Good detailing lives and dies by light. Swirl marks, holograms, high spots in a fresh coating and dust in a panel gap are all invisible under weak or uneven lighting, then painfully obvious the moment the car rolls into the sun. This guide gives you a clear Australian planning method for car detailing bay lighting, from measuring the room to setting a lux target, choosing fixtures, planning the layout and angles, wiring it safely and testing the result. Follow it in order and you will go from a confused shopping list to a fully specced bay.
Start with the bay, not the fixture
Before you buy a single light, measure the space. Note the length, width and ceiling height in metres, then mark where you actually work: where you wash, where you inspect panels, where you sit to do interiors and where the car nose usually parks. A typical Australian single garage bay is around 3 metres wide by 6 metres long. A double bay is roughly 6 metres by 6 metres. Ceiling height in most homes sits between 2.4 and 2.7 metres, while a shed or commercial unit may reach 3 metres or more, which changes how many fixtures you need and how you aim them.
Write these numbers down. Every decision below flows from your floor area and ceiling height.
Set your brightness target
Detailing needs far more light than a standard garage. A general work area should sit around 500 lux, but for paint correction and coating inspection you want 750 to 1000 lux across the panels you are working on. To turn lux into fixtures, use total lumens.
Quick method: multiply your floor area in square metres by your target lux to get the lumens you need at the floor. As a fast rule of thumb, aim for roughly 850 to 900 lumens per square metre of bay for a bright detailing space.
- Single bay, about 18 square metres: target roughly 15,000 to 16,000 lumens.
- Double bay, about 36 square metres: target roughly 30,000 to 32,000 lumens.
Treat this as ambient, even coverage. Focused defect-hunting lights are separate and come later.
Colour temperature and CRI for true paint colour
Two numbers matter. Correlated colour temperature (CCT) is the warmth or coolness of the light in Kelvin. Colour Rendering Index (CRI) measures how truthfully the light shows colour, on a scale to 100.
Recommendation for Australian detailing: choose a neutral daylight white around 5000K to 5700K, with a CRI of 90 or higher. Neutral daylight closely mimics natural Australian sunlight, so a colour that looks right in the bay still looks right outside. Very warm 3000K light hides defects and skews colour, while very cool 6500K can feel harsh and clinical. High CRI is what lets you trust the finish you see.
The 45 degree cross-lighting method
Bright ceiling light alone flattens a panel and hides swirls. Defects show when light rakes across the surface at an angle. This is cross-lighting: position light so it hits the panel at roughly 45 degrees, then move your head or the light to catch reflections from different directions.
In practice, keep strong even light overhead for ambient work, then add lower, angled light for inspection. Aim movable lights so the beam skims sills, lower doors, bumpers and the shadow gaps between panels, which are the areas overhead fixtures miss. Working around the whole car from several angles is how you catch holograms and high spots before they cure.
Bay-size worksheet
Use this as a starting layout, then adjust for ceiling height and obstructions. Mount overhead fixtures evenly spaced so light overlaps and there are no dark bands over the car.
| Bay type | Approx area | Ambient target | Suggested overhead layout | Mounting height | Spacing |
|---|---|---|---|---|---|
| Single bay | 3 x 6 m | 15,000 to 16,000 lm | 4 to 6 LED battens or panels, or one modular grid over the car | 2.4 to 2.7 m | 1.2 to 1.5 m apart |
| Double bay | 6 x 6 m | 30,000 to 32,000 lm | 8 to 10 fixtures in two rows, or two grids | 2.4 to 3 m | 1.5 to 1.8 m apart |
| Drive-through / long bay | 3 x 9 m plus | Scale per square metre | Continuous rows along the length | 2.7 to 3 m | 1.5 m apart |
Higher ceilings need brighter fixtures or tighter spacing to keep the same lux at the panel.
Compare the main lighting types
Most great bays use a mix. Here is an honest comparison of the common options so you can build the right blend.
| Type | Strengths | Weaknesses | Rough cost each (AUD) | Best use |
|---|---|---|---|---|
| Overhead LED panels | Broad soft even light, low glare | Flat light hides swirls on their own | $60 to $200 | Ambient ceiling coverage |
| LED high bay | Very bright, great for tall sheds | Can create hotspots at low height | $120 to $400 | High ceilings, large units |
| Hexagon modular grids | Dense even ceiling coverage, tool-free linking, clean look | Fixed once installed | $150 to $600 per set | Full coverage above the work area |
| PAR38 light stands | Portable, angled defect hunting | Small coverage, another item to move | $80 to $250 | Cross-lighting and inspection |
| Tube battens | Cheap, easy to line up in rows | Lower CRI options common | $30 to $90 | Budget ambient rows |
For dense, even overhead coverage that links together over a work area, a modular hexagon LED lighting grid is one strong option, and the wider garage lighting range covers panels and battens for the surrounding space.
