What makes smoke chamber parging in Markham its own problem
The honest summary of smoke chamber parging in Markham is that the work is simple and the diagnosis is not.
Air-sealing and window upgrades have made Markham homes far tighter than they were designed to be, and a tight house starves a natural-draft appliance of the make-up air it needs.
Wind loading off Lake Ontario pushes driving rain against the south and west faces of a house, which is why water entry so often shows up on one side of a Markham home and nowhere else.
Across Cathedraltown, Wismer, Cornell, Rouge Fairways and Commerce Valley, 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 smoke chamber parging 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.