
A party-wall chimney: whose problem is it, and where does it start?
- A rowhouse stack on or beside the shared wall
- Damp or smells that might be yours, or the neighbour's flue
- Parapet masonry aging differently on each side of the line
Why it happens in New Jersey: New Jersey's older cities put chimneys on party walls and parapets, where stacks serve neighbours jointly and age unevenly. Nor'easters drive rain at angles ordinary weather never manages, and the shared-wall stack that leaks into the other house is a Jersey classic.
What fixes it, and what it costs
Diagnosis starts with mapping what the stack actually serves: flues from two houses sharing one chimney is normal in rowhouse stock, and the answer surprises owners on both sides of the wall. The camera establishes whose flue does what and where the fault sits; the repair follows the finding, and so, fairly, does the bill.
- Level 1 with an annual sweep
- $0 — included
- Level 1 on its own
- $100–$180
























