Different homes, different chimney construction
Hendon includes period houses, inter-war properties and later buildings. Chimney dimensions, brick type, roof pitch and access conditions vary, so specifications should respond to the actual property rather than rely on a generic area package.
Signs worth investigating
- Mortar joints are open or deeply recessed
- Brick faces are flaking or breaking away
- Flaunching is cracked around the pots
- The stack appears to lean or separate
- Damp worsens after wind-driven rain
These observations indicate the need for assessment, not a predetermined remedy. Compare general repair, repointing and rebuilding before deciding.
Planning the quotation
A useful scope should identify the elevations to be repaired, brick replacement allowance, flaunching and pot work, interface with leadwork and safe access. Confirm whether waste removal and making good adjacent roof coverings are included.
Repair, repoint or rebuild?
Local repointing can suit a straight, stable stack with sound bricks. Isolated spalled units may be replaced individually. If cracks pass through several courses, the upper stack is loose or movement is visible, a partial or full rebuild may be a more proportionate long-term specification.
Unused and active flues
Before changing pots or caps, confirm which flues serve fires, stoves or ventilation. An unused flue may still need airflow, while an active appliance requires a suitable terminal and competent advice. Treating every pot the same can create avoidable moisture or performance problems.
Evidence after completion
Photographs should show the prepared repair area as well as the finished masonry. Ask for views of all accessible stack faces, pots, flaunching and leadwork. This record is particularly valuable where the work cannot be checked from the garden.