Skylight Contractor in Ontario
Skylight work covers more than just cutting a hole in the roof and dropping in a window. A proper job includes framing the opening, flashing it correctly against the roofing material around it (asphalt shingle, metal, or flat membrane), sealing and insulating the shaft, and finishing the interior drywall or trim. Contractors in this category handle new skylight installs, replacements of aging or leaking units, curb-mounted and deck-mounted skylights, tubular daylighting units, and repairs to flashing or glazing that's letting water in. Mississauga's mix of housing stock, from 1970s bungalows to newer subdivisions, means installers often deal with different roof pitches, deck materials, and existing flashing conditions on almost every job.
We list 153 skylight contractors serving the city. Before picking one, look for a company that pulls permits when required, uses flashing kits matched to your actual roof pitch and material, warranties both the unit and the installation labour separately, and can show recent local jobs. Ask specifically how they'll integrate the new flashing with your existing shingles or membrane, since that junction is where most skylight leaks start.
Our scoring weighs review consistency, how contractors respond to negative feedback, business longevity, and verified licensing and insurance details where available. Full detail on how we calculate this is on our methodology page. For a ranked shortlist pulled from this category and related roofing trades, see our best roofing contractors in Mississauga guide.
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All skylight contractor, ranked by score and relevance
We found 1322 businesses offering skylight contractor; 85 met the criteria for the scored directory. The order weighs each business's overall score by how much of its reviewed work is skylight contractor, so a lower-scored specialist can rank above a higher-scored generalist. Filter and sort below, or open the full map view.
Enquiries you submit through our forms may be shared with partner providers who can carry out the work, and we may receive a referral fee. Our rankings and scores are based only on our published methodology and are not influenced by referral fees.
Common questions about skylight contractor
- How much does skylight installation cost in Mississauga?
- A single standard skylight install, including flashing and interior finishing, typically runs from around $1,500 to $4,000 depending on the unit type (fixed, vent-operated, or tubular), roof material, and whether new framing or electrical wiring for a remote-opening unit is needed. Replacing an existing skylight with a like-for-like unit usually costs less than a fresh install through a new roof opening.
- How often do skylights need to be replaced or resealed?
- Most skylights last 15 to 20 years before the seals, flashing, or glazing start to fail. Flashing is often the first thing to go, sometimes within 10 to 15 years, especially if it wasn't matched properly to the roofing material during the original install. Regular roof inspections should include a check of skylight seals and flashing condition.
- What should I expect during a skylight installation?
- A crew typically cuts the roof opening, frames it to code, sets the skylight or curb, installs step and counter flashing that ties into the surrounding roofing, then insulates and finishes the interior shaft with drywall or trim. Most single-unit jobs take one to two days, weather permitting, since the roof is open for part of the process.
- How do I judge whether a skylight contractor did quality work?
- Check that the flashing overlaps correctly with the surrounding shingles or membrane rather than relying on caulk alone, that the interior shaft is properly insulated to prevent condensation, and that there's no visible gap or staining around the frame after the first heavy rain. A contractor who explains their flashing method before starting is usually a good sign.