01 · c. 1780-1910
Georgian and Victorian city-centre stock
Georgian townhouses and Victorian terraces through the historic core around Market Square, Castle Street, Bow Street and Antrim Street. Some converted linen warehouses on Bridge Street and Linenhall Street. Solid 9-inch brick or stone walls, high ceilings in the Georgian examples, suspended timber floors.
Typical setup
Modernised examples run a combi in the kitchen or a basement utility; some still have a system boiler with an airing-cupboard cylinder. Pipework is mixed: original copper runs from 1960s-80s retrofits with later 15mm replacements around radiators. Condensate discharge routing through a party wall or to a back yard gully is often the constraint.
Common issues
- Lead supply pipe from the main still present in some properties, visible at the stopcock.
- Original cast-iron soil stacks where condensate can't discharge safely.
- Fireplaces closed up without capping the chimney, causing damp and draught on the back boiler route.
- Narrow Georgian glazing proportions make compliant flue positioning difficult on the front elevation.
- Party-wall constraints on a terraced Georgian are stricter than on a Victorian brick terrace.
Best practice on replacement
Survey incoming flow rate and pressure first. If flue position is constrained by conservation-area rules on the front elevation, route to the rear and accept a longer internal gas run if needed. Replace the internal stopcock. For listed buildings, confirm Listed Building Consent routes with the council before any external penetration. Retain original rads where possible; specify low-temperature flushing on period cast iron.
