How To Store a Mattress In The Garage: Practical FAQs and Step‑by‑Step Tips

If you’re wondering how to store a mattress in the garage without ruining it, you’re not alone. Garages are convenient storage spaces, but they can be harsh on mattresses if you don’t take a few precautions. This FAQ-style guide walks you through what to do (and what to avoid) so your mattress stays as clean and supportive as possible.

Is It Okay To Store a Mattress in the Garage?

You can store a mattress in the garage, but it’s not always ideal. Garages often have:

  • Temperature swings (hot in summer, cold in winter)
  • Higher humidity
  • Dust, pests, and odors

These conditions can damage materials over time. The key is to protect the mattress from moisture, dirt, and pressure so it remains usable when you need it again.

How To Store a Mattress In The Garage Step by Step

1. Clean and Dry the Mattress First

Before moving it to the garage:

  • Vacuum both sides to remove dust and debris.
  • Spot clean any stains with a light fabric-safe cleaner and allow to air dry completely.
  • Make sure there is no dampness left; even slight moisture can lead to odors or surface damage in a closed garage.

2. Use Proper Protection

A mattress should never go into a garage uncovered.

  • Use a breathable mattress bag or cover rather than plastic wrap that traps moisture.
  • If you only have plastic, leave small openings so air can circulate, and avoid tightly sealing damp air inside.
  • For long-term storage, consider an extra layer like an old sheet or blanket inside the bag to reduce friction and scuffs.

Should a Mattress Be Stored Flat or On Its Side?

When thinking about how to store a mattress in the garage, position is one of the most important choices.

Best Option: Flat and Fully Supported

  • Store the mattress flat, on a clean, even surface.
  • Avoid stacking heavy items on top; this can compress and deform the comfort layers.
  • If you must stack, only place light, soft items (like bedding) on top.

Storing on Its Side

Storing a mattress on its side is sometimes used when space is limited, but it has drawbacks:

  • The internal materials may shift or sag over time.
  • It’s usually better short term than long term.

If you have to store it on its side, rotate it every few weeks to change the pressure points.

Where in the Garage Should I Put the Mattress?

Choosing the right spot in the garage can make a big difference.

  • Keep the mattress off the floor using a platform, pallets, or a bed frame to avoid ground moisture.
  • Store it away from exterior walls where condensation might form.
  • Avoid areas near windows, doors, or vents where temperature and humidity change most.
  • Keep it away from chemicals, paint, fuel, or strong odors, as some smells can linger in fabrics and foam.

How Long Can I Store a Mattress in the Garage?

There’s no strict time limit, but a garage is generally better for short- to medium-term storage rather than many years.

  • A few months with good protection is usually fine.
  • For long-term storage, check the mattress periodically for dust, odors, or visible changes.
  • If your garage is especially damp or uninsulated, try to limit the duration or use extra moisture control.

How Do I Prevent Mold, Mildew, and Odors?

Humidity is one of the biggest risks when storing a mattress in the garage.

  • Keep the mattress dry and elevated.
  • Use moisture absorbers or a dehumidifier in very damp garages.
  • Allow some airflow around the mattress; don’t wrap it so tightly that it can’t breathe at all.
  • Avoid storing it right against concrete floors or walls, which can hold moisture.

Can I Roll or Fold the Mattress to Save Space?

Most mattresses are not designed to be folded once they’ve been fully expanded.

  • Folding or sharply bending can damage internal materials and leave permanent creases.
  • Rolling is sometimes used for certain types of foam, but doing this manually for storage can still cause stress to the structure.

If the mattress originally came rolled from the manufacturer, it was compressed under controlled conditions. Recreating that at home is usually not recommended.

How Should I Prepare the Mattress When I Need It Again?

When you’re ready to use the mattress:

  1. Unbag it and let it air out in a clean, dry room.
  2. Check for visible issues: stains, warping, surface lumps, or strong odors.
  3. Lightly vacuum it again.
  4. If it looks and feels normal, you can put on a protector and bedding and resume regular use.

✅ Quick Mattress Takeaways

Key points about how to store a mattress in the garage

  • Clean and dry first: Never store a damp or dirty mattress.
  • Use a protective cover: Prefer a breathable bag or cover, not just bare plastic.
  • Keep it flat and supported: Flat storage, off the floor, with no heavy items on top.
  • Watch for moisture: Elevate the mattress, avoid exterior walls, and manage humidity.
  • Limit storage time: Garages are better for shorter storage periods than for many years.
  • Check before reuse: Air it out, inspect for damage or odors, and vacuum before sleeping on it.

With a bit of planning, you can store a mattress in the garage while greatly reducing the risk of damage, so it’s ready when you need it again.