LED strip lighting in bathrooms: ideas and how to fit it safely
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Mike's quick answer
Bathroom LED strip lights are safe if you use low-voltage strip (12 or 24 V) with the driver outside zones 0, 1 and 2, IP65 strip anywhere water can splash it, and IP67 or IP68 inside a shower niche. Fit it in an aluminium profile with a diffuser, choose warm white, and have it wired from the lighting circuit.
LED strip is the easiest way to add a soft, hidden glow to a bathroom. Tucked under a vanity, inside a shower niche or along a bath panel, it lights the surface around it rather than shining at you, which is what makes a bathroom feel calm in the evening.
It’s safe in a bathroom when four things are right: low voltage, the right IP rating for where it goes, a driver that sits outside the zones, and proper wiring from the lighting circuit. Get those right and the rest is about where it looks best.
Bathroom LED strip lighting ideas
Strip works best as the accent layer: the light you leave on for a bath or a night-time visit, on its own switch, with downlights and mirror lights doing the practical work. These are the places it earns its keep.
Under a floating vanity
This is the one I’d do first. A strip under a wall-hung vanity makes the unit look as if it’s floating, puts a glow across the floor and doubles as a night light. Fix it towards the back of the underside so you see the light on the floor, not the strip.
Inside a shower niche
A strip along the top of a recessed niche lights your bottles and puts a glow in the darkest corner of the room. It gets hit by water every day, so it needs fully encased IP67 or IP68 strip in a sealed profile, and the niche has to be planned before the tiling starts.
Along the bath panel
A strip set into the kick space under the bath panel gives a low, warm line of light across the floor. It’s lovely for evening baths and practical for finding your way at night. Use IP65 at least: it’s right next to the bath and gets splashed when you step out.
Behind the mirror
Strip fixed to the back of a mirror, set slightly off the wall, gives the halo effect of a backlit mirror. It’s a good evening light but a poor shaving light, because the light points away from your face. Buying a ready-made backlit mirror is usually neater than building one. For lighting your face properly, see the bathroom mirror lighting guide.
Ceiling coves and shadow gaps
Strip hidden in a plaster coving, a shadow gap where the wall meets the ceiling, or around a dropped ceiling panel washes light across the ceiling. It makes a room feel taller and gives the even, indirect light you see in hotel bathrooms. Put it on a dimmer, and keep downlights for when you need to see properly. The bathroom ceiling lighting guide covers how coves fit with other ceiling lights.
Shelves, benches and plinths
Under a floating shelf, beneath a wet-room bench or along a plinth, strip adds depth without adding fittings. The same rules apply: IP65 in splash areas, IP67 or IP68 anywhere the shower reaches.
Which IP rating do bathroom LED strips need?
The zones in BS 7671 set the minimum. Any strip in zones 1 or 2 must be at least IPX4, and in zone 1 it should run on SELV (separated extra-low voltage) from a driver outside zones 0, 1 and 2, which is what ordinary 12 or 24 V strip with a proper LED driver does. Most strip is sold as IP20 (bare), IP65, IP67 or IP68, so IP65 is the one to buy for anywhere water can reach.
| Usual zone | Strip to use | |
|---|---|---|
| Under a vanity | Zone 2 or outside the zones | IP65, silicone-coated |
| Along the bath panel | Zone 1 or 2 | IP65, silicone-coated |
| Behind a mirror | Zone 2 or outside the zones | IP65 |
| Ceiling cove | Usually outside the zones | IP65 in a steamy room |
| Shower niche | Zone 1 | IP67 or IP68, fully encased |
| Inside the bath or tray | Zone 0 | Specialist zone 0 products only |
IP65 strip has a clear silicone coating over the LEDs. It shrugs off splashes and steam but isn’t meant to sit in running water. IP67 strip is sealed in a silicone sleeve, and IP68 strip is fully encased in solid silicone; either suits a shower niche. Zone 0, inside the bath or shower tray, is a different matter: anything there must be IPX7 at least, made for zone 0, and run at no more than 12 V AC or 30 V DC. That’s specialist kit, not a strip-light job.
The zones are measured from the bath and shower, not the basin, and they stop at 2.25 m (or the shower head, if higher). The bathroom zones guide explains exactly where each one runs.
