The metal beams in the roof of Chartres cathedral represents one of the first such architectural works in France.
On the 4th of June 1836, the oak roof-beams of what was called "the forest" were destroyed in a huge fire, unintentionally started during repair work.
The new roof was begun in the same year under the direction of the architect Accary-Baron. He chose to use a combination of wrought iron and cast iron. The principal parties involved in the project were Mignon, who contructed the beams, Emile Martin, the smelter, Quénéhen, who roofed the beams with copper plate, and Piebourg, the mason. The work was completed in 1841.
This impressive lace-work of metal is far lighter than the original wooden construction.
The green hue of the roof is due to the natural oxidization of the copper.




Special permission from the Diocese Rectorate and from the Centre for National Monuments is required to visit the roof.
To see and learn more about the Cathedral Roof Structure, click on "Video".

Chartres Cathedral is one of the buildings affiliated to the Centre for National Monuments.