The local factors behind ice dam prevention in Uxbridge
Two houses on the same Uxbridge street, built the same year, can need completely different ice dam prevention work — and usually do.
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.
Air-sealing and window upgrades have made Uxbridge 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 Goodwood, Uxbridge Village, Coppin's Corners, Leaskdale 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 ice dam prevention 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.