Lighting a room that also cooks

A modern kitchen is a living room with a hob in it, and the lighting has to answer to both jobs without asking you to choose between them.

The lighting that makes a kitchen work at eight in the morning is the wrong lighting for the same kitchen at nine in the evening. Bright, cool, task-focused light is right when you are chopping onions and reading the back of a jar. It is entirely wrong when the same people are still at the table an hour after supper, or on the sofa the other end of the room. Most kitchens we are asked to look at have been lit as workshops. They dim politely from bright to less bright, but they never become soft, and they never become still.

The answer is not more fittings or fewer. It is layers, warmth, and a switching plan that lets the room behave like two different rooms without anyone getting up.

The four layers

We work to four layers, and we specify them separately from the outset so the electrician’s first fix is not a guessing game.

Task lighting is the light that lands on the work surface. Under-cabinet LED strip, continuous rather than dotted, mounted at the front edge of the wall unit so the light falls on the front of the worktop rather than the splashback. Over the hob, either integrated into the extractor or a dedicated downlighter aimed at the pan, not at the cook’s forehead. Over an island, task light comes from decorative pendants low enough to actually light the top, or from directional downlighters if the pendants are ornamental only.

General lighting is the ambient wash that stops the room reading as a series of pools. Recessed downlighters on a wide beam, laid out to the ceiling and the cabinets rather than in a single military row down the middle. In a room with generous ceiling height and a good centre point, a single pendant can do the same job. It rarely does it alone.

Accent lighting is what makes the room feel considered when the task lights are off. In-cabinet strip behind glazed doors, plinth lighting that grazes the floor, a discreet strip above the wall cupboards that lifts a ceiling and softens the top edge of the run. None of these are needed to see by. All of them change the room after dark.

Decorative lighting is the pendant over the table, the wall lights either side of a chimney breast, the picture light over a piece the client already owns. These are furniture, not fittings.

Colour temperature

The trade default for a kitchen is 3000K. We specify 2700K throughout, without exception, on every fitting from the under-cabinet strip to the pendants over the table.

3000K reads as clean and slightly clinical. It flatters stainless steel and white worktops and it looks correct in a showroom. In a real kitchen with painted timber, oak, brass or unlacquered nickel, and a client who wants to sit down in the room in the evening, 3000K is cold. It ages the paint, greys the timber, and makes the room feel like a place of work at the hour it should feel like a place to be.

2700K is warmer, closer to the tungsten light most people grew up with, and it holds the colour of paint and timber the way the room was designed to be seen. It costs nothing extra to specify. It is the single most important decision after the layout.

Where the client wants to be able to shift towards cool light for prep work, tunable-white fittings are available and we will specify them for task circuits only, ranging roughly 2700K to 4000K. General and decorative circuits stay fixed at 2700K.

Everything dims, on separate circuits

Every fitting in the room is on a dimmer. Every layer is on its own circuit. Task, general, accent, decorative — four circuits minimum, more if the room is long or has a distinct dining end.

The reason is simple. Dimming the whole room at once produces a smaller version of the same light. Dimming layers independently produces different rooms. General down to nothing and accent full up is one room. Task on full and everything else off is another. The point of the wiring is to make those transitions available without thinking about them.

We ask for trailing-edge dimming as standard on LED loads, and we specify the driver and dimmer together to avoid the flicker and buzz that come from mismatched pairings. This is a conversation between the lighting designer, the electrician and us at first fix, not something to leave to site.

Four scenes, minimum

We ask the electrician for four programmed scenes on the keypad. There can be more. There cannot be fewer.

Cook is task and general at working level, accent off, decorative low. Wash-up is task over the sink and one general circuit; the rest of the room falls away so whoever is clearing up is not doing it on stage. Eat is decorative on the table at full, general low, accent on, task off. Evening is accent and plinth up, decorative low, general off, task off — the setting the room lives in from about nine until bed.

Scenes are not a luxury. On a room with four circuits and a decent dimmer platform they are the difference between a kitchen that behaves and a kitchen that requires a set of instructions.

Where sockets and switches actually live

The default trade positions — sockets at 150mm above worktop, switches by the door at 1050mm — are a starting point, not an answer.

We move switches to where the hand goes. The scene keypad sits by the principal entry to the room and, in most kitchens, is repeated by the door to the hall or garden so the last person out is not walking back across a dark floor to a single plate. Sockets on the worktop are set in pairs and located to the appliances that will actually sit there — a run of five singles spaced evenly is a survey done by ruler, not by cook. In an island, we prefer pop-up sockets set into the worktop or, if the client would rather not have them on show, sockets on the end panel behind a hinged veneered flap that matches the cabinet.

What we build in, what the electrician does

Under-cabinet drivers sit inside the wall cabinets, in a service void we cut into the top rail during making, wired back to a junction accessible without dismantling anything. Plinth-lighting drivers sit in the plinth void, again reachable. In-cabinet drivers sit in the top of the relevant cabinet, on a removable panel. We route the wiring through the cabinet backs and gables during construction; the electrician terminates at first fix and commissions at second.

The rule we work to is that no driver is ever inaccessible, and no cable is ever pinched behind a cabinet that has to come out to reach it. It is a small discipline that saves someone a bad afternoon in ten years’ time.

Where it usually goes wrong

Three mistakes recur. Pendants over an island hung to the ceiling height rather than the worktop, so they light the room but not the top and cast the cook in silhouette — we hang decorative pendants with the bottom of the shade roughly 750mm above the worktop, adjusted to the shade and the client. A single row of downlighters marching down the centre of the room, which produces the airport-corridor effect and lights nothing usefully. And cold white LEDs — 4000K or higher — bought on price and left on a single switch, which flattens paint, greys timber, and turns the room into a place nobody sits in after dark.

None of these are difficult to avoid. They are avoided by drawing the lighting scheme at the same time as the cabinetry, by the same people, and by treating the room as a room.

A kitchen we have made is expected to hold its finish and its geometry for decades. The light is the medium through which those things are seen. Get it wrong and the paint you specified, the timber you chose, the proportion you drew are all invisible after five o’clock. Get it right and the room does the two jobs it was asked to do without effort, and without anyone noticing the wiring behind it.