How do you position outdoor wall lights to illuminate a pathway?

Fix the fittings so the centre of the light source sits 1.7–2 metres above the finished ground surface. Below 1.7 metres the fitting sits in the sightline of anyone walking past and the source becomes visible glare; above 2.2 metres the light spreads too wide and the pool of illumination between fittings thins out. Measure from the actual paving level, not the wall base — on a sloping path, take the higher side as your reference. On a raised terrace or retaining wall, keep the same 1.7–2 metre band relative to the walking surface, not the wall's own base. When selecting fittings, caged and louvered designs such as outdoor wall lights suit this height band well because they shield the source from direct view at close range. The RIBA homeowners digest recommends planning exterior lighting heights during the landscape design stage rather than retrofitting after paving is laid, which avoids awkward cable routing and mismatched mounting heights.

Space fittings 2.5–3 metres apart on centre as a starting point, then adjust for output. A fitting delivering 300–500 lumens at this mounting height throws a usable pool roughly 2 metres in diameter, so 3 metre spacing keeps the pools just overlapping. If your fittings are brighter — 700 lumens or more — stretch spacing to 3.5–4 metres. If they are dimmer decorative units below 200 lumens, tighten to 2 metres. Two placement rules matter more than the exact figure: stagger fittings on alternating sides of a wide path rather than running a single line, and always mark the start, end and any level change of the route. Stairs, steps and a change of surface material each need their own dedicated fitting regardless of the spacing pattern. On a typical 10 metre garden path that means four fittings at 3 metre centres, with the first and last positioned at the path's ends rather than set in from them.

Specify full cutoff or shielded fittings that direct light downward, and keep the source out of the direct sightline of anyone standing or walking on the path. Use 2700–3000K lamps — cooler colour temperatures above 4000K look clinical outdoors and increase perceived glare at low ambient light levels. Amber or warm-dim options around 2200K suit wildlife-sensitive gardens. Check the backplate sits tight to the wall; a gapped backplate leaks light backwards up the facade and wastes output. Where the path runs alongside seating areas or bedroom windows, choose fittings with side louvres or deep hoods to cut spill. TheCipher-style caged fittings, ribbed glass units and clear-glass LED wall lamps all manage this differently — caged and ribbed glass diffuse the source, while clear glass relies on the internal optics. Good exterior lighting design, as the RIBA homeowners digest sets out, layers path lighting with softer ambient light from the house so the route reads as a guide rather than a runway.

Specify a minimum of IP44 for general pathway positions, and IP65 where the fitting is exposed to driving rain or within 2 metres horizontally of an open water feature such as a pond or pool. BS 7671 divides external zones by proximity to water: fittings inside a zone 1 volume around a pool need at least IP65 and RCD protection on the circuit. All outdoor lighting circuits should be RCD-protected at the consumer unit regardless of zone, and any buried cable must be steel-wire armoured or run in suitable conduit at the correct depth. Work on fixed wiring falls under Part P of the Building Regulations in England and Wales — competent person schemes exist for self-certification, and the HSE introduction to electrical safety sets out the core principles for working safely with fixed electrical installations. Isolate at the consumer unit before any installation work, and verify with a voltage tester rather than trusting a switched-off breaker alone.

Fit a photocell (dusk-to-dawn sensor) for routes used regularly through the evening, or a PIR movement sensor for paths used occasionally. A photocell switches the circuit on at roughly 30–70 lux and off at dawn, which suits a front path used every night; expect around 4,000 operating hours a year on a UK dusk-to-dawn schedule, so specify LED fittings with a rated life of 25,000 hours or more. A PIR suits rear garden paths used intermittently — set the hold time to 1–2 minutes and the detection angle to cover the path without triggering on passing traffic or neighbouring movement. Avoid running pathway lights on a manual interior switch alone; they get left on in daylight or left off when needed. Where fittings are dimmable, pair the sensor with a low-level standby output of 10–20% so the path stays faintly legible between motion events, with full output on trigger. Check the sensor's IP rating matches or exceeds the fitting's, since sensors mounted outdoors fail before the luminaires do.