TL;DR: Near a bath or shower, choose an illuminated mirror rated at least IPX4 (IP44 is common) and have it wired in by a qualified electrician; after that, choose on demister, colour temperature and size.
- Zones 1 and 2 around a bath or shower need IPX4 as a minimum, or IPX5 where water jets could hit it.
- Most illuminated mirrors are hardwired, and some bathroom electrical work is notifiable under Part P.
- A demister is worth having if your bathroom steams up.
- Around 3000K is warm and relaxing, around 4000K is crisper for tasks; look for CRI 90+.
- Go slightly narrower than the basin, leave 10cm to 20cm above the tap and centre it near eye level.
An illuminated bathroom mirror gives you good, even light on your face exactly where you need it, and a well-chosen one can replace a harsh ceiling light as the main light for shaving, make-up and skincare. Because it is an electrical fitting in a wet room, though, there is more to choosing one than shape and size.
This guide covers the safety side first (IP ratings, bathroom zones and wiring), then the features that make a real difference day to day: demisters, colour temperature, colour rendering, brightness and sizing.
Bathroom zones and IP ratings
The UK wiring regulations, BS 7671, divide a bathroom into zones based on how close you are to water. Each zone has a minimum level of water protection, shown as an IP rating.
| Zone | Where it is | Minimum rating |
|---|---|---|
| Zone 0 | Inside the bath or shower tray | IPX7 |
| Zone 1 | Directly above the bath or shower tray, up to 2.25m from the floor | IPX4 |
| Zone 2 | 0.6m out from the edge of zone 1, up to 2.25m from the floor | IPX4 |
| Outside the zones | The rest of the room | No specific rating set, but damp-resistant fittings are sensible |
Where fittings could be hit by water jets, for example during cleaning, IPX5 is needed instead. Wet rooms and walk-in showers without a tray are zoned differently, so your electrician will assess those on site.
What does IP44 mean?
An IP rating has two digits. The first is protection against solid objects, and a 4 means objects over 1mm are kept out. The second is protection against water, and a 4 means protection against splashing from any direction. An X in place of a digit simply means that part was not tested. So an IP44 mirror meets the IPX4 water requirement for zones 1 and 2.
Many of the Origins Living illuminated mirrors we supply are rated IP44 and suitable for zone 2. They are also typically Class II, meaning double insulated so they do not need an earth connection. Always check the specification of the exact model, particularly if the mirror will sit close to a bath or shower.
Wiring: always use a qualified electrician
Most illuminated bathroom mirrors are hardwired into the lighting circuit rather than plugged in, and ordinary socket outlets are not allowed near a bath or shower. This is a job for a qualified electrician, not a DIY project.
In England, some bathroom electrical work is notifiable under Part P of the Building Regulations. That includes installing a new circuit, and any addition or alteration to an existing circuit within the area around a bath or shower (up to 2.25m high and 0.6m out from its edge). An electrician registered with a competent person scheme can certify the work for you. Circuits serving a bathroom also need protection by a 30mA RCD.
Plan the mirror before the walls are finished. Your electrician needs to know the exact position, the cable entry point on the back of the mirror and how you want it switched, so the cable ends up in the right place before tiling.
Demisters
A demister is a thin heated pad on the back of the glass that stops the mirror steaming up after a shower or bath. Many Origins Living illuminated mirrors have one built in, and demister pads are also available separately for other mirrors.
Built-in demisters are usually controlled with the lights or with their own touch button. On the Claris Capsule, for example, the built-in demister comes on with the mirror light, so there is nothing extra to remember. If your bathroom has no window or a weak extractor fan, a demister makes the mirror far more useful.
Colour temperature and colour accuracy
Colour temperature (Kelvin)
The colour of white light is measured in Kelvin (K). Lower numbers are warmer and more yellow; higher numbers are cooler and bluer.
- Around 2700K to 3000K: warm white, relaxing and flattering, good for a calm bathroom.
- Around 4000K: neutral white, crisp and clear for everyday tasks.
- Around 6000K: cool, daylight-style light.
Some mirrors let you change the colour temperature, which is useful if the same mirror is used for a relaxing evening bath and for doing make-up in the morning. The Origins Living Claris Capsule mirror, for example, adjusts between 3000K and 6000K. Try to keep your mirror close in colour to the other lights in the room, so white tiles do not look two different shades.
CRI (colour rendering)
CRI measures how accurately a light shows colours, on a scale up to 100. For a mirror you get ready in front of, look for CRI 90 or above if the manufacturer publishes it. A lower CRI can make skin tones and make-up look slightly off.
Brightness: lumens, not watts
With LED lighting, wattage tells you how much power a light uses, not how bright it is. Brightness is measured in lumens. A larger mirror generally gives more light, and the way the light is spread matters as much as the total. Front lighting, which shines towards you, is best for tasks. Backlighting creates a soft glow on the wall and works well as mood lighting. A dimmable mirror gives you both bright task light and a gentle night light.
Sizing an illuminated bathroom mirror over a basin
There are no rules in the regulations for this, but a few rules of thumb work well:
- Width: keep the mirror slightly narrower than the basin or vanity unit below it, so it looks anchored rather than floating.
- Height above the tap: leave a clear gap above the tap, roughly 10cm to 20cm, so it does not look cramped and is easy to clean.
- Eye level: aim for the centre of the mirror to sit around the eye level of the people who use it most. Tall mirrors, such as capsules and arches, suit households of different heights.
- Shape: round and arched mirrors soften a room full of straight lines; rectangles and capsules give the most usable reflection.
Measure the wall between any tiles, light switches and the ceiling before you buy, and remember the cable position. Browse sizes and shapes in our mirrors collection or the full Origins Living range, and pair your mirror with a basin from our basins collection.
Magnifying mirrors
For close-up tasks, a magnifying mirror is a useful addition alongside the main mirror. Origins Living magnifying mirrors come in 3x, 5x and 7x magnification. As a guide, 3x is enough for most shaving and skincare, while 5x and 7x suit detailed make-up or anyone who finds fine detail hard to see.
Prefer a mirror without lights?
If you would rather keep things simple, a non-illuminated mirror such as the Oslo round mirror can be paired with suitably rated wall lights either side. The same zone and IP rules apply to those lights.
Frequently asked questions
What IP rating does an illuminated bathroom mirror need?
In zones 1 and 2 around a bath or shower, the minimum is IPX4. IP44 mirrors meet this. Outside the zones there is no set rating, but a bathroom-rated mirror is still the sensible choice.
Can I install an illuminated mirror myself?
No. Most are hardwired and bathroom electrics carry extra rules, and some work is notifiable under Part P in England. Use a qualified, registered electrician.
What colour temperature is best for a bathroom mirror?
Warm white (around 3000K) suits a relaxing room; neutral white (around 4000K) is crisper for tasks. An adjustable mirror lets you switch between the two.
Do I need a demister?
Not always, but it is worth having if your bathroom steams up easily. It keeps the mirror clear straight after a shower.
Book a free consultation
Choosing the mirror early makes wiring and tiling much simpler. Every project starts with a free one-to-one consultation and an itemised quote, and the same team takes it from design to completion. Visit our Birmingham showroom (Tuesday to Saturday, 9am to 5pm), call 0121 794 2553 or book your free consultation. If you are choosing taps at the same time, our guide to bathroom tap finishes will help you match the whole room.