Quick answer: the best triple garage lighting layout
Most Australian triple garages are about 9 m x 6 m to 11 m x 7 m, which is roughly 54 to 77 m². Aim for around 150 lux if you only park, 300 lux for general work and 400 to 500 lux for detailing or bench work. That works out to roughly 11,600 to 16,500 lumens for parking, 23,000 to 33,000 lumens for an all round garage and 38,000 to 55,000 lumens for a detailing finish. For most homes the strongest triple garage lighting layout is one hexagon grid per bay, centred between the cars and switched separately, with the bay you work in lit to a higher level.
How to calculate lumens for a triple garage
Use this planning formula: lumens needed = target lux x floor area (m²) ÷ light loss factor. We use a light loss factor of 0.7 as a planning allowance for light absorbed by walls and ceiling, dust and LED ageing. Bare concrete and dark walls absorb more light, so round up if your garage is unpainted.
The lux targets come from AS/NZS 1680.1, the Australian interior lighting standard. It lists recommended maintained illuminance by task, such as 160 lux for ordinary tasks, 240 lux for moderately easy tasks and 400 lux for moderately difficult work. AS/NZS 1680 is guidance for a home garage, not a legal minimum, but it is the most reliable benchmark for Australian conditions.
| Triple garage size | Area | Parking (150 lux) | General work (300 lux) | Detailing or bench (500 lux) | Suggested layout |
|---|---|---|---|---|---|
| 9 m x 6 m | 54 m² | about 11,600 lm | about 23,100 lm | about 38,600 lm | Three grids, one per bay |
| 10 m x 6.5 m | 65 m² | about 13,900 lm | about 27,900 lm | about 46,400 lm | Three grids, or two grids plus task zone |
| 11 m x 7 m | 77 m² | about 16,500 lm | about 33,000 lm | about 55,000 lm | Full width grid or three large grids plus perimeter |
Worked example: a 10 m x 6.5 m triple garage
- Floor area: 10 x 6.5 = 65 m².
- Two bays for parking at 150 lux: about 43 m² x 150 ÷ 0.7 = about 9,300 lumens.
- One workshop bay at 400 lux: about 22 m² x 400 ÷ 0.7 = about 12,600 lumens.
- Total: about 21,900 lumens, far less than lighting the whole room to 400 lux (about 37,100 lumens).
That is the main advantage of zoning a three bay garage: you raise only the bay that needs it. Compare the result against the lumen rating listed on each kit in the HEXA garage lighting range.
Triple garage layout options compared
Picture the garage from above with the doors along the bottom, three cars parked side by side and storage or a bench along the back wall.
| Layout | Top view placement | Pros | Cons | Best for |
|---|---|---|---|---|
| One full width grid | A single large hexagon grid across the middle of the ceiling, behind the door tracks | Strongest visual impact, even light across all bays | One switch for everything, larger install, may clash with three opener rails | Show garages and high ceilings |
| Three grids, one per bay | One grid centred over each car, slightly offset toward the gaps between cars | Switch each bay separately, easy to fit between rails | Needs careful spacing to avoid dark bands | Most family triple garages |
| Two grids plus task zone | Grids over the two parking bays, a denser grid or linear lights over the bench bay | Puts lumens where work happens, lower running costs | Brightness differs between zones | Mixed parking and workshop |
| Grid plus perimeter | Central grid with linear lighting around the walls | Lights tool walls, shelving and car sides | More components and planning | Detailing and large storage walls |
For large spaces the Hexagon Grande Luminaires suit the full width option, while separate kits per bay make zoning simpler.
Light between and beside the cars, not just over the roofs
A light directly over a car roof lights the roof and throws the doors, wheels and sills into shadow. Shift each grid so its edges reach past the vehicle into the walkway, and make sure the gaps between cars, where you open doors and walk, sit under lit areas. Along the outer walls, linear lighting or the edge of a grid adds the side light that shows panels and lower trim.
Working around door tracks, openers and storage
- Panel lift doors: the horizontal tracks often run 2.5 m or more back from the door. Keep fittings clear of where the open door panel sits and plan grids behind or between tracks.
- Openers and rails: a triple garage may have two or three opener rails. Allow clearance around motors and rails, and follow the opener maker's guidance.
