Bathroom Lighting Zones: Why UK Zones 1 and 2 Don’t Need IP65
Bathrooms are split into zones 0, 1 and 2. Zone 0 needs IPX7 and SELV, while zones 1 and 2 need at least IPX4 (IPX5 where water jets are used). Every bathroom circuit must sit behind a 30mA RCD. Significant electrical work around baths and showers is likely notifiable under Part P, so use a registered competent person.
TL;DR:
- Shower layouts affect zone boundaries, and mirror lights near taps may fall within Zone 2’s 0.6 meter band; ask an electrician to mark locations first.
- IP65 is not mandatory for ordinary bathrooms: zones 1 and 2 require at least IPX4, while areas exposed to water jets need IPX5.
- For even grooming light, place mirror fixtures at eye level on both sides when possible, and choose a color temperature of 3500K to 4000K.
- New circuits, alterations near a bath or shower, and consumer unit changes are typical notification triggers; verify electrician registration and keep required completion documents.
Table of Contents
- What are bathroom zones 0, 1 and 2 and how do you measure them?
- Which IP rating does each bathroom zone need?
- What do RCD protection, BS 7671 and Part P require?
- How should you place and layer bathroom lighting around the zones?
- How do you choose bathroom wall lights that are compliant?
- How do UK bathroom lighting rules differ from international ones?
- Which light types and wattages suit each zone?
- How can you make bathroom lighting energy efficient?
- Which compliant lighting products suit bathroom zones?
- How do you maintain bathroom lighting in a damp room?
- NOGAN’s view: handcrafted design and bathroom safety
- Where to find our bathroom wall lights and what to check before buying
- FAQ
- Sources
What are bathroom zones 0, 1 and 2 and how do you measure them?
The zones exist because water and mains electricity are a dangerous pairing, and the closer a fitting sits to the water, the tougher the rules become. BS 7671 guidance divides bathroom locations into these three zones, and each has its own boundary and its own minimum protection.
- Zone 0 is the inside of the bath or shower tray itself, the space that can hold standing water. Only SELV equipment (separated extra-low voltage, a maximum of 12V AC or 30V DC) rated IPX7 belongs here.
- Zone 1 is the space directly above the bath or shower. Its boundaries can depend on the shower arrangement, so ask a qualified electrician to determine them.
- Zone 2 is the area beyond Zone 1, and also covers the area around the basin where splashing is likely. Ask a qualified electrician to establish its boundaries.
Zone boundaries depend on the room and shower arrangement. Have a qualified electrician establish the zones before choosing or installing fittings.
A basin outside the relevant zone boundaries may still be exposed to splashing, so consider suitable splash-resistant fittings. Mirror lights are the usual culprit: they sit within arm’s reach of running taps.
Which IP rating does each bathroom zone need?
An IP code indicates a fitting’s protection against water and other ingress. Check the product’s rating and suitability for its location with a qualified electrician. The “X” simply means the first digit (solid particles, such as dust) was not rated.
| Zone | Where it is | Minimum protection | Notes |
|---|---|---|---|
| Zone 0 | Inside the bath or shower | IPX7 and SELV | Maximum 12V AC or 30V DC |
| Zone 1 | Above the bath or shower | IPX4 | IPX5 where water jets may be used |
| Zone 2 | 0.6 m beyond Zone 1, around basins | IPX4 | Mains fittings allowed on a 30mA RCD circuit |
These minima come from the IET’s BS 7671 guidance, which also clears up a common myth. Many people believe every bathroom light must be IP65, but the minimum for zones 1 and 2 is IPX4. IP65 is a sensible choice where jets are involved, for instance a wet room that gets sprayed down, but it is not a strict regulatory requirement for a standard household bathroom.
Do not assume that a mains fitting is suitable for a bathroom. Ask a qualified electrician to check the fitting and its location. Do not assume a mains-voltage fitting is suitable for a bathroom zone. Have a qualified electrician confirm that the fitting and circuit meet the requirements.
There is also a practical difference between “damp-rated” and fully sealed “wet-rated” fittings. A damp-rated light copes with steam and the odd splash. A sealed wet-rated unit keeps moisture away from the electronics entirely, which matters for long-term corrosion in a small, steamy room. If the fitting may be exposed to forceful water spray, ask a qualified electrician to confirm whether it is suitable.
What do RCD protection, BS 7671 and Part P require?
Several rules affect bathroom lighting, and a homeowner should have a qualified electrician confirm which apply.
- RCD protection: all circuits serving a location with a bath or shower must be protected by a residual current device with a rated operating current not exceeding 30mA, as BS 7671 guidance sets out. An RCD is a safety device. Have a qualified electrician check that the circuit protection is appropriate, and do not rely on it to make unsafe electrical work safe.
- Section 701 of BS 7671: this is the part of the IET wiring regulations covering locations containing a bath or shower. It sets the zone definitions and the protection rules summarised above.
- Part P of the Building Regulations: Gov lists installation of a bathroom, and electrical work around baths and showers, among building work that is likely notifiable and should be carried out by a competent or registered person. New circuits, alterations near the bath or shower and consumer unit changes are the typical triggers.
