The Thomas Fisher Rare Book Library is part of the Robarts Library, which was constructed in 1973 of reinforced cast-in-place concrete.
The library is considered one of the most significant examples of brutalist architecture in North America and a listed heritage building by the City of Toronto.
Winter time condensation is occurring at the interior surfaces of the exterior walls, resulting in a potential hazard for the moisture sensitive rare books that are stored along the exterior walls.