Why shingle replacement & roof replacement works differently in Cobourg
What makes shingle replacement & roof replacement in Cobourg unusual is not the technique, it is the age spread of the housing: a single route can cover 1910 brick and 2019 factory-built 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.
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 Downtown Cobourg, Northam, Legion Village, Burnham Street and Division Street, 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 shingle replacement & roof replacement 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.