Toronto conditions that change how downspout extensions & drainage is done
Most Toronto homeowners book downspout extensions & drainage for one reason and discover a second problem on the same visit.
Many Toronto properties were re-roofed at least once without the flashing being re-detailed, leaving a cosmetic seal doing structural work.
Older Toronto stock was built when soft lime mortar and clay liners were the standard; modern high-efficiency appliances vent very differently, and the mismatch causes condensation the original builder never planned for.
Across Bridle Path, Greektown, Deer Park, Hoggs Hollow and Lawrence Park, 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 downspout extensions & drainage 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.