Built in 1894, the magnificent Grade II Listed “Old College Building” in Central London houses the City University’s School of Arts. The £9m project included the refurbishment and development of a suite of music rehearsal rooms and the conversion of the garden and paved patio area into a state-of-the-art concert hall. An essential part of the first stage was to ensure maximum noise insulation from both inside and outside the music rehearsal rooms. An acoustic lining was fitted between the original primary windows and the secondary glazed units and, when tested, this combination exceeded the required noise insulation levels.