New Tecumseth conditions that change how chimney crown replacement is done
Most New Tecumseth homeowners book chimney crown replacement for one reason and discover a second problem on the same visit.
Wind loading off Lake Ontario pushes driving rain against the south and west faces of a house, which is why water entry so often shows up on one side of a New Tecumseth home and nowhere else.
Post-war subdivisions across York share the same construction generation, so when one street starts showing the same defect, the neighbours usually follow within a couple of seasons.
Across Ballycroy, Colgan, Briar Hill, Nicolston and Loretto, 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.
the practical takeaway is that a chimney crown replacement 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.