How much should I budget for skylight installation in Ottawa?

Skylight installation in Ottawa typically runs between $1,500 and $6,000+ per unit, depending on the skylight type, roof complexity, and whether interior finishing is included. Most homeowners land in the $2,500–$4,000 range for a standard fixed skylight with proper flashing and basic drywall work.

The skylight itself is only part of the cost. The unit can range from $300–$400 for a basic fixed model to $1,500–$2,500+ for a vented or motorized VELUX-style unit with rain sensors. Labour for the roofing portion — cutting the opening, framing, flashing, and weatherproofing — typically runs $800–$1,500. Then there's the interior work: a light shaft (the tunnel between the roof deck and ceiling), drywall, taping, priming, and painting can add another $500–$1,500 depending on attic depth. The deeper your attic, the longer and more expensive the shaft.

Factors that push costs higher in Ottawa include a steep or complex roof pitch, a finished attic space, heritage homes with older roof structures, or premium glazing options like low-E glass or UV coatings. Vented skylights cost more upfront but are worth considering for kitchens and bathrooms where moisture control matters. Tubular skylights (sun tunnels) are a budget-friendly alternative at $800–$1,800 installed — they're ideal for interior rooms or hallways with limited roof access.

Ottawa-Specific Considerations

Ottawa's climate makes proper installation critical. Our freeze-thaw cycles are hard on flashing, and ice damming is a real concern — improper installation is one of the leading causes of roof leaks in this region. Make sure your contractor uses self-adhering membrane around the curb and installs proper flashing kits (not just caulk). A City of Ottawa building permit is typically required for skylight installation since it involves structural roof work. Permits run approximately $150–$300 and processing takes 10–20 business days. Always confirm with the City at 613-580-2424 or ottawa.ca/building.

This is not a DIY project. Cutting roof rafters without proper framing, or improper flashing, can void your roof warranty, cause leaks, and create structural issues. You want a contractor experienced in both roofing and carpentry — ideally someone who has done skylight installs specifically, not just general roofing.

Your next steps: Get at least three quotes, ask each contractor specifically about their flashing method and whether they use manufacturer-supplied flashing kits. Confirm they'll pull the permit. Browse verified roofing contractors in the Ottawa Construction Network directory to find professionals with skylight experience in your area.