This blog is from Graeme McArthur, Conservator at UCL Culture.
UCL’s Whistler Room, located next to the Octagon Gallery, is so named because it contains murals painted by the artist Rex Whistler, who studied at the Slade School of Fine Art and whose career was sadly cut short by the Second World War. These were originally completed in 1935 for a private residence on Gower Street; however by 1959 the house was due to be demolished. The murals were saved by literally cutting them out of the wall and removing them to their current location. They are part of the UCL Art Museum collections and therefore come under the care of UCL Culture.
The murals are painted in oil on top of house paint, supported by around 2cm of the original wall plaster with an auxiliary support of wood battens and plaster of Paris. Unfortunately the change in environment and support has caused severe stability issues. Ongoing conservation has been required since 1960 as the house paint layer keeps cracking and flaking away from the plaster beneath. Glazing was added in 1963 to try and alleviate these issues, but although it protects the surface from physical damage it has not improved the environment.