Light every zone, not just the paint
Paint gets all the attention, but a real detailing bay lights the whole car.
- Interior: a bright handheld or a movable stand to see footwells, seat rails and headliners.
- Wheels and wheel arches: a low angled light so you can see brake dust and iron fallout inside the barrel.
- Engine bay: overhead plus a portable light to reach shadowed corners.
- Lower panels, sills and bumpers: the shadow zones cross-lighting is built to reveal.
- Undercarriage: a rugged portable light if you clean under the car.
The hybrid layout: fixed plus movable
The best bays run two systems together. A fixed overhead grid gives bright, even ambient light so you can move around the whole car safely and see general condition. Movable focused lights then do the defect hunting, raking across panels at an angle to expose swirls, holograms and coating high spots. You need both because ambient light alone flattens defects, and focused light alone leaves the rest of the car dim. A dedicated workshop lighting setup handles the fixed layer, and portable stands cover the rest.
Australian wiring and safety
Australia runs on 230V, and mains wiring is regulated. Plug-in fixtures that connect to an existing socket are plug and play and you can set them up yourself. Any hardwired fixture, new circuit, or new socket must be installed by a licensed electrician. That is a legal requirement, not a suggestion.
- RCD protection: make sure the circuits feeding your bay are protected by a residual current device, which is standard practice for a wet, hands-on workspace.
- IP ratings: in a wash bay or any area exposed to water spray, choose fixtures with a suitable IP rating for damp or wet conditions and keep dry-rated gear away from the spray zone.
- Compliance: use lighting that carries the correct Australian approvals and have a licensed electrician sign off any fixed work.
Power and circuit planning
Add up the wattage of every fixture, then check it against the circuit it sits on. Modern LED keeps this easy. A bright single bay might draw only 200 to 400 watts total, so it often fits on one dedicated lighting circuit, with power outlets on separate circuits for polishers, vacuums and heat guns so lights never dim under load. Plan socket placement around where you actually work, keep cable runs tidy and off the floor, and leave spare capacity so you can add lights later without rewiring. Have an electrician confirm the load before you commit.
Budget tiers in AUD
- Entry, about $300 to $700: rows of high-CRI LED battens or panels plus one portable inspection light. Great, bright, honest results for a home detailer.
- Mid, about $800 to $2000: a modular overhead grid or quality panels for even ambient light, plus one or two PAR38 stands for cross-lighting.
- Professional, about $2500 plus: full grid coverage over multiple bays, dedicated zone lighting, high bay for tall sheds and several movable inspection lights.
Running costs stay low because LED is efficient. A bay pulling a few hundred watts for a few hours a day costs only cents per session, so brightness is cheap once the fixtures are in. For big open sheds, LED high bay lights deliver a lot of lumens per fixture.
Test before you call it done
Do a defect-panel verification. Take a dark or clear-coated panel, correct a small section, then inspect it under your overhead light and your movable lights from several angles. Walk the car and confirm you can see swirls on the bonnet, the lower doors, the bumpers and the shadow gaps. If any zone stays dim or a panel looks flat, add or reposition an angled light. Then maintain the setup: wipe dust off fixtures, keep walls and ceiling matte white to spread light and cut hotspots, and avoid glossy surfaces that throw glare back into your eyes.
Frequently asked questions
How many lumens do I need for a car detailing bay?
Aim for roughly 850 to 900 lumens per square metre. A single bay of about 18 square metres needs around 15,000 to 16,000 lumens of even ambient light, and a double bay of about 36 square metres needs around 30,000 to 32,000 lumens, with focused inspection lights added on top.
What is the best colour temperature for detailing and paint correction?
Choose a neutral daylight white around 5000K to 5700K with a CRI of 90 or higher. It closely matches Australian sunlight, so paint colour and defects look the same in the bay as they do outside. Warmer light hides swirls and skews colour.
Do I need a licensed electrician to install detailing bay lights?
Plug-in fixtures that use an existing socket are plug and play and you can set them up yourself. Any hardwired fixture, new circuit or new power point must be installed by a licensed electrician in Australia, and the circuits should be RCD protected.
Is cross-lighting really necessary?
Yes. Bright overhead light alone flattens panels and hides defects. Light raking across the surface at about 45 degrees reveals swirls, holograms and coating high spots, so a movable angled light is essential alongside your fixed ceiling lighting.
What IP rating do I need for a wash bay?
In areas exposed to water spray, choose fixtures rated for damp or wet conditions rather than standard dry-rated fittings, and keep dry-rated gear out of the spray zone. Have a licensed electrician confirm the fixtures and wiring suit a wet area.
