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Installing outdoor lighting: a step-by-step guide

This article is also available in French: Installer éclairage extérieur

29/09/2026 · 9 min read · By the Designix team
Installing outdoor lighting: a step-by-step guide

Three decisions drive everything: the protection rating of each point according to its exposure, a cable able to live outside, and two or three light sources spread out rather than a single floodlight. A wall under a canopy is fine with IP44. A driveway, a low wall or an exposed post calls for IP65.

How do you install outdoor lighting, step by step?

You identify the areas that must stay readable at dusk, you set the protection rating for each one, then you run the power supply to the chosen points. Starting by buying the fixture and looking for a place for it afterwards almost always means redoing the installation, and sometimes reopening a trench.

Which outdoor fixture for which use

Type of fixture Target protection rating What it does Mounting
Outdoor wall light IP44 Lights a wall, frames a door or a passage Wall-mounted
Bollard or lantern IP44 to IP65 Marks out a path, lights the ground without glare Freestanding
Floodlight with sensor IP65 Secures an entrance, lights far, switches on by itself Surface-mounted
Solar spotlight or bollard IP44 to IP65 Marks out without a cable, where running a line is impossible Freestanding or on a stake
String lights IP44 Creates the mood on a terrace, strings up and packs away Hanging

The right reflex is still to start from a use: marking a step, lighting a threshold, drawing a border. The outdoor lighting collection brings together shapes that hold up outside without looking like site equipment.

Installing outdoor lighting on a terrace

A terrace is lit in layers, never from a single point. Three levels are enough to separate a simply lit outdoor space from an outdoor space that feels lived in.

  • The passage between the door and the garden stays marked out, without dazzling whoever walks through.
  • The table gets a warm light, never thrown back into the guests' eyes.
  • The borders gain a low point that draws the edge of the plot.

If the ground is being redone, deal with the lighting at the same time as the terrace. Renovating a balcony or terrace is prepared before drilling, not after.

Installing wall-mounted outdoor lighting

The wall carries the light where no ceiling exists. A surface-mounted wall light shines downwards and secures a threshold. Placed higher, it shines upwards and stretches the facade.

A successful facade lighting scheme is judged at dusk, when the wall's materials reappear without the source being visible.

In a survey of 250 references from our catalogue on 29 September 2026, 32% declare wall mounting and 8% surface mounting. So there is plenty to dress a facade, not just a ceiling. Outdoor wall lights bring these models together.

Which cable and which power supply for outdoor lighting?

A cable designed for outdoor use, resistant to moisture, laid in conduit as soon as it is buried or runs along an exposed wall. The connection is made on a protected circuit, with waterproof boxes and cable glands. Never a bare connector block out in the open.

Outdoor electrical installation: what changes in the rain

Outside, water does not fall straight and creeps back up by capillary action. Four details separate an installation that lasts from a repair after the first storm.

  • The cable drop forms a drip loop before entering the box.
  • The conduit protects the cable wherever it is buried or fixed against a wall.
  • The connection boxes stay waterproof and accessible, never buried in the masonry.
  • The fixture shows a protection rating consistent with its real exposure, not with the shop's.

Before drilling and running a line

  • Locate the power point and the circuit breaker that protects it
  • Check the nature of the surface: render, stone, wood, concrete
  • Choose the protection rating according to the wall's real exposure
  • Mark the positions of the sources in pencil and check the alignment from the street
  • Plan for a cable grommet and a new gasket at every hole
  • Test the fixture before fixing it permanently
  • Seal up and check waterproofing before the first rain

The connection is no different from an indoor point, provided you respect the order of the wires and tighten the connections. Wiring a fixture properly means checking waterproofing before switching the power back on.

Installing an outdoor floodlight with a sensor

A floodlight with a sensor is placed opposite the area being monitored, angled downwards, never facing a road or a neighbour's window.

The delay and sensitivity are set at night, by actually walking through the detection field. A correctly set outdoor light with a sensor switches on at the right moment, and not every time an animal passes.

GU10 socket units are repaired bulb by bulb, which avoids replacing the whole floodlight when a single source dims. GU10 LED bulbs do this job without heating up.

What is the difference between IP44 and IP65?

IP44 resists water splashes, IP65 resists water jets. An IP44 holds up under a canopy or a roof overhang. An IP65 stays outside, exposed to driving rain, jet washing and sea spray.

