10 Adam Street, London WC2
One of the few remaining buildings of the original Adelphi development, this Grade II* listed Robert Adam house, dated 1768 - 1772, was found to be in an extremely poor condition with settlement and advanced dry rot.
Once the thick layers of dirt and paint had been removed from the brickwork and stone dressings, a fully costed schedule of repair was presented to the client.
Remedial works included the partial rebuilding of the facade, renewal of curved and flat gauged brick arches and the replacement of the original Portland stone cills. The stone cornices proved not to be of Portland stone as expected, but a wild coloured sandstone, traced to Edinburgh. The stone was evidently unsuited to its use, being friable and fractured, with a long history of repair. In keeping with the previous, but not recommended practice, the cornice was reinstated in-situ with reproduction toolmarks in fine finishing mortar.
In conjunction with English Heritage, combinations of naturally coloured limes, aggregates and pigments were provided to test for both maximum durability and uniformity of the base mortar and colourwash. Once approved this was then applied in small areas before a final application of white tuck pointing. Conservation grade lime mortars were used in all the works.
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