The local factors behind masonry & tuckpointing in Ajax
Two houses on the same Ajax street, built the same year, can need completely different masonry & tuckpointing work — and usually do.
Post-war subdivisions across Durham share the same construction generation, so when one street starts showing the same defect, the neighbours usually follow within a couple of seasons.
Air-sealing and window upgrades have made Ajax 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.
Across South Ajax, Duffin's Bay, Central Ajax, Northeast Ajax and Riverside Ajax, 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 masonry & tuckpointing 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.

