The local factors behind ice dam prevention in Kawartha Lakes
Two houses on the same Kawartha Lakes street, built the same year, can need completely different ice dam prevention work — and usually do.
Snow load and ice damming stress the roof-to-wall junction each winter; by spring the sealant that was doing the work has usually torn.
Older Kawartha Lakes 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.
Across Omemee, Little Britain, Bobcaygeon, Fenelon Falls and Kirkfield, 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 ice dam prevention 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.