The renter's bathroom refresh: storage, cover-ups and mould control with no building work

The most soul-destroying bathroom I ever rented was one of those old-flat three-in-ones: toilet, basin and shower crammed into barely two square metres, no screen or separation of any kind, so the whole room flooded every time I showered. The grout ran black in patches, the silicone was furred with mould, and there was a rusted rack the previous tenant had left on the wall that I couldn't tell whether I was allowed to take down.

The bathroom is the room renters least dare to touch — water, wiring, tiling, all off-limits. But the three things that actually make a rental bathroom miserable — it's ugly, it's damp, there's nowhere to put anything — can every one be fixed the no-building-work, takes-it-with-you way. This note is everything I've tried that actually worked, pulled into one method, with the weight on the part that most affects both your health and your deposit: mould control.

Name the three pains first

A rental bathroom you don't want to linger in usually comes down to three things — treat each one on its own terms:

• Ugly. Dated tile colours, yellowed fittings, a rainbow of mismatched bottles. This is a visual problem; you solve it with textiles and "making things match".
• Damp and mouldy. No wet-dry separation, poor ventilation, a floor that never dries and black mould in every joint. This is the one to prioritise, because it hits your health and your deposit at the same time.
• No storage. One basin, no cupboard, nowhere to put anything. This is what no-drill storage is for.

None of the three needs a plumber or a tiler. The order I'd work in is damp first — it's the one that compounds and quietly costs you money — then storage so the room actually functions, then the cover-ups that make it somewhere you don't mind being. If the mould is already bad, though, don't wait your turn: start there today.

No-drill storage: stick it where it'll hold

In a bathroom the floor is wet and the counter is tiny, so almost all your storage has to go up — onto the walls, the back of the door, and the dead space above the toilet. The biggest problem with bathroom storage isn't that there's nothing to buy — it's that the rack you bought keeps falling off. The trick is understanding how each option actually grips or sticks:

• Tension rod + baskets. Braced between the two walls above the toilet or beside the basin, it holds towels and hanging baskets of supplies. It's the best-value move in a bathroom, and it works on the same principle as the rod in the window-treatments note.
• Suction cups. They only grip a fully smooth surface — flat glossy tile, glass, a mirror. On grout lines, matte or textured tile, or silicone, they will always fall off. This is the mistake most people make.
• Damage-free adhesive shelves. Steadier under weight than suction cups, but you have to pick a waterproof range, stick them to dry, smooth tile, and wipe the surface clean and dry first.
• Over-door hooks. Hooked over the top edge of the door, no drilling, for a bathrobe or towels — using the vertical space you already have.

Cover-ups: the magic of one shower curtain

If you only change one thing, change the shower curtain. A single curtain in a clean colour and a slightly better fabric does three jobs at once: it blocks water (curtaining off the shower and easing a floor with no wet-dry separation), it hides ugliness (a scruffy corner or dated tile) and it sets the tone (the whole room's style shifts with it). Pair it with a no-drill tension shower rail and the whole lot comes down and travels with you. One detail worth getting right: a fabric outer curtain looks far better than a plastic one, but hang a cheap plastic liner behind it so the water hits the liner rather than your nice curtain, and buy the length that clears the floor by a centimetre or two so the hem isn't sitting in a puddle.

Other low-cost cover-ups: swap in a plain or Scandi-style bath mat; decant hand wash and shampoo into matching bottles — just "making it match" erases most of the visual clutter on its own; and frame or hide a tired mirror with a stick-on border or a damage-free hung mirror over the top. Hang a fresh set of matching towels while you're at it — greying, mismatched towels quietly drag the whole room down, and a coordinated set is about the cheapest upgrade there is. All of it is visual sleight of hand, not a single screw in sight.

Mould control is the real point

Everything above is a bonus; this bit is survival — and it's the part that most affects your deposit. Once mould gets into the silicone and grout it's both ugly and stubborn, and at move-out it often turns into a cleaning dispute. The order for mould is always prevention over scrubbing after the fact:

• Ventilation comes first. After a shower, open a door or window and run the extractor fan to let the moisture out. Sealed up with no airflow, it'll grow mould no matter how much you wipe.
• Squeegee after showering. Run a silicone squeegee over the walls and floor to push the water to the drain so the surfaces dry faster. It's the cheapest, most effective anti-mould habit there is.
• Seal the joints with an anti-mould strip. Along the join between basin and wall, and the edge of the bath, run a waterproof anti-mould sealant strip to block mould's favourite breeding ground; peel it off at move-out.
• Choose an anti-mould shower curtain and swap it out. The bottom hem of a shower curtain is the first thing to go mouldy; pick an anti-mould fabric, and when it's grubby just replace it — they're cheap.

If mould has already taken hold in the grout, a cheap grout brush plus a mould remover left to sit for a few minutes will lift most of it — the trick is then keeping up the squeegee-and-ventilate habit so it doesn't come straight back. Damp also clings to whatever's left lying around, so hang the bath mat up to dry between uses rather than leaving it flat on wet tile.

Damp is a whole-flat issue, not just the bathroom's. If even your bedroom wardrobe is going damp and mouldy, step back and look at humidity across the whole place — the full battle plan is in the damp and mould handbook.

Nice-to-have extras

If there's budget left and you want to go further, two things punch above their price. A filtered showerhead — old plumbing often delivers poor water that leaves scale on the walls, and a filtered head (it just screws on, no tools, and you swap the original back at move-out) is nicer to shower under and cuts down the scale. And a rechargeable waterproof sensor light — a lot of rental bathrooms have a harsh, dim light, and adding a warm, waterproof sensor light lifts the whole feel instantly, with no wiring. Both come with you when you move. And if the extractor fan is weak or missing altogether, a small plug-in dehumidifier or even a tub of moisture-absorber crystals in the corner takes the edge off the damp between showers.

The bathroom from a deposit angle

To finish, the deposit lens. A bathroom makeover has to hold two lines. First, no drilling or screwing, full stop — every bit of storage goes on a tension rod, a suction cup or a damage-free strip; don't drill into tile (going through the waterproof membrane is a serious matter). Second, be clear on "cleaning" versus "damage": surface black mould on silicone and grout is usually your cleaning duty, to be dealt with before you leave with a mould remover or diluted bleach; but rising damp coming through the wall, or a whole run of silicone peeling away and leaking, is a fabric-of-the-building problem — photograph it, report it to the landlord and keep a record, rather than quietly sealing over it yourself (you can't cover the source, and you muddy the question of who caused it). Rules on what counts as cleaning versus damage vary by area, so check your tenancy agreement if you're unsure. Hold those two lines and the bathroom won't become the disaster zone of your final inspection. The full boundary on deposit responsibility is in the deposit-defence note.

Common questions