Before work starts, ask your electrician for proof of their registration with a competent person scheme. After the job, ask for the works notification or building control confirmation where one is required, and keep it with your house documents, since a future buyer’s solicitor may ask for it.
Electrical Safety First warns that bathrooms are high-risk rooms, and advises using a qualified electrician and appropriate IP-rated fittings for each zone. Swapping a like-for-like ceiling light is a different matter from adding a new circuit, so if you are unsure which side of the line your job falls, ask your local building control before you start.
How should you place and layer bathroom lighting around the zones?
A single central ceiling light is usually inadequate. Lighting designers recommend layered lighting: ambient light for general visibility, task lighting at the mirror, and accent lighting for mood. Cast from one point overhead, light throws shadows under your brows and chin, which is exactly what you do not want when shaving or applying make-up.
For the mirror, side-mounted wall lights at eye level give the most even, shadow-free light on the face. A wide bar above the mirror is the alternative when walls are tight. Our guide to wall light height helps you settle mounting heights, and our bathroom wall light ideas show how different styles sit around a mirror. Check where your mirror falls relative to Zone 2: a vanity beside a bath may put side lights inside the 0.6 m band, so they need at least IPX4.
For ceiling downlights, try to keep fittings outside the bath and shower zones altogether. If one has to sit above the bath or shower, it must meet the rating for that zone. Switches deserve equal attention. Switches must be suitable for their location. Ask a qualified electrician to confirm the permitted type and safest placement. Place an extractor fan’s isolator outside the zones too.
A quick checklist for installers and renovators:
- Have a qualified electrician establish the bathroom zones before choosing fittings.
- Put ambient lighting outside the zones wherever the layout allows.
- Place task lighting at the mirror, at eye level, with a fitting rated for its zone.
- Check every fitting’s IP rating against the zone it will occupy.
- Locate switches outside the zones, using pull-cords where necessary.
- Confirm the circuit has 30mA RCD protection.
- Have a registered electrician carry out and certify notifiable work.
Pro Tip: Hold a sheet of paper up against the mirror position at night with a torch from each side: whichever placement removes the shadows from your face is where the wall lights belong.
How do you choose bathroom wall lights that are compliant?
Start with the specification sheet. Look for the IP rating, any SELV or low-voltage information, and whether the maker says the fitting is suitable for zones 0 to 2. A fitting with no stated IP rating should stay out of the bathroom.
- Plug-in and rechargeable lights suit renters and anyone who cannot rewire. Our no-wiring wall light guide explains where they work, and they still need a suitable IP rating for wherever they hang.
- Hardwired fittings are the route for permanent installations, and any new circuit or alteration around the bath or shower needs an electrician.
- Colour temperature: for grooming light, aim for 3500K to 4000K, which balances warmth with the colour accuracy needed for shaving or make-up. Our piece on warm white versus daylight covers the trade-offs.
- Lumen output: in a layered scheme, add up the output of each layer rather than relying on one bright fitting.
Before buying, confirm the IP rating for the planned mounting zone, choose the right installation method, and book an electrician for any hardwired job.
Pro Tip: If in doubt, choose a fully sealed, wet-rated fixture: it resists corrosion far better over the years in a steamy room.
How do UK bathroom lighting rules differ from international ones?
The UK system is defined by BS 7671 Section 701, which sets out bathroom zones and their boundaries. Many other countries use similar ideas but draw the boundaries differently, name the zones differently or reference different standards, so a product’s overseas marketing claims do not automatically map onto UK zones.
The practical lesson is to read the stated IP rating and the zone suitability rather than trusting a label like “bathroom safe” or “waterproof”. If you are buying from an overseas seller, check that the fitting carries the markings required for sale in the UK and that its IP code is stated plainly. Dimensions in imported installation guides may not match UK zone requirements, so have a qualified electrician establish the correct boundaries.
Two rules stand out as distinctly UK-shaped: the 30mA RCD requirement for all circuits in a bathroom, and the Part P framework, which makes certain bathroom electrical work notifiable in England and Wales. If you are renovating a property for which you bought fittings abroad, bring your electrician in early so they can confirm what is acceptable under the UK rules before anything is mounted on the wall.
Which light types and wattages suit each zone?
Rather than chasing a wattage figure, choose by zone first and by output second. LED has made wattage a poor guide to brightness, so think in lumens and check the fitting’s rating before anything else.
- Zone 0: equipment must meet the requirements for this location. Ask a qualified electrician to confirm suitable fittings. Most homes never need lighting here.
- Zone 1: choose fittings confirmed as suitable for the location by a qualified electrician, particularly where water jets may reach them. A low-wattage LED is ideal, since it runs cool in a confined space.
- Zone 2: mirror lights and basin-side wall lights may be suitable here, but have a qualified electrician confirm the fitting and circuit protection.
- Outside the zones: ambient ceiling fittings and decorative pendants have more freedom, though a steamy room still favours a moisture-resistant finish.
