<P> The fire broke out as students were preparing for their Degree Show . Eyewitnesses said that the fire appeared to have started when a projector exploded in the basement of the Charles Rennie Mackintosh building just before 12: 30 pm . Investigators later determined that the cause was not a faulty projector, but "a canister of expanding foam" used in close proximity to a hot projector, causing flammable gases to ignite . According to The Scotsman newspaper, the use of aerosol cans is against school policy . The report from the Scottish Fire and Rescue Service found that the design of the building contributed greatly to the spread of the fire: "the number of timber lined walls and voids, and original ventilation ducts running both vertically and horizontally throughout the building" as well as "a vertical service void", which "ran the entire height of the building...(and) allowed flames, hot gases, and smoke to travel". Fire and smoke dampers, which are intended to prevent the spread of fire and smoke through ducts, had not been retrofitted . In addition, an intended "fire suppression system" for the building had not been completed . A school staff member was on hand when the blaze first ignited, but was unable to contain the fast - spreading flames . </P> <P> A careful restoration process began soon after the fire; work on restoring and recreating the Mackintosh design, including the famous library interior, started in 2016 . The restoration was performed with historical accuracy, including the use of original wood species such as longleaf pine and tulipwood . </P> <P> A large fire broke out in the Mackintosh Building on 15 June 2018, causing extensive damage . Emergency services received the first call at 11: 19 pm BST, and 120 firefighters and 20 fire engines were dispatched to the fire . No casualties were reported . The cause of the fire is not yet known . Alan Dunlop, visiting professor of architecture at Robert Gordon University who studied at the Mackintosh School of Architecture, was contacted by the press immediately after the fire and stated: "I can't see any restoration possible for the building itself . It looks totally destroyed ." This point of view was not supported by the early external building surveys, which appeared to indicate that much of the exterior had survived, though extensively damaged . Drone footage enabled a clearer assessment of the extent of the interior damage, and a programme of partial dismantling was established to stabilise the portions of the facade at risk of collapse, notably the south elevation . A Glasgow City Council spokesperson said: "There is a consensus emerging that the intention of the building control people, HES (Historic Environment Scotland) people and the art school is to save the building...Right now, people are operating on the understanding it will be saveable ." It was also noted by Roger Billcliffe that "It has been voted Britain's most important building several times over, and we have all of the information needed to recreate every detail, following extensive laser surveys after the first fire ." </P> <P> The first opportunity for the school administration to visit the site happened on 19 June 2018 . Muriel Gray, Chair of the Board of Governors, stated: "This was the first opportunity for the expert team to see the building and begin what will be a long and complex process of determining the future of the Mack, but we remain optimistic . There is a huge desire to see Mackintosh's masterpiece rise again, one which we all share . We have incredibly detailed information on the building collated over the last 4 years, and have worked with teams of talented craftspeople who were doing a tremendous job on the restoration ." In a subsequent statement to the BBC, Professor Tom Inns, director of the school, affirmed that "This building is not beyond saving . It will be saved in some form ." He continued to support his firm belief that the building should continue in its function as a working art school, rather than a museum . </P>

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