Why roof vent installation works differently in Uxbridge
Uxbridge sits in a freeze-thaw belt, and freeze-thaw is what quietly takes apart masonry, flashing and venting.
Salt spray and road grit carried by winter wind accelerate corrosion on exterior metal components far faster in Durham than the manufacturer's rating assumes.
Range hoods and basement bathroom fans routinely out-pull an older flue, so the house depressurises and the flue reverses — a Uxbridge problem that looks like a chimney fault but starts elsewhere in the building.
Across Zephyr, Siloam, Uxbridge Village, Coppin's Corners and Sandford, 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 roof vent installation 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.