Why roof leak repair works differently in Cambridge
Cambridge 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 Halton 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 Cambridge problem that looks like a chimney fault but starts elsewhere in the building.
Across Elgin Park, Blair, Speedsville, Lang and Preston, 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.
If you live anywhere near the Grand River, the practical takeaway is that a roof leak repair 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.

