Start with what the room is for
Pot lights (recessed lights) are the most requested lighting job in Edmonton homes, and also the easiest to get wrong. The usual mistake is a neat grid dropped on the ceiling without asking what happens underneath it.
Before you count lights, think in three layers. Ambient light fills the room so you can move around safely. Task light lands on a counter, desk or reading chair. Accent light picks out a fireplace, artwork or a textured wall. Pot lights do ambient and accent work well. They are rarely the whole answer for tasks, which is why kitchens also get under-cabinet lighting.
Walk the room and note where people sit, cook, read and work. Mark furniture, cabinets and the TV wall on a sketch. Those spots drive the layout far more than the shape of the ceiling does.
Spacing rules of thumb
For general lighting with common wide-beam wafer lights, a good starting point is to space fixtures about half the ceiling height apart. On a standard 2.4 m (8 ft) ceiling that means roughly 1.2 to 1.5 m between lights. The first row sits about half that spacing in from the wall, so the walls get light without hot spots.
| Ceiling height | Starting spacing | Distance from wall |
|---|---|---|
| 2.4 m (8 ft) | About 1.2 to 1.5 m | About 0.6 to 0.75 m |
| 2.7 m (9 ft) | About 1.4 to 1.6 m | About 0.7 to 0.8 m |
| 3.0 m (10 ft) | About 1.5 to 1.8 m | About 0.75 to 0.9 m |
These are starting points, not rules. A narrower beam angle needs tighter spacing, and a brighter fixture can stretch it. Check the beam angle and lumen output on the spec sheet, not just the wattage.
To light artwork, shelving or a stone fireplace, move the row closer to the wall, roughly 45 to 60 cm out, and use a narrower beam or an adjustable gimbal trim.
Kitchens, hallways and bathrooms
Kitchens. Put the perimeter row over the front edge of the counters, not in the middle of the floor. A light behind you throws your own shadow onto the cutting board. Over an island, centre the lights on the island or use pendants for the task light.
Hallways and stairs. One row down the centre, roughly every 1.8 to 2.4 m, is usually enough. Make sure each stair landing is lit and that switches are at both ends where the layout calls for it.
Bathrooms. A pot light directly over the mirror lights the top of your head and leaves shadows under the eyes. Use a vanity light at the mirror and keep pot lights for general light. A fixture in or over a tub or shower must be rated for that wet or damp location, and your electrician will confirm what the code allows in that zone.
- Keep fixtures clear of ceiling fans, where blades cause a strobe effect.
- Watch for heat runs, plumbing and joists. They often decide the final position by a few centimetres.
- Match the colour temperature across the room. Our colour temperature guide explains the options.
Insulated ceilings and Edmonton winters
On the top floor of a house, the ceiling is the boundary between a heated room and an attic that can sit at -30 C in January. Every hole cut in that ceiling is a chance for warm, moist air to leak upward, condense and freeze. That frost melts in a chinook and shows up as stains, wet insulation or ice damming.
Fixtures in an insulated ceiling must be IC-rated so insulation can safely touch them, and should be airtight so the vapour barrier can be sealed around them. Modern slim LED wafer lights with a separate junction box handle both well and need little depth, which helps in older homes with shallow joists.
Ceilings can hide wiring, gas lines, ducts and plumbing. Leave the cutting and wiring to a licensed electrician, who will also check whether older wiring such as knob-and-tube is in the way. Knob-and-tube must not be buried in insulation.
Switching, dimming and circuits
Group lights into zones you will actually use: a kitchen perimeter, an island, a dining area. Each zone gets its own switch or dimmer, placed at the door you walk in through.
LED pot lights draw very little power, so a living room full of them is a small load. The bigger questions are which circuit can feed them, whether that circuit is already busy, and whether the box locations allow neat wiring. Dimmers must be matched to the fixtures, which our dimmer compatibility guide covers in detail.
Permits and what drives the cost
In Alberta, adding new lighting outlets or circuits generally needs an electrical permit under the Safety Codes Act. In Edmonton the City issues electrical permits; outside the city it may be your municipality or an accredited agency. A licensed electrician pulls the permit and books the inspection.
Cost depends on:
- How many lights and zones you want.
- Access: open joists in a basement are quick, finished ceilings under an attic take longer.
- Attic conditions, insulation depth and the vapour barrier work needed.
- Fixture quality, trims and dimmers.
- Drywall patching and painting if old boxes are removed.
If you are finishing a basement, plan lighting with the rest of the wiring. See our basement renovation service or ask about an LED retrofit for existing fixtures.
Common questions
How many pot lights do I need for my room?
Divide the room into a grid at about half the ceiling height and you will have a reasonable first count. Then adjust for where people work and sit, the beam angle and lumens of the fixture, and any walls or features you want to light.
Can I put pot lights in a ceiling below the attic?
Yes, with IC-rated, airtight fixtures and a properly sealed vapour barrier. That keeps warm, moist air out of the attic, which matters a great deal in an Edmonton winter.
Do I need a permit to add pot lights?
Usually yes, because you are adding new lighting outlets. In Edmonton the City issues electrical permits. Your electrician will take out the permit and arrange the inspection.
Can I replace old halogen pot lights with LED?
Often you can, either with retrofit LED modules that fit the existing housing or by replacing the housing with a slim wafer light. An electrician can check whether the old housings are IC-rated and airtight before deciding.
Codes and permit rules change and every building is different. For work on your system, talk to a licensed electrician and your local permit authority.