Lighting · Kitchen · Renovation Detail
You have just spent forty thousand dollars on a kitchen renovation. New cabinetry, quartz countertops, a beautiful backsplash. The installer finished the pot lights last week — six of them, evenly spaced across the ceiling, the same 6“ fixtures the electrician always uses. And on the day the renovation is complete, something is wrong. The kitchen looks bright but somehow flat. The countertops are in shadow. The room does not feel the way you imagined it would.
You just experienced what happens when lighting is treated as an afterthought rather than a design decision. The pot lights are doing exactly what they were installed to do — produce light. They are not doing what the room needed them to do: create depth, eliminate shadows, reveal the true colours of your materials, and change how the space feels at different times of day.
Almost every renovation in Ontario includes pot lights. Almost nobody involved in the renovation — the homeowner, the contractor, or the electrician — has a complete conversation about what those pot lights need to do before they go in the ceiling. And once they are in the ceiling, moving them costs almost as much as installing them correctly the first time.
Pot light selection involves four distinct decisions: the size of the fixture, its position relative to the ceiling height, its colour temperature, and the layering of ambient, task, and accent light. Most renovations make one of these decisions — which fixture to buy — and treat the rest as default. The result is a room with light in it. Not a room that is lit.
The choice between a 4-inch and a 6-inch pot light is not an aesthetic preference. It is a function of ceiling height and the beam angle that results from each fixture size.
A 4-inch pot light typically produces a beam angle of around 30 degrees. In an 8-foot ceiling, that beam spreads to approximately 60–70 centimetres at floor level — a tight, focused circle of light. In a 9-foot ceiling, the same fixture spreads to about 80 centimetres. The coverage is modest, intentional, and precise.
A 6-inch pot light typically produces a beam angle of around 55–60 degrees. In a 9-foot ceiling, that beam spreads to approximately 150 centimetres at floor level — a wide, generous wash. In an 8-foot ceiling, the same fixture creates a harsh, overlapping pool of light with a bright hot spot directly beneath it and inadequate coverage at the edges.
The science. A 4“ fixture at 8–9ft delivers focused, efficient coverage. A 6“ fixture on the same ceiling creates an oversized pool with a harsh centre and dark edges.
There is a simple formula for spacing pot lights that is almost never used in residential renovation. It produces results that are dramatically better than the default grid layout that most electricians fall back on.
From the wall: Place the first row of pot lights at a distance equal to half the ceiling height. In a 9-foot ceiling, the first light goes 4.5 feet from the wall. This is the position that puts the centre of the beam at the junction between the wall and the floor — the corner of the room — washing both surfaces with light and eliminating the dark edges that a centre-biased layout creates.
Between fixtures: Space subsequent lights at a distance equal to the full ceiling height. In a 9-foot ceiling, lights are 9 feet apart from each other. This creates even, slightly overlapping pools of ambient light across the floor plan without the harsh, over-lit uniformity of a tighter grid.
H = ceiling height. First light at H÷2 from the wall. Subsequent lights at H from each other. In a 10ft ceiling: 5ft from walls, 10ft between fixtures. Simple, consistent, dramatically better than a grid.
Compare this to the default approach: an electrician who spaces fixtures evenly across the ceiling creates an even wash that illuminates the middle of the room while leaving the walls dark and the counters in shadow. The room has light. It does not have the right light in the right places.
Almost nobody asks about CRI when choosing pot lights. Almost everybody should.
CRI — Colour Rendering Index — measures how accurately a light source renders colours compared to natural daylight. A CRI of 100 means the light shows colours exactly as they would appear in sunlight. A CRI of 80 means colours are subtly distorted. A CRI of 70 means colours are noticeably wrong.
Most budget pot lights sold in Ontario have a CRI of 80–82. This means the red in a tomato looks slightly orange. The green in a salad looks slightly yellow. The warm cream of your quartz countertop looks vaguely grey. The beautiful kitchen you renovated looks slightly wrong in a way you cannot name but your eye registers every single time you cook.
