The first work of safeguarding the elements of Notre-Dame Cathedral begins on Tuesday. Nets were installed under the windows of the two roses flanking the building to prevent any stone joints from falling.

A week after the fire that partially ravaged Notre-Dame de Paris, twenty craftsmen, workers and architects work tirelessly to consolidate the building and carry out the first emergency work. They still can not enter the nave, choir, transepts and aisles because of the risk of falling rocks and rubble. But from Tuesday, stained glass will be removed and a first tarp will be installed above the vault. Protective nets were also placed on the two rosettes on each side of the cathedral to avoid any stone fall.

Nets to avoid falls of stone joints

If the large rose window, between the two towers, is intact, those on the flanks of the building - which are called roses - have been weakened. "The three beautiful roses that date back to the 12th and 13th centuries were still there," Cathedral spokesman André Finot told BFMTV. "They are stained glass windows of the 19th century, much less important that could be touched, but not the jewels of the 13th century, it is a bit of a miracle". The stained glass windows have nevertheless been blackened by smoke but the urgency lies mainly in the stone that frames the glass panels and that threatens to fall. Both roses were covered with a net.

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"The whole cathedral has taken a lot of water and we are not immune to the fall of a piece of seal from the rose," says Charlotte Hubert, chief architect of historical monuments, at the microphone from Europe 1. "It can happen and it does not matter, unless someone takes it on the head, they are epiphenomena but for safety, we put a net."

Stained glass windows that will be restored

The stained glass of the roses will go in restoration in the months to come. But those who overhang the choir and the nave on the sides of the cathedral, also blackened by soot, will be removed from Tuesday. This will allow huge beams to pass through the windows to create a temporary floor. The workers will be able to work under the vault within three weeks.

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