Choosing lights for bathrooms and outdoor areas in New Zealand is partly about style and mood, and partly about something far less glamorous: stopping water and dust getting where they should not.
That is where an IP rating earns its keep. Get it right and your fittings stay safer, last longer, and keep looking sharp. Get it wrong and you can end up with corrosion, fogged lenses, premature failures, or a fitting that is simply not legal for the location.
What an IP rating really means
IP stands for Ingress Protection. It is a standardised way to describe how well an electrical enclosure resists the entry of solids (like dust) and liquids (like splashes, rain, or jets of water).
It does not tell you whether a light is “good quality” overall. It tells you how well it is sealed against intrusion, under defined test conditions.
In New Zealand, you will commonly see IP ratings on downlights, wall lights, exterior bulkheads, bollards, step lights, deck lights, and bathroom mirrors with integrated LEDs.
How to read the code: IP followed by two digits
An IP rating usually appears as IP plus two digits, like IP44. Each digit has a specific meaning.
The first digit is for solids (dust and objects). The second digit is for water.
Here is the mental shortcut most people use when shopping:
- Higher first digit: better resistance to dust and small particles
- Higher second digit: better resistance to water exposure
You will also see “X” where a digit is not stated, like IPX4. That means the product has been rated for water resistance but not formally rated for solids.
After you have seen a few common ratings, it becomes second nature.
- IP20: indoor dry areas only
- IP44: splash resistant, typical for bathroom zones and sheltered outdoor walls
- IP65: dust tight and hose resistant, common for exposed outdoor fittings
Why bathrooms in NZ are treated as special locations
Bathrooms combine electricity, moisture, steam, and bare feet. That is why bathroom lighting is treated differently from lighting in a hallway or bedroom.
NZ electrical work is guided by standards and regulations, and bathrooms are typically designed around defined “zones” near a bath or shower. The closer you get to the water source, the more protection is expected.
This zoning affects which IP rating is suitable, and may also affect voltage and installation method. A licensed electrician will interpret the location, the fitting, and the manufacturer’s instructions together.
Bathroom zones: a practical guide (and the IP ratings you will see)
Bathrooms are commonly considered in zones around the bath or shower. The names vary a little depending on the reference material, but the idea is consistent: proximity to water matters.
Before buying anything, map your bathroom quickly. Think about where water can realistically go, not just where it “should” go.
- Shower over bath
- Walk-in shower with an open entry
- Vanity and mirror area
- Ceiling directly above shower head
- Wall beside the shower screen
Typical minimums people use when specifying bathroom lights
The table below is a useful starting point for bathroom lighting in NZ homes. It is not a substitute for the applicable rules or a qualified electrician’s judgement, especially with unusual layouts (wet rooms, open showers, rain heads, body jets).
| Bathroom location (typical zone) | What happens there | Common minimum water rating seen | Notes |
| Inside bath or shower (Zone 0) | Direct immersion possible | IPX7 | Products are specialised; placement is limited. |
| Above bath/shower area (Zone 1) | Regular spray, heavy condensation | IPX4 (or IPX5 where water jets may occur) | Many bathroom downlights are IP44 (covers splashes) but check the exact positioning. |
| Adjacent to bath/shower (Zone 2) | Splashes and steam, less direct spray | IPX4 | Common spot for wall lights near a vanity if close to the shower. |
| General bathroom area | Steam and condensation | Often IP20 is acceptable | Many people still prefer a higher rating for longevity in steamy rooms. |
A small but important detail: IP44 means protection against solid objects over 1 mm and splashing water. IPX4 only states splash resistance and says nothing about solids. Either can be fine, depending on the fitting and where it goes.
Outdoor lighting in NZ: rain is only the beginning
Outdoor lighting faces a harsher mix than most indoor spaces: rain driven sideways by wind, temperature swings, UV exposure, insects, and in many parts of NZ, salt.
A sheltered porch in Christchurch and a coastal deck in Tauranga are two very different environments. IP rating helps, but it is only one piece of the outdoor puzzle.
When thinking about what IP rating you need outside, start with the exposure level:
- Under a deep soffit with minimal weather: you may be able to use lower IP-rated fittings than fully exposed walls
- On an exposed fence or exterior wall: you are asking for water ingress resistance again and again
- In gardens and paths: you have sprinklers, puddles, soil, and physical knocks
Many homeowners default to IP44 for outdoor wall lights, then step up to IP65 for more exposed locations, coastal homes, or ground-level fittings. That is a sensible approach in a lot of NZ settings.
