Why emergency roof tarp works differently in Brock
What makes emergency roof tarp in Brock 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.
Older Brock 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 Brock 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 Cannington, Sonya, Wilfrid, Beaverton and Gamebridge, 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 emergency roof tarp 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.

