H+R were instructed to undertake an investigation to determine the extent and cause of dry rot (Serpula lacrymans) infection and decay which had been recently discovered aecting the structures at the south-west corner of the central courtyard; so that advice could be given on cost eective remedial measures, to allow the conservation of historically important fabric, and to refurbish with the minimum risk of further dry rot, or other damp or decay related problems on future occupancy as oce and library accommodation. Dry rot (Serpula lacrymans) is a ‘geophilic fungus’ that lives in damp masonry and consumes softwood timber built in contact with masonry. The fungus will persist for many years, decades or even centuries under these conditions, and will recur when further water penetration

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