The local factors behind wood stove installation in Markham
Two houses on the same Markham street, built the same year, can need completely different wood stove installation work — and usually do.
Many Markham properties were re-roofed at least once without the flashing being re-detailed, leaving a cosmetic seal doing structural work.
Older Markham 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 Commerce Valley, Angus Glen, Cornell, Old Markham Village and Bullock, 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 Main Street Unionville, the practical takeaway is that a wood stove installation 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.