattress can remain in good shape for whenever you need it again.