Collyweston Re-Slate of Grade II Listed Home

Collyweston Re-Slate of Grade II Listed Home; Circa 1800’s Squared coursed limestone rubble with ashlar quoins and dressings, Collyweston slate roof, raised stone coped gables, two red brick gable chimney stacks.

This beautiful Grade II listed home in Langtoft was last re-slated in the 1980s.
Unfortunately, the previous roofing company stretched the Collyweston Slate, which means they did not use enough Collyweston slate for the roof size.
As a result, the overlap of each of the Collyweston slates is reduced. Furthermore, the Collyweston slates were not all individually drilled and nailed to the batten. Some were ‘nitched’, meaning once the mortar fails, the slate falls sideways as there is nothing to keep in place.
There were further issues with the black bitumen felt used, which had caused the roof to sweat and make internal timberwork damp.

The entire Collyweston roof was removed and re-felted with a breathable felt membrane before the tanalised batten was secured.

Redressing Existing Collyweston Slate

Our team redressed the existing Collyweston slate by hand and additional reclaimed slate dressed. The Collyweston roof has been reinstated by our craftsmen, using traditional methods and lime mortar with more band/overhead lap. The additional Collyweston Slate making a complete roof covering.
New Code 4 lead soakers (under the slate and up the wall) and abutments have been installed; with traditional lime mortar securing it: to prevent water ingress. Additional Collyweston Hog Back Ridge have been added to complete the ridgeline; on a lime mortar base with traditional creasing/packing between each ridge tile.