Bathroom LED Strip Lights

Which IP rating your bathroom actually needs

Match the rating to where the strip sits, not to the room. A strip 200 mm above a basin and a strip inside a shower enclosure face completely different conditions, and buying one rating for the whole room means overpaying in one place and under-speccing in another.

The IP code comes from IEC 60529 and reads left to right: first digit for solids, second for water.

Two ratings cover a bathroom because our tape is built in two versions rather than five. Our COB strip comes in IP20 for dry enclosed positions and IP67 for everything exposed, so the same light quality is available whichever the position calls for. The 24VDC COB flexible tape at 3000K, IP67 runs 10 W per metre at CRI90+ and handles shower zones; the same build is stocked in 2700K and 4000K.

Steam rooms and saunas are a separate problem, because there the failure mode is heat. The sauna LED strip runs at 24VDC in a silicone casing for ambient temperatures up to 100°C: the 24VDC sauna tape at 3000K gives 9.6 W per metre with 80 LEDs per metre over 5 metres, IP65, on SMD3030 chips. A standard strip in that environment fails, and not slowly.

UK bathroom zones are set by BS 7671. Check the requirement for your specific zone against the current edition before ordering, because the zone matters more than the room name. Browse the full LED strips and tapes range to compare builds.

Mirror backlighting, done properly

Set the strip back from the mirror edge and aim it at the wall, not at the room. The glow you are after is reflected light on the wall behind the glass. A strip pointing outward turns the mirror into a light source you cannot look past while shaving.

Three decisions make the difference between a mirror that looks fitted and one that looks stuck together.

Choose COB over SMD. COB packs the chips into a continuous line, so there are no visible dots. On a mirror, where the strip sits close to a reflective surface and gets viewed from a metre away, dotting is the single most obvious tell that the job was done cheaply. Our COB range holds CRI90+, which matters more here than anywhere else in the house: skin tones under a low-CRI strip read wrong, and a bathroom mirror is exactly where people notice.

Use 4000K at the mirror, not 3000K. Neutral white keeps colours honest for shaving and makeup. Save the warmer temperatures for the ambient layer lower down. If you want both from one run, CCT strip shifts between warm and cool on the same circuit, with a tuneable 2700K-6500K COB build at 19 W per metre.

Add a demister behind the glass. A mirror defogger is a heating mat that runs at 230VAC with an IP54 rating. It sits behind the mirror and keeps a clear patch through the whole shower. Round pads run 30, 40, 50 and 60 cm - the 60 cm round defogger covers a standard basin mirror - and rectangular mats run from 30 x 20 cm up to 110 x 40 cm for full-width mirrors. It switches from a touch sensor or an ordinary rocker switch, and it is the difference between an illuminated mirror and a usable one.

For a mirror without a strip channel, the LED backlights range covers flexible sheets and rigid modules that light a panel evenly from behind.

Profiles: where the strip physically goes

An aluminium profile does two jobs. It carries heat away from the strip, which is the main reason strips die early, and its diffuser turns a line of chips into a line of light. In a bathroom it does a third: it gives you a defined edge that silicone can seal against.

Tile-in profiles are the ones worth knowing about, because most bathroom installs never consider them. They bed into the tile joint itself and come in four geometries: U90 for a single edge, U180 for a flush run, U270 for a wrapped corner, and USTEP for a step nosing. The U-Tile geometries come in anodised silver in 1, 2 and 3 metre lengths with covers included; USTEP comes in the same lengths in silver or black anodised with an opal cover. The result is a lit line that reads as part of the tiling rather than as a fitting added afterwards.

Diffuser choice changes the output as much as the strip does. Compare the options in diffusers and covers.

Driver and switching

The strip is low voltage. The mains side of the job is the driver, and in a bathroom it does not belong in the bathroom. Mount it in an adjacent cupboard, a ceiling void or a landing airing cupboard, and run low-voltage cable to the strip.

Pick a driver sized above the total load, not exactly at it, because a supply running at its ceiling runs hot and fails first. For hidden installs, enclosed power supplies suit ceiling voids; for a consumer unit, DIN rail supplies.

For switching, a PIR sensor on a night-light circuit is the upgrade people appreciate most and ask for least. Our PIR range includes the surface-mounted ZONA MINI, rated IP65/20, in white or black, and a two-range adjustable type with a 180 degree detection angle at IP44. Set a low-output strip at floor level on the sensor and the 3 a.m. trip stops involving the main light. Add a dimmer on the mirror circuit and the same run does shaving light and evening light.

Why the tape is 24V

All of our white, CCT and IP67 bathroom tape runs at 24V.

Voltage drop is the reason. Current running down a copper track loses voltage along the way, and the far end of a long 12V run comes out visibly dimmer. Doubling the supply voltage halves the current for the same power, which cuts the loss. Most bathrooms are short runs where the difference would not show - a 600 mm mirror strip is not going to drop - but a perimeter cove around a large wet room is exactly where it would, and standardising on 24V means the same tape works in both.

FAQ

1. Can I put LED strip lights in a bathroom?

Yes, provided the IP rating matches the position and the driver sits outside the wet area. IP67 covers mirror backlighting, niches, shower zones and floor level; IP20 is for dry enclosed positions such as inside a mirror cabinet. The strip itself is low voltage, so the safety question is really about where the mains-side driver lives.

2. Do I need IP44 or IP65 for a bathroom?

It depends on the zone rather than the room, and in practice we solve it by going straight to IP67, which covers everything IP44 and IP65 do and adds protection against temporary immersion. Check the zone requirement in the current edition of BS 7671 before ordering.

3. Are all LED strip lights waterproof?

No. IP20 strip has no water protection at all and is the standard build for dry indoor use. Waterproofing comes from a silicone or resin coating over the PCB, which is why an IP67 strip costs more and bends less easily than the IP20 version of the same product.

4. Do I need an electrician to install LED strip lights in a bathroom?

The low-voltage side - cutting, positioning and connecting the strip - is DIY work. The mains connection to the driver is not, and bathroom electrical work in England and Wales falls under Part P of the Building Regulations. Plan the run yourself, then have the final connection certified.

5. Can I put LED strip in a shower or steam room?

In a shower, yes, with an IP67 strip. A steam room or sauna is a different problem, because the failure mode there is heat, not water. That needs a strip built for high ambient temperatures: ours is an IP65 silicone build for ambient temperatures up to 100°C.

6. What colour temperature is best for a bathroom?

4000K at the mirror, because neutral white keeps skin tones and colours honest for shaving and makeup. 2700K or 3000K for anything ambient - under a vanity, in a cove, at floor level. If you want one run to do both, use a CCT strip and a controller.

7. How long do bathroom LED strips last?

Marc LED strips are rated at 50,000 hours and above. That figure assumes the strip is mounted in an aluminium profile acting as a heat sink. The same strip stuck straight onto tile or plasterboard runs hotter and degrades faster, and in a bathroom it also has nothing for the silicone to seal against.