What makes shingle replacement & roof replacement in Guelph its own problem
There is a rhythm to shingle replacement & roof replacement work in Guelph: a quiet summer, a frantic October, and a winter of emergencies that were visible in September.
Older Guelph stock was built when soft lime mortar and clay liners were the standard; modern high-efficiency appliances vent very differently, and the mismatch causes condensation the original builder never planned for.
Infill and renovation work in Guelph frequently reroutes venting without re-sizing it, and undersized or over-long runs are the single most common cause of poor draft we see.
Across Onward Willow, Brant, Old University, Village By The Arboretum and Kortright, 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 University of Guelph, 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.