A skylight contractor cuts into your roof deck to install, replace, or repair a skylight unit, then handles the flashing and sealing work that keeps that opening watertight. This is a different skill set from general roofing: it involves framing a proper curb or deck-mounted seat, matching flashing to your roof material (asphalt shingle, metal, or flat membrane), and getting the interior drywall and insulation detail right so condensation doesn't become a ceiling stain. In Toronto, this work also has to account for freeze-thaw cycles, ice damming along the roofline, and the OBC permit rules that apply once you're altering the roof structure.
What this work typically covers
- New skylight installation, including cutting the roof deck and building a curb
- Replacing an aging or fogged skylight unit (glass seal failure is common after 15-20 years)
- Re-flashing around an existing skylight that's leaking
- Sealant and gasket repairs on units that are otherwise sound
- Adding a light shaft or well to bring daylight down through an attic or vaulted ceiling
What to check before you hire
- Manufacturer certification. Brands like Velux and Fakro often require certified installers for the warranty to hold, so ask directly.
- Flashing kit match. The flashing should be the kit made for your specific skylight model and roof pitch, not a generic bent-metal fix.
- Permit handling. Structural openings in the roof deck generally need a permit in Toronto; a contractor who shrugs this off is a red flag.
- Written warranty on labour, separate from the manufacturer's product warranty, ideally 2+ years on workmanship.
- Local references for a skylight job specifically, not just general roofing work.
We track all 77 skylight contractors listed for Toronto and score each one on verified reviews, licensing and insurance signals, response time, and consistency of workmanship across jobs. That scoring feeds our ranked shortlist at best roofing contractors in Toronto, where you can see how these skylight specialists stack up against full-service roofers. For the full breakdown of how we weigh and verify each factor, see our methodology.
