Richmond Hill conditions that change how shingle replacement & roof replacement is done
If you mapped our Richmond Hill service calls on a calendar, you would see the same shape every year: the problems are created in February and paid for in November.
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 Richmond Hill home and nowhere else.
Range hoods and basement bathroom fans routinely out-pull an older flue, so the house depressurises and the flue reverses — a Richmond Hill problem that looks like a chimney fault but starts elsewhere in the building.
Across Snowball, Rouge Fairways Rh, Elgin Mills, Headford and Rural Richmond Hill, 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 shingle replacement & roof 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.