Chimney Repairs Godalming

Chimney Repairs Services Across Godalming

Godalming has more chimneys per square mile than most Surrey towns, thanks to its concentration of period properties from the 16th century onwards. The Wey Valley's damp climate makes chimney maintenance essential — moisture penetration through failed pointing and flashings is one of the most common causes of internal damp we see across the town.

Chimney Repointing

The lime mortar joints on older Godalming chimneys erode over time, especially on properties built with local Bargate stone. We repoint using lime-based mortars appropriate to the building's age, maintaining breathability and preventing the moisture trapping that cement pointing causes on older structures.

Lead Flashing Replacement

Lead flashings where the chimney meets the roof are the single most common failure point we repair in Godalming. The combination of thermal cycling and the valley's high humidity causes lead to fatigue faster than in drier locations. We strip, re-dress and re-lay lead work to a standard that will outlast the tiles around it.

Chimney Stack Repairs

Cracked pots, loose capping stones and leaning stacks all need professional attention before they become dangerous. We assess and repair chimney stacks at height, and can arrange scaffolding for larger jobs on the taller stacks found on Victorian properties in Frith Hill and the Charterhouse area.

Our Inspection and Assessment Process

Chimney assessment requires access to three vantage points: ground level (binoculars to check pot condition, visible cracks, lean), roof level (close inspection of mortar, stone, brick, flashings), and interior (checking flue condition, fireplace opening for water stains, adjacent walls for damp). Many chimney problems are invisible from the ground — hairline mortar cracks that admit water, lead lifting at chase joints, and pot base deterioration are only visible from scaffold or ladder height. We always inspect from roof level before quoting chimney work.

Materials and Specifications

The correct mortar specification is critical for chimney longevity. For post-1920 brick chimneys, standard 4:1 sand:cement with plasticiser is appropriate. For older brick chimneys built with lime mortar, we use NHL 3.5 hydraulic lime mixed with sharp sand to match the original joint colour. For Bargate stone chimneys — common in the Charterhouse and Frith Hill areas — we use NHL 5 lime mortar which is slightly harder than NHL 3.5 to cope with the greater exposure these elevated chimneys face. Using the wrong mortar type is the single most common cause of chimney damage we repair — cement on stone traps moisture and destroys the masonry from within.

After the Work Is Done

After chimney repairs, we advise on two maintenance items: annual visual inspection from ground level using binoculars (check for new cracks, mortar loss, pot movement, or lead lifting), and chimney sweep schedule if the flue is in use (once per year for wood burners, once every two years for gas fires). Chimney sweeping is not just about fire safety — the sweep's report gives you a professional assessment of flue condition from inside, complementing the external inspection. Between our repair guarantee and regular visual checks, your chimney should give decades of trouble-free service.