Chimney Repairs Shoreham-by-Sea

Chimney Repair Detail — Shoreham-by-Sea

Repointing and Mortar

Shoreham chimney repointing spans the full range from standard hydraulic mortar on post-war estate properties to carefully matched lime mortar on the flint and stone buildings of the old town. Properties around Church Street, East Street and the lanes adjacent to St Mary de Haura require lime mortar as a matter of conservation best practice — and in many cases as a planning requirement for listed buildings. We carry hydraulic lime as standard on every Shoreham van and apply it routinely on old town jobs without needing specific instruction.

Lead Flashings

Lead flashing on Shoreham chimney stacks is affected by both Channel salt air and Adur estuary humidity — the double coastal influence in BN43 means lead oxidises faster than most other locations in our coverage area. We replace all Shoreham chimney lead with Code 4 dressed on site, with an extended first section to account for the above-average oxidation rate. Lead sealant alternatives are not used on any chimney flashing in our coastal work.

Flaunching and Pots

The flaunching — the sloped concrete bed at the top of the stack that holds the chimney pots — is a common failure point on Shoreham-by-Sea properties. Frost cycling and coastal moisture cause it to crack and lift, allowing water into the top of the stack. We replace failed flaunching using a waterproof mortar mix and reset or replace pots as required. Unused stacks are capped with breathable half-cowls that exclude water while maintaining airflow within the flue.