Pickering conditions that change how chimney waterproofing is done
Homeowners in Pickering tend to call us at one of two moments: the week before guests arrive, or the week after something started smelling wrong.
Range hoods and basement bathroom fans routinely out-pull an older flue, so the house depressurises and the flue reverses — a Pickering problem that looks like a chimney fault but starts elsewhere in the building.
Infill and renovation work in Pickering 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 Highbush, Liverpool, Amberlea, Duffin Heights and West Shore, 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 chimney waterproofing 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.

