Futon Care 101: How to Clean, Store & Maintain Your Japanese Futon

A well-maintained Japanese futon can last 7–10 years. A poorly maintained one begins to lose its freshness and structure within months. The good news is that caring for a modern foam futon is simpler than caring for a traditional cotton shikibuton — especially when it has a removable, machine-washable cover like the Zen.Rest futon.

This guide covers daily habits, weekly routines, monthly maintenance, and long-term storage — everything you need to keep your futon performing at its best.

Understanding Why Futon Care Matters

Every night, a sleeping adult produces approximately 200–500 ml of perspiration. This moisture is absorbed by the bedding layers and, if not addressed, penetrates into the foam core of the mattress. Accumulated moisture creates ideal conditions for mould, mildew, and dust mite proliferation.

The three main goals of futon care are:

1. Moisture management — preventing humidity from building up in the foam core
2. Hygiene — removing allergens, skin cells, and bacteria from the sleeping surface
3. Shape preservation — preventing permanent compression of the foam layers

Daily Care: The Morning Roll

The single most effective thing you can do for your futon is the same thing Japanese households have done for centuries: roll it up each morning and air it before storing.

The Routine

1. Remove your duvet and pillow from the futon
2. Roll the futon from one end (lengthwise) and stand it vertically against a wall
3. Leave it standing for 20–30 minutes to allow moisture from the night to evaporate
4. Roll up and store in the included storage bag, or leave rolled against the wall if your room allows

If time is short, even 10 minutes of standing ventilation makes a meaningful difference. The key is not to fold the futon flat and slide it under a bed immediately — trapped moisture is the enemy of foam longevity.

Weather and Seasonal Tips

In summer, if possible, stand the futon near an open window to allow air circulation. In humid European climates (particularly coastal areas or basement apartments), consider placing a silica gel dehumidifying sachet inside the storage bag when the futon is stored for extended periods.

Weekly Care: Airing and Rotation

Airing Outdoors

Traditional Japanese practice involves hanging the futon over a railing or fence in direct sunlight 1–2 times per week. UV light kills bacteria and dust mites, while warm dry air purges accumulated moisture. In many Japanese neighbourhoods, rows of futon airing on balcony railings are a familiar sight.

In European apartments where outdoor airing isn't practical, the equivalent is placing the futon near an open balcony door or window on a dry, sunny day. Even 1–2 hours of good airflow provides meaningful benefits.

Rotation

Rotate your futon 180° once a week — head to foot. This distributes body weight compression evenly across the foam layers, preventing the formation of permanent body impressions in the foam. A futon that is never rotated will develop a dip in the area where your hips sleep within a few months.

Washing the Cover

The Zen.Rest futon cover is removable via a zip closure and machine washable. This is one of the most practical advantages of a modern foam futon over traditional cotton shikibuton, which required professional cleaning or careful hand-washing.

Washing Instructions

• Temperature: 40°C maximum (higher temperatures can cause shrinkage or damage the fabric)
• Cycle: Gentle/delicate cycle
• Detergent: Mild liquid detergent — avoid biological/enzyme detergents that can break down fabric fibres over time
• Bleach: Do not use chlorine bleach
• Drying: Air dry flat or hang to dry — tumble drying on high heat is not recommended

How Often to Wash

Wash the cover every 2–4 weeks under normal use. More frequently if you sleep without a sheet directly on the cover, if you sweat heavily, or during hot summer months. If you use a fitted sheet over the futon (recommended), the cover can be washed less frequently — every 4–6 weeks.

Cleaning the Foam Core

The foam core itself should never be submerged in water or put in a washing machine. Foam that is fully saturated with water takes days to dry completely, and incomplete drying leads to mould growth inside the core.

Spot Cleaning

For spills or stains on the foam core:

1. Blot (do not rub) the stain immediately with a clean, dry cloth to absorb excess liquid
2. Mix a small amount of mild dish soap with cold water
3. Apply sparingly to the stained area with a damp cloth, working from the outside of the stain inward
4. Wipe clean with a damp cloth (cold water only)
5. Allow to air dry completely — at least 4–6 hours — before replacing the cover and using the futon

Odour Removal

If the foam develops a mild odour, sprinkle baking soda (bicarbonate of soda) lightly over the surface of the core, leave for 2–4 hours, then vacuum thoroughly with an upholstery attachment. Baking soda is an effective, non-toxic odour neutraliser that is safe for all foam types.

Long-Term Storage

If you're storing your futon for an extended period — over 2 weeks — follow these steps:

1. Wash the cover and allow it to dry completely before reassembling
2. Air the foam core for at least 2 hours before rolling
3. Roll the futon firmly and place in the storage bag
4. Store in a cool, dry location — avoid damp basements, hot attics, or anywhere with direct prolonged sunlight on the bag
5. Do not place heavy objects on top of the stored futon, as this can cause permanent compression of the foam

Dealing With Dust Mites

Dust mites are microscopic organisms that feed on shed human skin cells. They thrive in warm, humid environments — which is exactly what a mattress can become if not properly maintained. The good news: the practices already described (daily airing, weekly outdoor sunning, regular cover washing) are the most effective interventions available.

For those with dust mite allergies:

• Use an allergen-barrier fitted sheet beneath your regular sheet
• Wash bedding at 60°C (sheets and pillowcases can typically tolerate higher temperatures than the futon cover)
• Air the futon outdoors in direct sunlight — UV light is lethal to dust mites — as often as practical

When to Replace Your Futon

Signs that your futon has reached the end of its useful life:

• Permanent body impressions that do not recover after airing and rotation
• Persistent odour that does not resolve after cleaning
• Cover fabric that is worn through or structurally compromised
• Waking with back pain that didn't exist when the futon was new

A well-maintained Zen.Rest futon should not show any of these signs for at least 5–7 years under normal use.

For everything else you need to know about living with a Japanese futon, start with our complete beginner's guide to Japanese futons.