Voltage, drivers and wiring
Use 12 V or 24 V strip in a bathroom, not 230 V mains strip. Over a bath or shower, the regulations only allow a mains fitting if its maker says it suits zone 1, and mains strip rarely does. Low voltage avoids the problem and is far safer if a strip gets damaged. 24 V is the better choice for longer runs: as a rule of thumb, 12 V strip starts to dim at the far end after about 5 m and 24 V after about 10 m. For longer runs, feed the strip from both ends or from the middle.
The driver (the transformer that turns mains into 12 or 24 V) must sit outside zones 0, 1 and 2, somewhere dry and reachable: inside the vanity unit, above an access hatch, or in an airing cupboard or the next room. Never bury it behind tiles or plasterboard. Drivers are the part most likely to fail, and you’ll want to swap it without breaking anything.
Size the driver at least 20% above the strip’s load. Multiply the strip’s watts per metre by its length: 3 m of 10 W per metre strip is 30 W, so use a driver of 36 W or more, which in practice means a 40 W or 60 W unit.
Wire it from the lighting circuit, switched from a pull cord or a switch outside the door, and make sure the circuit has 30 mA RCD protection, as every bathroom circuit must. Plug-in strip kits rarely work in a bathroom: ordinary sockets aren’t allowed within 2.5 m of the edge of the bath or shower, so there’s seldom anywhere to plug one in. New wiring within the zones is notifiable under Part P in England, so it’s a job for a registered electrician.
If you want to dim the strip, use a dimmable driver that matches your dimmer (most suit a trailing-edge LED dimmer), or a strip controller made for the purpose. A non-dimmable driver on a dimmer will flicker or fail.
Profiles, diffusers and brightness
Always fit strip in an aluminium profile. It draws heat away from the LEDs, which makes them last longer, holds the strip in a straight line, and protects it. Add an opal diffuser and you see a smooth line of light rather than a row of dots, which matters wherever the strip reflects in gloss tiles or glass. COB strip, where the LEDs sit so close together that the light is continuous, is the other way to avoid dots.
Don’t rely on the strip’s own sticky backing in a bathroom. Steam and temperature changes often loosen it within months. Clip or screw the profile in place, and clean and dry the surface first.
For a glow under a vanity or along a bath panel, strip of about 4 to 5 W per metre, roughly 400 lumens a metre, is plenty. A cove that you want to light the room needs more, around 10 W per metre or 800 to 1,000 lumens. Choose warm white, 2700K or 3000K, and CRI 90 if you can. Cool white strip makes a bathroom look clinical and bathwater look grey. Coloured RGB strip tends to look gimmicky in a bathroom.
For more on strip basics, such as cutting, joining and choosing profiles, the kitchen LED strip guide covers the same products in more depth.
Ideas for different bathrooms
Small bathroom. A strip under a wall-hung vanity plus a backlit or side-lit mirror. Together they make the floor look bigger and the room feel taller. More in small bathroom lighting.
Ensuite. A lit shower niche and a cove or shadow-gap strip around the ceiling, on its own switch for night-time.
Family bathroom. A strip along the bath panel for evening baths and a backlit mirror over the basin, both on a separate switch from the downlights.
Wet room. IP67 or IP68 strip in the niche and under any bench, with every driver outside the zones. The glow shows nicely through the steam.
For how strip fits with the ceiling and mirror lighting, see bathroom lighting ideas.
What I'd buy
Affiliate linksFAQs
Are LED strip lights safe in a bathroom?
Yes, if you use 12 or 24 V strip with the driver outside zones 0, 1 and 2, the right IP rating for each position, and a circuit with RCD protection.
Can you put LED strip lights in a shower?
Yes, in a niche or under a bench, using IP67 or IP68 strip on 12 or 24 V with the driver outside the zones. Not inside the shower tray itself, which is zone 0 and needs specialist products.
What IP rating do bathroom LED strips need?
IP65 anywhere water can splash, such as under a vanity or along a bath panel, and IP67 or IP68 inside a shower niche. Outside the zones, IP65 still lasts better in the steam than bare IP20 strip.
Can I use plug-in LED strips in a bathroom?
Rarely. Ordinary sockets aren’t allowed within 2.5 m of the edge of the bath or shower, so most bathrooms have nowhere to plug one in. Wire it from the lighting circuit instead.
Do bathroom LED strips need a diffuser?
It’s strongly worth it. An aluminium profile with an opal diffuser gives a smooth line of light, protects the strip and stops dots reflecting in tiles and glass. COB strip avoids dots without one.
Can I dim bathroom LED strips?
Yes, with a dimmable driver matched to your dimmer or a strip controller. A non-dimmable driver on a dimmer will flicker.
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