Welland conditions that change how roof vent installation is done
If you mapped our Welland service calls on a calendar, you would see the same shape every year: the problems are created in February and paid for in November.
Range hoods and basement bathroom fans routinely out-pull an older flue, so the house depressurises and the flue reverses — a Welland problem that looks like a chimney fault but starts elsewhere in the building.
Air-sealing and window upgrades have made Welland 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 Northgate, Rose City, Sixth Street, Chippawa Park and Empire, 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.