For a mirror, you want soft, even light at a 3500K to 4000K colour temperature, delivered from both sides if possible. Our LED wall lights are a good place to start browsing, and our designer wall lights suit those who want a considered look beside the mirror. Dimmable fittings help too: bright for grooming, low for a relaxed evening soak.
How can you make bathroom lighting energy efficient?
LED is the obvious answer, because it produces the same light for far less electricity and generates little heat, which is a bonus in a small, humid room. A bathroom light is also often switched on for short bursts and many times a day, and LEDs cope with that far better than older bulb types, which wear faster when cycled.
Beyond the bulb, think about control. Dimmers let you run a low level at night, which saves energy and spares your eyes. Occupancy sensors can stop lights being left on, though any sensor mounted in or near a zone needs the right IP rating, so check it like any other fitting. Keep the switch outside the zones, as described earlier.
Layered lighting also helps efficiency. If task light at the mirror does the heavy lifting, the ambient layer can stay dim or off. That is more economical than driving one over-bright ceiling light to compensate for shadows.
Finally, choose by light output and colour temperature rather than the old bulb-wattage habit. A fitting with a stated lumen figure and a 3500K to 4000K colour temperature lets you match the light to the task without overspecifying. Sealed, long-life fittings also cost less to maintain, because they are not replaced as often.
Which compliant lighting products suit bathroom zones?
Certain fitting types are built for wet rooms. Sealed LED wall lights suit the mirror area, IP-rated downlights suit ceilings, and low-voltage SELV units suit anywhere closest to the water. Our current bathroom range covers the mirror-side position well:
- The Rectangular LED Bathroom Wall Light, Wital is presented as a slim, clean-lined option for mirrors.
- The Wooden LED Bathroom Wall Light, Bakol is presented with a minimalist, Scandinavian look.
- The Solid Wood LED Bathroom Wall Light, Haya is presented with a Nordic-style, natural-material feel.
Check each product page for the stated IP rating and installation method before you match it to a zone. For larger or wetter spaces, a robust higher-rated batten is worth considering: for example, this LED batten listing shows one type of sealed unit. Check its specifications and suitability for the intended location.
Natural materials such as wood and stone look wonderful, but they need to be matched sensibly to the room. Keep wooden or stone fittings in the drier positions, away from direct shower spray, and read the product page for how the finish is sealed. Our natural wall lights and travertine wall lights collections show the range of materials, and our outdoor wall lights are worth a look for fully weather-ready ratings where a bathroom opens onto a terrace.
How do you maintain bathroom lighting in a damp room?
Moisture is the main enemy, so maintenance is mostly about keeping water out and spotting early signs of trouble. Isolate the circuit at the consumer unit before touching any fitting, and never clean around live wiring.
- Wipe, do not spray. Clean glass and diffusers with a damp cloth. Spraying cleaner directly at a fitting can force moisture past a seal.
- Check seals and gaskets. Look for cracks, hardening or gaps, particularly around fittings in zones 1 and 2. A failed seal turns an IPX4 fitting into a weaker one.
- Watch for condensation inside the diffuser. Fogging inside means moisture is getting in, and the fitting should be inspected or replaced.
- Look for rust or green discolouration on screws and metal parts, which signals corrosion.
- Ventilate. A working extractor fan lowers the humidity every fitting has to cope with.
- Test the RCD regularly using its test button, as the manufacturer advises.
Natural-material fittings deserve a little extra care. Dry wood and stone surfaces after a steamy shower, and avoid abrasive or harsh cleaners that could damage the finish. If a fitting in a zone is cracked, fogged or loose, replace it rather than patching it, and have a registered electrician deal with any wiring faults.
NOGAN’s view: handcrafted design and bathroom safety
Good design and good safety are not rivals. Our handcrafted wall lights in natural materials are available in plug-in and rechargeable options, so check the IP rating and installation method first, then pair the look you love with a qualified electrician for anything hardwired.
— NOGAN
Where to find our bathroom wall lights and what to check before buying
Browse our bathroom wall lights collection, then check the IP rating, wiring method, warranty and returns on each product page. Check the returns terms and guarantee details on the product page before you order.
FAQ
Can you have a downlight in the shower?
Yes, but only if it is rated for the zone it sits in. Above a shower, a downlight is in Zone 1, which needs at least IPX4, and the circuit must have 30mA RCD protection, as BS 7671 guidance sets out. Where it can be avoided, keep downlights outside the zones.
What are the electrical regulations for electric showers in the UK?
The circuit must be protected by a 30mA RCD, like every circuit serving a location with a bath or shower. GOV.UK says electrical work around baths and showers is likely notifiable, so use a registered competent person.
Can you light a bathroom with a single ceiling light?
You can, but one central fitting rarely works well. Lighting designers recommend layering ambient and task lighting, with side lights at the mirror, so shadows do not fall across your face.
Does every bathroom light need to be IP65?
No. The minimum for zones 1 and 2 is IPX4, and IP65 is a recommendation where jets or heavy wash-down are used rather than a strict rule, according to the IET’s BS 7671 guidance. Match the rating to the zone and how the room is used.