If you are lighting areas that may be cleaned with a hose, or you are installing uplights and bollards close to the ground, choosing a higher water rating is often money well spent.
Matching the IP rating to real-life placement
A light can be “outdoors” and still be relatively protected. Another can be technically under cover and still get soaked due to wind, roof runoff, or the way the building funnels rain.
Think about the path water takes during a storm, and how the fitting is mounted. Water tends to find cable entries, seams, and poorly sealed joins.
Here are common placement scenarios and what usually drives the IP decision:
- Fully exposed exterior walls: aim higher than basic splash resistance
- Eaves and verandas: moderate exposure, but wind-driven rain still counts
- Coastal areas: salt accelerates corrosion, so sealing and materials matter
- Bathrooms with open showers: treat “splash zone” as larger than you expect
- Above vanities: steam and condensation test seals over time
A single fitting choice can be perfect in one home and wrong in another purely due to exposure and airflow.
IP rating is not the whole story (but it is the first filter)
Once you have the right IP rating range, the next questions are about durability, comfort, and maintainability.
A few practical factors that often matter just as much in NZ homes:
- Corrosion resistance: coastal and geothermal areas punish cheap metals
- LED driver quality: heat and moisture stress drivers, not only LEDs
- Glare control: bathrooms need bright light, but not harsh reflections in mirrors
- Serviceability: a sealed fitting that cannot be maintained can be frustrating later
- Colour temperature and colour rendering: task areas benefit from clean, accurate light
Also consider how the fitting is sealed in practice. A high IP rating can be undermined by poor installation, damaged gaskets, or incorrect orientation.
Common mistakes people make when buying bathroom and outdoor lights
Most problems are predictable. They happen when the rating is treated like a marketing label rather than a location-specific requirement.
- Picking IP20 for “just a little steam”: bathrooms stay damp longer than people think
- Assuming IP44 suits every outdoor wall: wind-driven rain can behave like a hose
- Ignoring cable entry points: water can track along cables if not installed correctly
- Overlooking the zone around open showers: splash spreads wider without screens
- Choosing based on looks alone: a stunning fitting is no help if it fails early
If you want your lighting to feel like a long-term upgrade, spend the effort on suitability first, then aesthetics.
A quick checklist to take to the shop (or to your sparky)
Walking in with a plan makes lighting selection faster and more accurate. It also helps your electrician confirm what is appropriate before anything is installed.
- Bathroom layout: shower type, bath position, and where the steam tends to linger
- Mounting location: ceiling, wall, under eaves, on a fence, or near ground level
- Exposure level: sheltered, semi-sheltered, or fully exposed to wind-driven rain
- Cleaning method: whether the area is hosed down or pressure-washed
- Material preference: powder-coated aluminium, stainless steel, or durable polymers
Some NZ lighting suppliers can also coordinate supply with installation, which can simplify decisions around placement, compliance, and what fittings are realistic for your ceilings and wiring. If you are in Auckland, you may also find retailers that offer qualified installation teams alongside their lighting range, which can be handy when you want the whole job managed cleanly.
Getting the detail right feels good every day
Bathroom lighting should feel crisp and flattering, not gloomy or glary. Outdoor lighting should feel welcoming, not fragile or temperamental.
IP ratings are the quiet part of that experience. When you choose fittings with the right protection for the exact spot they are going, the result is confidence. You switch the lights on during a storm, step into a steamy shower, or come home late at night, and everything just works.
Choosing with confidence in New Zealand homes
Understanding IP ratings helps you make smarter lighting choices, but real confidence comes from matching the right fitting to the right space — and having people who understand New Zealand homes guide that decision. From steamy bathrooms to exposed outdoor areas, the details matter more than they first appear.
Galaxy Lighting is a 100% NZ-owned and operated lighting specialist, serving homeowners, builders, and renovators since 2014. Based on the North Shore, the team has supported over 100,000 new build and renovation projects across the country, offering carefully selected lighting for both indoor and outdoor spaces — from statement chandeliers and pendants to practical, weather-ready exterior fittings.
With a knowledgeable sales team that tracks international lighting trends, and a qualified installation team available across Auckland, Galaxy Lighting helps ensure your lighting not only looks right, but is suitable, compliant, and built to last in real New Zealand conditions. If you would like guidance on choosing bathroom or outdoor lighting with the right IP rating for your home, Galaxy Lighting can help you make the choice with clarity and confidence.
