Why chimney crown replacement works differently in Uxbridge
Uxbridge sits in a freeze-thaw belt, and freeze-thaw is what quietly takes apart masonry, flashing and venting.
Infill and renovation work in Uxbridge frequently reroutes venting without re-sizing it, and undersized or over-long runs are the single most common cause of poor draft we see.
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 Uxbridge home and nowhere else.
Across Uxbridge Village, Siloam, Sandford, Coppin's Corners and Zephyr, 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.