What size and spacing of potlights works best for a long narrow hallway in a Roncesvalles home?

For a long narrow hallway, 4-inch potlights spaced 6 to 8 feet apart in a single centred row is the standard approach — and in most Roncesvalles homes, that means working around some specific older-construction challenges.

Hallways are one of the trickier lighting scenarios because the space is asymmetrical — long in one direction, tight in the other. The goal is even illumination without hot spots directly under each fixture or dark gaps between them. A single row of fixtures centred on the ceiling width handles this well. For a typical Toronto hallway that's 3 to 4 feet wide, 4-inch fixtures are the right choice — 6-inch fixtures are oversized for the space and create a visually heavy look on a narrow ceiling. If the hallway is unusually wide (5+ feet), 6-inch fixtures become reasonable.

Spacing and placement math is straightforward. Divide your hallway length by the number of fixtures you're planning, aiming for 6 to 8 feet between lights. A 24-foot hallway works well with 3 or 4 fixtures. Start your first fixture roughly 3 to 4 feet from the end wall — this prevents a dark dead zone at the entry or staircase landing. For a hallway with a door partway along it, plan fixture placement so you're not centring a light directly over a door frame, which looks awkward and can interfere with trim.

Roncesvalles-Specific Considerations

Homes in Roncesvalles are predominantly pre-war and early post-war stock — semi-detached and detached brick houses built between 1910 and 1950. The hallway ceilings in these homes are typically plaster on wood lath, not drywall, which changes the installation significantly. Cutting into plaster requires a different approach than drywall — plaster is brittle, cracks easily, and the lath behind it can be unpredictable. An experienced electrician will use a hole saw carefully and may need to reinforce around the opening. Expect more time and cost per fixture compared to a newer home.

Insulation is the other major variable. Many Roncesvalles homes have had insulation blown into the attic over the decades, sometimes heavily. If the hallway ceiling is below an insulated attic space, your electrician must use IC-rated (insulation contact) airtight potlights — specifically ICAT-rated fixtures. Non-IC fixtures surrounded by insulation are a fire hazard and a code violation. In Ontario, the Ontario Electrical Safety Code and Ontario Building Code both require IC-rated fixtures where insulation contact is possible. Your electrician will confirm attic access and insulation conditions before specifying the fixture type.

Wiring in these older homes also deserves attention. If the hallway still has knob-and-tube wiring or cloth-insulated circuits, your electrician cannot simply splice new potlight wiring onto that old system — it needs to be run back to the panel on a proper NMD90 circuit. This is both a code requirement and a safety necessity. A hallway lighting circuit is typically a 15-amp circuit using 14/2 NMD90 wire, which handles the load of LED potlights easily (most draw only 8 to 12 watts each).

Practical Tips

LED potlights are the only sensible choice in 2025 — they run cool (important in insulated ceilings), draw minimal power, and last decades. Choose fixtures with a colour temperature of 2700K to 3000K for a hallway — this is warm white light that feels welcoming rather than the harsh blue-white of 4000K+ fixtures used in garages and utility spaces. Dimmability is worth adding; a dimmer switch on the hallway circuit lets you run low light overnight without turning everything off.

For a hallway circuit with 4 to 6 LED potlights, an ESA permit is required if this is a new circuit or an extension of an existing circuit. Permit cost runs $100 to $200 for a simple residential lighting circuit. Installed cost for potlights in a Roncesvalles home typically runs $250 to $400 per fixture when you factor in the plaster ceiling work, wiring, and permit — higher than a newer drywall home where the same work might run $150 to $250 per fixture.

A licensed electrician is essential here — not just for the permit and code compliance, but because navigating plaster ceilings, older wiring, and attic insulation conditions in a pre-war home requires real experience. If you're ready to move forward, Toronto Electrical Repair can match you with a local licensed electrician familiar with Roncesvalles housing stock — the matching service is completely free.