- Roller doors: the drum sits above the opening, so that front strip of ceiling is usually out of bounds.
- Single plus double door: the rails sit at uneven spacing, so a per bay layout often fits better than one symmetrical grid.
- Storage racks: overhead racks block light. Keep grids off the rack zone and light the shelving with wall mounted linear lights.
Where obstructions crowd the ceiling, suspension lets a grid drop below beams or sit at a consistent height over uneven framing. Our technical guides cover suspended versus surface mounting in more detail.
Ceiling height and mounting
| Ceiling height | Mounting | Planning notes |
|---|---|---|
| 2.4 m | Surface mount | Light is close to car roofs, so glare is higher. Spread lumens across more, smaller grids |
| 2.7 m | Surface mount or short suspension | The most forgiving height for per bay grids |
| 3 m and above | Suspension often preferred | Wider spread per grid, raise lumens slightly to offset distance |
| Raked or high ceilings | Suspension | Hang grids level at a consistent height across all bays |
Zoning, switching and power planning
Switch each bay or zone separately so you can light only the parking bays at night or bring the work bay up for a job. Motion sensors suit the walkway from the house door, and smart switches let you set scenes such as park, work and detail.
Plug and play versus a hardwired install
Plug and play kits run from a standard power point, which makes a per bay layout simple: one power point for each grid gives you a separate zone. Plan cable runs along framing, keep leads clear of door tracks and moving parts, and never run leads where the door or a car can catch them. In Australia, new power points, new circuits, hardwired fittings and wall switch wiring must be done by a licensed electrician. If you want everything on wall switches, have the electrician plan circuits per zone at the same time.
Colour temperature, CRI and glare on paint
For detailing, paint correction and inspection, 5000K to 6500K gives a crisp daylight white that shows swirls and holograms. Look for a high CRI (90 or above is the usual target for paint work) and check it on the product specification. Glossy paint reflects a grid like a mirror, which is useful for inspection but harsh at low ceilings. Spread the light over several grids and add side lighting so you can view panels at different angles.
Uniformity: avoiding dark bands between bays
As a planning rule, keep the unlit gap between grids no wider than the height from the lights to the work surface, about 1.5 m in a 2.4 m garage. Bring grids within about 0.6 to 1 m of the walls so corners are not dim, and add vertical light on tool walls and shelving so you are not working in your own shadow. In a mixed use garage, keep the parking bays even and let only the gym, workshop or detailing bay step up. Our workshop lighting suits that task bay.
Running costs in AUD
Use: watts ÷ 1000 x hours per day x 365 x your tariff. For example, a 300 W lighting load on for 2 hours a day at 30c per kWh costs about $66 a year. Switching per bay cuts this further because you only power the zone in use. Use the actual wattage on the product page and your own tariff.
Pre purchase checklist
- Measure length, width and ceiling height in metres.
- Mark door tracks, opener rails, the drum, racks and the bench on a top view sketch.
- Decide the use of each bay and set a lux target per zone.
- Calculate lumens per zone with the formula above.
- Choose a layout and check the gaps between grids.
- Plan power points or circuits and book a licensed electrician for fixed wiring.
- Choose colour temperature and CRI for detailing bays.
Frequently asked questions
How many lumens does a triple garage need?
A typical 54 to 77 m² triple garage needs about 11,600 to 16,500 lumens for parking, 23,000 to 33,000 lumens for general work and 38,000 to 55,000 lumens for detailing, using a 0.7 light loss factor.
Is one big grid or three smaller grids better for a triple garage?
Three grids, one per bay, suit most homes because each bay can be switched separately and the grids fit between door tracks. One full width grid gives the most striking look in large garages with a clear ceiling.
Can I mount lights near a garage door track?
Yes, as long as fittings stay clear of the open door panel, tracks, opener rails and the motor. Where the ceiling is crowded, suspension lets a grid sit below obstructions.
Do I need an electrician to light a triple garage?
Plug and play kits run from a standard power point. New power points, new circuits, hardwired fittings and wall switch wiring in Australia must be done by a licensed electrician.
Ready to plan your bays? Explore the HEXA garage lighting range and match a kit to each zone of your triple garage.
