Bathroom storage: what to put on surfaces, hang, and hide
Lucas Morel
Key takeaways
- Storage should be thought of in terms of vertical volume, not floor space.
- A 30 cm wide column offers more usable volume than a cabinet 20 cm wider.
- Drawers beat doors: easy access to the back without bending, no clearance needed.
- Items sensitive to humidity should not be stored under the sink or above the shower.
Bathroom storage falls into three categories: items placed on the counter, items hung on the wall, and items hidden behind a door. The rule that dictates everything is frequency of use, not object size.
A cluttered bathroom is rarely due to lack of space. It's because the available storage is poorly distributed: all the volume is concentrated under the sink, the dampest and least accessible spot in the room. Here you'll find the four types of storage furniture, the calculation comparing a column to a wide cabinet, and what should never be stored in a wet room.
What are the types of bathroom storage furniture?
Four categories cover all needs. Each has its volume, footprint, and natural location.
| Furniture | Footprint | Usable volume | What it holds |
|---|---|---|---|
| Under-sink cabinet | 60 to 120 cm wide on the floor | Medium, reduced by the siphon | Cleaning products, reserves |
| Storage column | 30 to 40 cm wide | Highest for the smallest footprint | Towels, reserves, products |
| Medicine cabinet | No floor space, 12 to 16 cm deep | Small but very accessible | Daily toiletries, medicines |
| Wall shelf | No floor space, 15 to 25 cm deep | Open, decorative | Items used often and visible |
The under-sink cabinet is the first item people buy and the most disappointing. Its theoretical volume is reduced by the siphon, which passes through the cabinet from top to bottom. Expect a 30 to 40% loss on a drawer model if you haven't planned for an offset or space-saving siphon.
The column, the calculation no one makes
This is the most cost-effective trade-off for a small bathroom, and it can be demonstrated with three figures.
80 cm wide cabinet: 80 x 45 cm on the floor, usable height 60 cm, or about 216 liters.
60 cm cabinet plus 30 cm column: same total wall width, but 162 liters under the sink plus 300 liters in the column.
Difference: more than double the volume, for the same length of wall occupied.
A column utilizes height, which no one uses, rather than width, which everyone lacks. It is also the only storage that remains accessible when the under-sink cabinet is ruled out due to accessibility constraints.
Soap dish, dispenser, toilet brush holder, coat hooks and hooks, with several drill-free models. Enough to free up the countertop without drilling new tiles.
See bathroom accessoriesHow to optimize space in a bathroom
Below 5 m², five rules are sufficient. They are cumulative.
- Go up before going wide. A 30 cm wide column offers more usable volume than a cabinet 20 cm wider, for three times less floor space.
- Reduce depth before width. A 35 cm cabinet instead of 50 cm frees up 15 cm of circulation, which changes everything in a hallway.
- Hang what can be hung. The visible floor under a cabinet visually enlarges the room and facilitates cleaning.
- Prefer drawers to doors. A drawer allows access to the back without bending and requires no clearance in front.
- Utilize the back of the door. This is the only surface in a bathroom that never holds anything.
The rule of three zones
- Daily zone, between 90 and 150 cm in height, within direct reach: toothbrush, facial care, razor.
- Weekly zone, below 90 cm or above 150 cm: clean towels, spare products.
- Rare zone, at the very top or very bottom: reserves, cleaning products, toiletry bag.
A poorly zoned item is an item that ends up on the vanity. This is the true mechanism of clutter.
What goes on the counter, what hangs, what hides
The distribution is decided based on two criteria: how often you use the item, and whether it can withstand humidity and light.
What goes on the counter
Only items used several times a day, and nothing else. A soap dispenser, a toothbrush holder, possibly a small dish. A maximum of three items on a 60 cm counter, five on a 120 cm counter.
Every item placed creates a contour to clean around. This is where limescale accumulates first, and it's what gives the impression of a bathroom that's never clean. The dispenser is precisely the one that benefits most from being wall-mounted, as explained in our guide on wall-mounted or freestanding soap dispensers.
What to hang
Everything that needs to dry, and everything that benefits from freeing up counter space. Towels on a rail or hook, the toilet brush on its wall mount, the dispenser mounted on the wall.
Allow a minimum of 20 cm between two hanging points, otherwise textiles will touch and not dry. And 5 to 8 cm between a bar and the wall for air to circulate behind the towel.
What to hide
Medicines, cleaning products, reserves, and anything sensitive to light. A medicine cabinet is the best place for daily toiletries: enclosed, at eye level, with no floor space taken up.
What doesn't belong in a bathroom
Medicines are sensitive to heat and humidity, and a bathroom has both. A bedroom closet is a much better place for the medicine cabinet, except for everyday items. The same goes for makeup products, whose textures degrade faster in a humid room, and for spare linens stored for a long time, which can develop a musty smell.
