Ongoing water ingress beneath a parapet gutter to the north and flat roof area to the south had recently resulted in damage to interior finishes. Naturally, the homeowner was keen to establish both the source of the water ingress and the extent of damp affected interior finishes to resolve the issue as swiftly as possible.
As access to several of the flat roof areas and the historic northern parapet gutter was not possible at the time of survey, we utilised a lightweight drone to allow for high-level imagery to be captured and analysed. This revealed widespread cracks and fissures to the mastic asphalt finish over the majority of flat roof areas which was deemed to be at/nearing the end of its effective service life. Evidence of several campaigns of repair to the parapet gutter lining were also identified and found to have largely failed at the time of the survey leaving the structure below vulnerable to ongoing water penetration.
To the south, inadequate detailing of a suspended tile terrace over the first-floor flat roof had concealed and compounded issues of material failure resulting in active water penetration. The extent of the damage was investigated in further detail internally via the deployment of thermal imaging equipment and fibre-optic borescopes within ceiling voids.
Our team offered tailored remedial advice to inform a refurbishment strategy that was both sensitive to the historic nature of the building and practical to implement.
