Giuliano Bugiardini moved to the studio of Fra Bartolomeo. He completed certain works left unfinished by Fra Bartolomeo when he died. Some years later in Rome, while at work on the ceiling of the Sistine Chapel, Michelangelo sought Giuliano Bugiardini's services but later rejected them. Vasari mentioned Bugiardini assisted Michelangelo very briefly in 1508 with the painting of the ceiling of the Sistine Chapel. He painted a "Martyrdom of St Catherine" for Santa Maria Novella in Florence, based on Michelangelo's sketches. He also painted in Bologna in 1526–1530. His earliest known works of between 1495 and 1500 show the influence of his
Restoration of the Sistine Chapel frescoes have been predicted by previous restorers. One of the major dangers to the frescoes is automotive exhaust, and they are also vulnerable to the effects of the crowds of tourists that pass through the chapel every day, bringing with them heat, humidity, dust and bacteria (the latter of which can biodegrade paints and pigments). The clean plaster surfaces are more in danger from these destructive elements than they were when they were covered with a layer of smoky wax. Previously, the Sistine Chapel's only ventilation was from its windows in the upper level of the walls. To prevent exhaust fumes