How To Store a Mattress: Simple Steps to Keep It in Good Shape

If you’re wondering how to store a mattress without ruining its comfort or shortening its lifespan, you’re not alone. Whether you’re moving, renovating, or simply not using a bed for a while, proper storage can make the difference between a mattress that feels fresh and one that sags, smells, or harbors damage.

This FAQ-style guide explains how to store a mattress correctly, why it matters, and what to avoid.

Why Does Proper Mattress Storage Matter?

A mattress is built from layers of foam, fabric, and sometimes springs. These materials can be affected by:

Pressure (from bending, folding, or stacking)
Moisture (which can lead to mold or odors)
Dust and pests (which can settle into the fabric)

Storing a mattress the wrong way can lead to permanent sagging, lumps, and stains, even if it was in good condition before storage. A little preparation before you put it away helps preserve both comfort and cleanliness.

How To Store a Mattress: Step-by-Step

1. How should I clean a mattress before storing it?

Always start with a clean, dry surface.

Strip all bedding: Remove sheets, protectors, and toppers.
Vacuum the surface: Use an upholstery attachment to remove dust, hair, and crumbs.
Spot-clean stains gently: Use a mild cleaner and a lightly damp cloth, then blot dry. Avoid soaking the mattress.
Let it air out completely: Allow several hours in a well-ventilated room. The mattress should be fully dry before you cover it.

Storing a damp mattress is one of the most common mistakes, as it can trap moisture and create a musty smell over time.

2. Should a mattress be stored flat or on its side?

For most mattress types, storing it flat is the safest option.

Flat on a solid, level surface: This helps maintain the internal structure and prevents bending or warping.
Avoid leaning it on its side for long periods: Many mattresses are not designed to support their weight sideways and may develop sagging or shifting inside.

If space is limited and you must store it on its side, do so only temporarily and make sure it is not bowing or bending.

3. Can I fold or bend a mattress for storage?

In general, do not fold or sharply bend a mattress unless the manufacturer specifically states it is designed to do so.

Folding can damage coils, tear internal materials, or create permanent creases.
Even flexible foam mattresses can lose their shape if tightly rolled or folded for long-term storage.

If you received your mattress compressed and rolled when new, that packaging is intended for short-term shipping, not long-term storage. Once expanded, it usually should not be re-compressed.

What Should I Use to Cover a Mattress in Storage?

4. Is a plastic bag enough?

A cover is essential when thinking about how to store a mattress securely.

Better approach:

Use a breathable mattress storage bag or cover if possible.
Look for something that protects against dust while still allowing airflow.

If you use plastic:

Choose a thick, durable plastic bag made for mattresses.
Do not seal it completely airtight for long-term storage. Trapped moisture can cause condensation.
Consider leaving small ventilation openings to reduce the risk of dampness while still blocking most dust.

Avoid wrapping your mattress in multiple tight plastic layers, which can cause heat and moisture buildup.

Where Is the Best Place To Store a Mattress?

5. Can I store a mattress in a garage, basement, or attic?

The ideal place to store a mattress is:

Indoors, in a space with relatively stable temperature
Dry, with low risk of leaks or condensation
Clean and elevated, away from direct contact with the floor

Common locations and what to consider:

Garage: May have fluctuating temperatures and humidity. If this is your only option, elevate the mattress on a platform and use a protective cover.
Basement: Often more humid, so extra care is needed. Use a dehumidified area if possible and keep it well off the ground.
Attic: Can be very hot or cold depending on the season. Extreme temperatures can be hard on mattress materials over time.

Wherever you store it, keep it away from sharp objects, heavy items, and direct sunlight that could damage covers and fabrics.

How Long Can a Mattress Stay in Storage?

6. Is long-term mattress storage okay?

A mattress can be stored for an extended period, but:

The longer it’s stored, the more important proper conditions become.
Check it every few months if accessible: look for signs of moisture, dust, or pests.
Gently air it out when possible by briefly removing or opening the cover in a clean, dry space.

When you’re ready to use it again, allow the mattress to air out for a few hours before making the bed.

What Should I Avoid When Storing a Mattress?

Common mistakes include:

Storing it directly on the floor (risk of moisture and dirt)
Stacking heavy boxes or furniture on top (can cause indentations)
Keeping it in a damp or musty area
Folding, twisting, or tightly strapping it for long periods

Being mindful of these points will help the mattress feel much closer to its original condition when you bring it back into use.

✅ Quick Mattress Takeaways

Key points consumers should understand about How To Store a Mattress

Clean and dry first: Vacuum, spot-clean lightly, and ensure the mattress is completely dry before storage.
Store flat when possible: A flat, level surface helps protect the internal structure.
Avoid folding or bending: This can cause permanent damage to springs and foam.
Use a protective cover: Prefer a breathable cover; if using plastic, avoid sealing it too tightly.
Choose a dry, stable environment: Indoors, elevated off the floor, away from extreme temperatures and moisture.
Don’t stack heavy items on top: Extra weight can create lasting impressions and sagging.
Check periodically during long-term storage: Look out for dampness, odors, or visible damage.

With a bit of preparation and the right environment, understanding how to store a mattress helps keep it supportive, cleaner, and more comfortable for when you’re ready to sleep on it again.