IP20, IP44, IP65, IP67: what each one protects against

Rating Protection against water Where it holds up
IP20 None Indoors, enclosed conservatory
IP44 Splashes Sheltered wall, under a canopy
IP65 Water jets Exposed wall, post, driveway
IP67 Temporary immersion Poolside, flood-prone area

The rating applies to the assembled fixture, not to its shade alone. In the catalogue, outdoor lights are therefore read first by their rating, then by their style.

Why 94% of our survey is IP20

In a survey of 250 references from our catalogue on 29 September 2026, 94% declare IP20, against 4% IP65 and 2% IP44. The collection counts 26,176 references on that date, and it remains first and foremost an indoor catalogue. Outdoor lighting is not chosen there the way a living room fixture is.

That is not a flaw, it is a reminder: a model sold as outdoor without a rating suited to its location will last less long than a modest model well placed.

An outdoor scheme rarely fails because of the fixture: it fails because of the location. You can describe your facade, your driveway or your terrace to us, and we will tell you where to put what.

What is the most efficient outdoor lighting?

LED wins over solar as soon as a point has to light strongly or for a long time. Solar wins when running a cable costs more than the device itself, or when drilling is not possible.

LED or solar: the right trade-off

Criterion Mains LED Solar
Intensity Constant all night Varies with charge
Installation Cable to run No trench
Ideal use Driveway, facade, entrance Marking, border, isolated wall

To decide, start from the LED power for outdoor lighting that the surface actually requires, then see whether solar can supply it every evening.

Which LED power for outdoor lighting?

Power is chosen after the surface and the use, never before. A marking point is fine with a few watts. A courtyard floodlight goes higher, but lights wider.

The decisive question remains the number of lumens reaching the ground, not the value printed on the box. Two devices of the same power do not give the same light depending on mounting height and beam angle.

To calibrate, ask yourself how many lumens outside are enough for the distance between the source and the area to be lit.

What advice for lighting a terrace outside?

Light what you look at in the evening, not what you want to show off during the day. Two or three low sources are worth more than a central floodlight that flattens the terrace and dazzles the guests.

Installing solar outdoor lighting, with no cable or trench

Solar avoids the trench, not thinking about exposure. A panel placed in the shade of a wall or under a tree does not recharge enough to last a whole evening.

Solar wall lights suit walls with no power supply and rentals where drilling is a problem.

Two or three sources rather than one central point

A single point creates a bright area and leaves the rest of the terrace in the dark. Spreading the light gives a depth that power alone does not provide.

  • A floor lamp near the sofa or the table, for seating light.
  • A wall light on the back wall, which lights without taking up floor space.
  • A low point along a border, to draw the edges.
  • A high source above the table, for atmosphere without glare.

The freestanding outdoor floor lamp plays this seating role without drilling into the facade.

For atmosphere, string lights hung high and without crossing do the work of an extra light point.

An LED string light is chosen on the total length to cover, not on the number of points advertised.

Which outdoor space do you want to light first?

Installing outdoor lighting: the questions we get asked

How do you install outdoor lighting?
First decide on the use (marking, securing or creating an atmosphere), then on the location, and only then on the fixture. Next comes the choice of protection rating according to the wall's exposure, then the connection on a protected circuit. Two or three well-placed sources are worth more than one powerful central point.
Which cable to power outdoor lighting?
A cable designed for outdoor use, sheathed and UV-resistant, laid in conduit or in a trench. The cross-section depends on the length of the circuit and the total power: this is the point to have checked before closing a trench, because you do not go back to it without reopening everything.
What is the standard for outdoor lights?
The readable marker on the product sheet is the IP protection rating: it indicates what the fixture withstands. A model intended for outdoor use shows at least IP44; in an area very exposed to rain and wind, you go up to IP65. The rest is a matter of the electrical installation itself.
What is the difference between IP44 and IP65?
IP44 protects against solids over 1 mm and against water splashes: enough under a canopy or a roof overhang. IP65 is fully protected against dust and against water jets: that is the level to aim for on a wall battered by rain or near a pool.
What advice for lighting a terrace outside?
Light the terrace like a living room: a low source for atmosphere, a source on the wall for reading and conversation, a string light or a high point for depth. Avoid sources aimed at the guests' eyes and light temperatures that are too cold after sunset.
What does an outdoor lighting installation cost?
Impossible to price without seeing the site: the budget depends on the number of points, the length of cable and how hard the trench is to access. That is precisely why a serious quote is drawn up on site, after a survey.

Our selection criteria

  • warranty 2 years on 94% of the selection
  • certification CE on 100% of the selection
  • material Metal on 88% of the selection
  • technology LED on 78% of the selection
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The Designix team

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