IP65 light fittings: the right rating for terraces and bathrooms

Read the two digits separately: 6 for dust, 5 for water jets. An IP65 light fitting fears neither dust nor a hose, but it does not go underwater. Bathroom: IP65 around the shower, IP44 on the rest of the wall. Sheltered terrace: IP44. Facade lashed by rain: IP65.

What does IP65 mean on a light fitting?

The first digit, 6, means dust cannot get in. The second, 5, means the fitting withstands water jets sprayed from a hose in every direction. In practice, it lives outside in the rain and near a shower. It does not live submerged, nor in salt, nor in chlorine.

IP65 definition: the two digits, decoded

• First digit, dust: from 0 to 6. At 6, no penetration into the enclosure.
• Second digit, water: from 0 to 8. At 5, the hose jet. At 7, temporary immersion. At 8, prolonged immersion.
• IP65 in plain terms: dust-tight and jet-tight, not immersion-tight.

Across a survey of 250 references in our catalogue as of 30 October 2026, 94% are IP20, 3% are IP65 and 2% are IP44. The rating that holds up outdoors therefore has to be sought out explicitly; it is not found by chance in the middle of a shelf.

What IP65 does not protect against: salt, chlorine, immersion

An IP65 fitting by the sea rusts from salt long before it takes on water. Pool chlorine attacks seals and finishes faster than a downpour. And a fitting placed in a hollow that holds water ends up drowned, rating or no rating.

• Salt: rinsing with clean water twice a year limits deposits on the coast.
• Chlorine: pool splash wears seals far more than driving rain.
• Immersion: in a basin or a sunken floor, it was IP67 or IP68 you needed.

Around a shower, a bathroom lighting project planned zone by zone avoids over-protecting a dry wall.

Which light fitting for a bathroom?

An IP65 wall light or spotlight in the zone around the shower, an IP44 on the rest of the walls, and a light source above the mirror to light the face. Near water, class II is added to IP65: double insulation, no earth to connect.

Near the shower: IP65 and class II

The wet zone is measured around the tray and the shower head, not across the whole room. A fitting placed there receives direct spray: it is the only place where IP65 is truly justified.

• IP65 in the spray zone, at wet-hand height.
• IP44 a little further away, on the wall that stays dry.
• Class II: double insulation, the fitting needs no earth connection.

In the exposed zone, the selection of IP65 wall lights settles the question with a single reference.

Further from the tray, an IP44 model is enough and opens up the choice: IP44 wall lights for a spa-style bathroom keep up the look without over-protecting.

IP65 bathroom light fitting: the mistakes that cause rust

A badly fitted IP65 rusts as fast as an IP20. Water rarely comes from the shower: it comes from an over-compressed seal, a dripping cable and a housing pressed against a cold wall.

• Crushed seal: overtightened, it no longer sits flat and lets spray through.
• Cable at a low point: water runs down the wire to the cable gland.
• Cold wall: repeated condensation on a fitting pressed against the tiles.
• Bulb changed on its own: the rating belongs to the fitting, never to the lamp.

An IP65 bulb in an open housing protects nothing, and the reverse is true too. It is the fitting's seal that decides.

A new model that blisters after one winter almost always hides a fitting error: the bathroom lighting mistakes go through them one by one.

Which IP rating for an outdoor light fitting?

IP44 on a covered terrace or under a canopy, IP65 as soon as rain hits the facade head-on, IP67 on a pontoon or at the edge of a pool. By the sea, the rating is not enough: salt demands a material and maintenance that keep up.

Facade, terrace, seaside: the rating by exposure

The right question is not which rating is best, but what that spot is exposed to. A wall under a roof overhang and a facade in full wind do not need the same protection.

• Porch and covered terrace: IP44, spray stays oblique.
• Unprotected facade: IP65, rain arrives horizontally and sweeps the wall.
• Seaside: IP65 plus regular rinsing, salt attacks finishes before seals.
• Poolside: IP67, chlorinated splash is more aggressive than a downpour.

This classification by exposure, zone by zone, is set out in the right protection by zone. It is the most useful reference before fixing a fitting.

On a terrace to be fitted out, a terrace and garden lighting project starts from the use, dining or circulation, before choosing ratings.

For walls, the range of IP65 outdoor wall lights covers facades in full wind without giving up on design.

On a pergola or a railing, IP65 outdoor LED string lights bring the ambient light that wall lights do not provide.

What is the difference between IP44 and IP65?

IP44 stops solid objects over 1 mm and ordinary water spray. IP65 stops all dust and withstands a hose jet. Between the two there is not a nuance of comfort: there is a sheltered wall and an exposed wall.

Unsure about the exact zone of your bathroom or terrace? The quickest way is to contact the Designix team with two photos: the answer fits in one message.

How to install an outdoor light fitting without ruining it?

Place it under a roof overhang or a canopy, never in a hollow that holds water, and let the seal breathe. The weak point of an installation is almost never the fitting: it is the cable gland, the low point of the wire and condensation.

IP65 outdoor spotlight: where it holds up, where it disappoints

A recessed ground spotlight does very well at the edge of a terrace, provided the drainage under the housing stays clear. Recessed into a coping or a wall that takes on water, it becomes a pocket.

• Terrace edge: its place, aimed at the facade or a border.
• Exposed wall: a surface-mounted wall light sheds water better than a recessed one.
• Sloping ground: water must run under the housing, never stagnate around it.

The details of installation by zone are set out in choosing a waterproof spotlight by zone.

Along a path, IP65 outdoor bollards light the way without drilling into the wall or creating a water pocket.

How many lumens to light a terrace?

A dining terrace needs clear light above the table and a softer design around it. The rule fits in one sentence: count useful lumens, not watts on the packaging.

• Table: a lowered light source that lights the plates without dazzling.
• Circulation: low points evenly spaced, with no dark gap.
• Ambience: 2700 K to 3000 K for a warm terrace.
• Glare: never a bare source in the line of sight.

The calculation by surface and by use is detailed in lighting your terrace well.

To turn an intention into power, the useful reference is LED power for outdoor lighting.

A terrace floor lamp on its own handles the table and the ambience, with no wall wiring.

On the same survey of 250 references as of 30 October 2026, 85% carry a two-year warranty. And if hesitation persists between two models, the reviews on the Designix Google listing can be checked in one click.