Which shelf resists humidity
The material of the storage unit determines its lifespan more than its brand. In a room where the air is saturated several times a day, not all materials are equal.
| Material | Durability | Caution point |
|---|---|---|
| Water-repellent MDF | Good if edges are sealed | Market standard, everything depends on the edges |
| Bamboo | Very good, naturally high density | None, it's the best wood for humid rooms |
| Stainless steel 304 | Excellent, impervious to corrosion | Scratches with abrasive materials |
| Tempered glass | Excellent, no porosity | Shows water marks, breaks on impact |
| Untreated particle board | Poor | Avoid, it swells in one season |
The weak point is never the panel, it's the edges. A water-repellent MDF cabinet holds up perfectly as long as the edge banding is properly sealed. It's through a poorly sealed edge, often on the back or bottom of a door, that water penetrates and causes the panel to swell from the inside. Swelling is irreversible.
A complete comparison of wood species, and how to treat a raw edge, are detailed in our guide on wood bathroom furniture.
What styles of storage furniture exist
Three dominant styles exist, primarily distinguished by their facade.
- The clean line, without apparent handles, opening by groove or push-to-open. This style ages best because it doesn't date.
- The fluted facade, with a vertical relief that catches the light. Warmer, very popular in oak and bamboo.
- Open storage, visible niches and shelves. It visually lightens the space but requires actual tidiness, as everything is on display.
In terms of colors, white remains the best seller because it makes a room feel larger, but wood tones and muted colors are gaining ground. They break up the clinical effect of an all-white bathroom without making the room dark.
How to choose a storage unit
Four criteria, in this order. The third is often forgotten.
- Measure the free wall length, excluding doors and windows, and subtract 10 cm of clearance on each side.
- Allow 70 cm of clearance in front to stand and open a drawer.
- Check door swing. A medicine cabinet door hitting the wall or another door makes the cabinet unusable.
- Choose the material and finish, last, once the first three constraints are resolved.
Mounting height follows its own rules, which differ depending on whether it's an under-sink cabinet, a column, or a medicine cabinet. These are detailed in our guide on bathroom cabinet height.
The case of the medicine cabinet deserves a separate note: it combines closed storage and a mirror, sometimes illuminated and with an integrated outlet. The choice of light temperature and connection are covered in our guide on LED bathroom mirrors.
Installing wall storage safely
A loaded storage unit exerts a pulling force on its fixings, not just a simple vertical load. This is the number one cause of shelves falling.
- Locate conduits and pipes before drilling, especially above a water source.
- Use appropriate anchors for the support: metal expansion for solid walls, hollow wall anchors for concrete blocks, toggle anchors for plasterboard.
- Replace the plastic anchors provided in the box; they are almost always undersized.
- Calculate the real weight: the furniture, plus what you store inside, plus the water absorbed by towels.
- Drill with a ceramic drill bit on rotation only for tiles, never with percussion.
Frequently Asked Questions
What are the types of bathroom storage furniture?
Four categories: the under-sink cabinet, the 30 to 40 cm wide storage column, the medicine cabinet that combines mirror and closed volume, and the open wall shelf. Each has its footprint and natural location.
How to organize a small bathroom?
Go up instead of out, reduce the depth of the cabinet before its width, hang what can be hung, prefer drawers over doors, and utilize the back of the door. These five rules are cumulative.
How to optimize space in my bathroom?
Divide storage into three zones according to frequency of use: daily between 90 and 150 cm within direct reach, weekly below or above, and rare at the very top or very bottom. A poorly zoned item ends up on the countertop.
Which shelf resists humidity?
Bamboo is the best wood for humid rooms thanks to its natural density. Stainless steel 304 and tempered glass are impervious. Water-repellent MDF holds up well provided the edges are sealed. Untreated particle board swells within a season.
How to choose a bathroom storage unit?
Measure the free wall length minus 10 cm on each side, allow 70 cm of clearance in front, check door swing, then choose the material. The first three constraints eliminate most models.
What styles of storage furniture exist?
The sleek line without visible handles, which ages best. The fluted facade with vertical relief, which is warmer. And open storage with niches, which visually lightens the space but requires real tidiness as everything is visible.
Is a column better than a wide cabinet?
Yes, almost always. A 60 cm cabinet plus a 30 cm column offers more than double the volume of an 80 cm cabinet, for the same wall length occupied. The column utilizes height, which no one uses.
Can medicines be stored in the bathroom?
It's best to avoid it. Medicines are sensitive to heat and humidity, and a bathroom has both several times a day. A bedroom closet is more suitable, except for items used daily.
Conclusion
Completely clear your countertop and place everything on the floor. Then, pick up items one by one, asking yourself how often you actually use them. Items not used daily have no business being on the counter. This exercise best reveals what storage you truly need, and it costs nothing.
Freelance writer, he writes the technical guides for the Aeraly blog and covers topics of layout, installation dimensions, and material durability in wet rooms.
September 2026