Toronto conditions that change how roof leak repair is done
Most Toronto homeowners book roof leak repair for one reason and discover a second problem on the same visit.
Post-war subdivisions across Toronto share the same construction generation, so when one street starts showing the same defect, the neighbours usually follow within a couple of seasons.
Air-sealing and window upgrades have made Toronto homes far tighter than they were designed to be, and a tight house starves a natural-draft appliance of the make-up air it needs.
Across Deer Park, Greektown, North York Centre, Bayview Village and Willowdale, the housing stock changes street by street, and the correct method changes with it. A century home with a soft-brick stack does not get the same treatment as a 2010 build with a factory-built vent — using one method on both is how systems get damaged.
If you live anywhere near the CN Tower, the practical takeaway is that a roof leak repair visit should start with an assessment, not a tool. Any crew that begins work before telling you what they found is guessing on your behalf.

