Cove, Bulkhead and Shadow-Line Lighting: Which Hidden Ceiling Light Suits Your Home?
Cove lighting hides LED strip in a ledge or recess so light washes up across the ceiling. Bulkhead lighting runs strip along a dropped ceiling section, shadow-line lighting sits in the gap where wall meets ceiling, and a recessed channel is a slim line of light set flush into the plaster. All four must be built into the framing or plastering, so choose before your plasterer arrives.
Why hidden ceiling lighting works
Hidden lighting gives you light without a visible source. Instead of looking up into a row of bright downlights, you see a soft glow across the ceiling or a wall. That has three big benefits:
- No glare. Indirect light is comfortable to sit under for hours.
- Rooms feel bigger. Lighting the ceiling makes it feel higher; lighting walls makes rooms feel wider.
- Fewer downlights. A cove often provides enough ambient light that you need only a handful of downlights for task areas.
The four options compared
| Type | How it looks | Best for | What the builder must do | Relative cost |
|---|---|---|---|---|
| Cove | Soft wash of light across the ceiling from a hidden ledge | Living rooms, bedrooms, stepped or tray ceilings | Frame a step or ledge in the ceiling, or build a plaster cove | Medium |
| Bulkhead | Light from the edge or underside of a dropped ceiling section | Kitchens, over beds, above joinery | Frame the bulkhead with a recess for the strip | Medium |
| Shadow-line | A line of light where wall meets ceiling, grazing the wall | Feature walls, hallways, minimalist interiors | Form a shadow-line gap at the junction during plastering | Medium to high |
| Recessed channel | A crisp, flush line of light in the plaster | Modern ceilings, corridors, geometric patterns | Set plaster-in profiles during sheeting and finish around them | High |
Cove lighting
A cove is the classic form of hidden light. The strip sits on a ledge or in a recess near the top of a wall or around a stepped ceiling, facing up or across, so light bounces off the ceiling.
The detail that makes or breaks it is geometry. The strip has to be set back far enough that you can't see it from anywhere in the room, including from the far corner or a mezzanine above. The ledge needs enough height above the strip for the light to spread evenly rather than creating a bright stripe. High-density strip in a profile with a diffuser avoids scalloping and hotspots.
Bulkhead lighting
Bulkheads are dropped sections of ceiling, common above kitchen cabinets, over a bed or around the edge of a room. Strip set into the bulkhead's lower edge can light down onto a benchtop or bedhead, or face up to wash the higher ceiling. Bulkheads also hide services like ducting, which makes them a practical way to add lighting in a renovation.
Shadow-line and wall-grazing lighting
A shadow line is a small recessed gap where the wall meets the ceiling. Put strip in that gap, aimed down, and it grazes the wall below. The effect depends on the surface: on a stone, brick, VJ or textured render wall, grazing light picks out every ridge and joint. On a flat painted wall it gives a soft wash. It's one of the most dramatic effects for the money, but it needs a straight, well-finished wall because grazing light shows every imperfection.
Planning a build or renovation?
Luxe designs and installs architectural lighting across the Sunshine Coast and Brisbane. Book a lighting consultation.
Recessed plaster-in channels and linear lighting
Plaster-in aluminium profiles are set into the ceiling or wall during sheeting, then finished flush so only a slim line of light remains. They can run in long straight lines, form rectangles or follow the architecture. Because the profile becomes part of the plaster, tolerances are tight: lines must be dead straight and joints invisible. This is a job for an electrician and plasterer who have done it before, working together.
Raked ceilings and voids
Tall spaces are harder to light well from above. On raked ceilings, a cove or strip along the top of the walls washing up the rake shows off the shape and avoids hard-to-reach downlights. In double-height voids and stairwells, combine wall washers or grazing strip with a long pendant for scale. Our staircase lighting ideas cover voids beside stairs.
What your builder and plasterer need to know
Hidden ceiling lighting is a building detail as much as a lighting one. Before frame stage:
- Show every cove, bulkhead and shadow line on the drawings, with dimensions.
- Decide who builds what. The carpenter frames it, the plasterer forms and finishes it, the electrician supplies the profile and strip and wires it.
- Plan driver access. A hatch in the ceiling or a nearby cupboard, never sealed behind plaster.
- Agree the sequence. Plaster-in profiles go in during sheeting; cables must be in place before.
- Choose the colour temperature to match the rest of the room (see warm white vs cool white).
Our guide on how to plan lighting for a new home explains where hidden lighting fits in the wider scheme. For the work itself, see our ceiling cove LED lighting, hidden and recessed LED lighting and recessed lighting in Maroochydore pages. Builders can talk to us through our builder and renovation lighting service.
Frequently asked questions
What is cove lighting?
Cove lighting is LED strip hidden in a ledge, recess or step in the ceiling (or high on a wall), pointing up or sideways so light bounces softly across the ceiling. You see the glow, not the light source, which gives even, glare-free ambient light.
What's the difference between cove and bulkhead lighting?
Cove lighting usually washes light up onto the ceiling from a recess or ledge. Bulkhead lighting uses a dropped section of ceiling, often over a kitchen or bed, with strip set into its edge or underside to light down or out. Both need to be framed before plastering.
Can cove lighting be added to an existing ceiling?
Yes, but it means building a new bulkhead, cornice-style cove or plaster-in channel, and then patching and painting. It's simplest during a renovation when ceilings are being worked on anyway. A lighting electrician and a plasterer work together on it.
How do you stop LED strip showing dots in a cove?
Use high-density strip in an aluminium profile with an opal diffuser, and set the strip back far enough in the cove that you can't see it from anywhere in the room. The cove depth and the distance from the ceiling both affect how even the wash looks.
Is cove lighting enough to light a room?
Cove lighting gives soft ambient light, and in many living rooms and bedrooms it's enough for evening use. Most rooms also need task light (reading lights, pendants, a few downlights) for brighter activities.
Get your free lighting quote.
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