Sunday, was handled via an electric motor; and at least one of the four clock faces always remained visible during the restoration. Scaffolding was put up around the tower immediately after the bells were silenced. The original cost of the project to the taxpayers and creditors was estimated to be roughly £29 million, but this was then more than doubled, to £69 million. In February 2020, it was confirmed that the renovations had revealed that the Elizabeth Tower had sustained greater damage than originally thought in the May 1941 bombing raid that destroyed the adjacent House of Commons. Other costly discoveries included asbestos in the belfry, the "extensive" use of lead paint, broken glass on the clock dials, and serious deterioration to the tower's intricate stone carvings due to air pollution. The cost of addressing the new problems was estimated at £18.6 million, bringing the total budget for restoring the Elizabeth Tower to nearly £80 million. The 2,567 cast-iron roof tiles have been removed and refurbished, and a lift has been installed to make access easier, along with a basic toilet facility with running water, for the first time in the tower itself. The Ayrton Light at the top of the tower, which is lit when Parliament is sitting, has also been fully dismantled and restored along with the other lights in the Belfry, the lights being replaced with low-energy LEDs. One of the most visible changes to the tower has been the restoration of the clock-face framework to its original colour of Prussian blue, used when the tower was first built in 1859, with the black paint that was used to cover up the soot-stained dial frames now having been stripped away. The clock faces have been regilded, and the shields of St George have been repainted in their original red and white colours. The 1,296 pieces of glass that make up the clock faces have also been removed and replaced. In December 2021, after four years of renovations and restoration, the tower emerged from behind its scaffolding in time for the ringing in of the new year. In April 2022, the gantry supporting the scaffolding was removed, leaving the tower free of scaffolding. See also Big Ben Aden; a 22-metre replica built in 1890 Kolkata Time Zone Tower in Lake Town, Kolkata, India; a 30-metre replica built in 2015 Little Ben; a smaller 1892 clock tower near London