The difference between an 80 CRI fixture and a 90+ CRI fixture is typically $3–8 per unit at retail. In a kitchen requiring twelve fixtures, the upgrade from mediocre to excellent colour rendering costs under a hundred dollars. It is one of the highest-value decisions in any renovation and it is almost never made intentionally.
When selecting pot lights, specify: the fixture size matched to your ceiling height, a CRI of 90 or higher, and a colour temperature matched to the room’s use. These three specifications cost nothing extra to ask for and produce a result that is visibly, measurably better. Most suppliers carry fixtures that meet all three. Most homeowners never ask.
Colour temperature is measured in Kelvin. Lower numbers produce warmer, yellower light. Higher numbers produce cooler, bluer light. The choice of colour temperature is one of the most powerful design decisions in a renovation — and it is almost always made by default.
The most common mistake in Ontario renovations: 4000K pot lights in the kitchen and living areas. A 4000K light is efficient, bright, and completely wrong for a space designed for cooking, eating, and living. It makes the room feel like a commercial kitchen or a hospital corridor. Food looks pale. Skin tones look harsh. The beautiful renovation you planned feels institutional rather than residential.
For most Ontario home renovations: 2700K in bedrooms and living rooms. 3000K in kitchens, bathrooms, and home offices. If you remember one number from this article, make it 3000K for the kitchen. It is the temperature that makes food look appetising, finishes look rich, and the room feel like a home rather than a workspace.
Pot lights are ambient light — they provide the general illumination of a room. They are one layer. A properly lit room requires three.
Ambient only. Six pot lights in a grid. The room is bright but flat. Counters are in shadow. No warmth, no depth, no hierarchy.
Three layers. Ambient pot lights for general illumination. Task lights positioned over work surfaces. The result has depth, function, and atmosphere.
Ambient light (pot lights) illuminates the room generally. It allows you to move safely and see broadly. It is the background layer. In most renovations, it is the only layer.
Task light illuminates specific work surfaces: the kitchen counter, the bathroom vanity, the desk. Task lights in the kitchen should be positioned approximately 60–75 centimetres from the wall — directly over the work surface rather than over the centre of the room. A pot light positioned over the centre of a kitchen island illuminates the top of your head. A pot light positioned over the counter illuminates the counter. The distinction is not subtle.
Accent light creates depth, drama, and the quality that separates a renovated room from a well-designed one. Under-cabinet lighting that washes the backsplash. In-cabinet lighting that makes glassware glow. A pendant over the island that creates a visual anchor. A wall sconce that transforms a bathroom from functional to beautiful. Accent light is rarely in the renovation budget because nobody asks for it in the brief. It is almost always the detail that people notice when they walk into a beautifully lit home.
“Every renovation installs pot lights. Fewer than one in ten renovations designs the lighting. The difference is visible the moment you walk in the door.”
What is the ceiling height in each room, and what fixture size does that height require? This question costs nothing and prevents the most common pot light mistake in Ontario.
Where are the work surfaces, and where should the task lights go to illuminate them without creating shadow? The electrician knows how to install a light where you specify. They will not typically tell you that the light you have specified is in the wrong position for the work that happens underneath it.
What colour temperature is specified, and does it match the use of the room? If the answer is “whatever came in the box,” it is worth a five-minute conversation with your supplier before installation.
Is the ambient lighting circuit on a dimmer? A room lit at 100% from pot lights alone is a room that has only one mood. A dimmer switch costs twenty dollars and gives every room in the house the ability to transition from task lighting to evening ambience. It is one of the highest-value, lowest-cost decisions in any renovation and it is consistently overlooked.
Lighting design begins with a conversation about how each room is used, at what times, and for what activities. The fixture selection follows from that conversation. We include lighting design in every renovation brief we write — because it changes the result more than almost any other single decision. The Discovery call is free.