The existing gable end of this historic Farmhouse near Clitheroe exhibited signs of long-term water ingress, with visible staining on the internal walls and accelerated weathering to the masonry fabric.
Upon inspection, the copings appeared to be concrete which had been cast ontop of slates and had become displaced with one falling away prior to commencing works. Being exposed, the gable suffered from high wind exposure and the measure of coping addition was to limit slate damage.
Our proposal was to initially resolve the high-level issue by installing the lead secret gutter between the new coping stones and slate abutment. This presented a further challenge as Quion Stones – to hold new stone copings – were not in place.
The reason for our approach is to introduce a discreet, durable rainwater management system to prevent future water penetration. The Lime mortar between the coping stones – as any mortar – exists as a weathering course, and therefore covering the wallhead in lead prevents any water penetrating.
Along with all Lead bossing and welding onsite, we created an adequate overhang and drip details in order to shed water efficiently. Only lime mortar was used and the lead coated for bedding.
This project demonstrates the effective blending of traditional materials with modern knowledge detailing to solve long-standing water ingress issues in a heritage context. Through careful planning, quality craftsmanship, and respect for the building’s character, the result is both technically robust and visually sympathetic.
