The local factors behind creosote removal in Cambridge
Ask any technician who works Cambridge routes and they will tell you the same thing: the callbacks cluster in a handful of predictable places.
Post-war subdivisions across Halton share the same construction generation, so when one street starts showing the same defect, the neighbours usually follow within a couple of seasons.
The swing between a January cold snap and a February thaw can move a masonry assembly enough to open joints that looked sound in the fall.
Across Doon, East Galt, Speedsville, Hespeler and Franklin, 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 creosote removal 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.