Understanding Pot Light Installation: Planning Layout for an Even Result | D&D Interior Services Blog
Recessed (pot) lights are among the most popular contemporary lighting choices for Ontario interiors. When laid out correctly, they provide even, flexible illumination; when laid out poorly, they create hot spots, shadows, and awkward visual patterns.
Spacing is the fundamental layout variable. A common rule of thumb: space lights at half the ceiling height. For 2.4-metre ceilings, place lights 1.2 metres apart. This provides reasonably even coverage for general lighting.
Key Considerations
Distance from walls affects how the room reads. Perimeter lights placed 500-700mm from the wall create balanced illumination and avoid the 'spotlight' effect of wall-hugging placement. Lights too close to walls create visible scalloping on the wall surface.
Task area placement: lights above task areas (kitchen counter, desk) should be directly over the work surface, not behind the user. A light behind someone working at a counter creates a shadow on the work surface.
Getting Started
Ceiling fixture and light interaction: pot lights near ceiling fans create visible strobe effects as blades pass through the beam. Maintain minimum distance from ceiling fan blade paths.
Insulation contact (IC) rating is required in Ontario for pot lights installed where ceiling insulation exists above. IC-rated fixtures can be in direct contact with insulation; non-IC fixtures must maintain clearance that compromises insulation effectiveness.
Permit requirement: adding new pot lights requires an ESA electrical permit for the new wiring. Many homeowners are surprised to learn that light fixture installation requires permits — but additional circuits, new rough wiring, and new junction boxes all fall within regulated electrical work.