André Finot, the spokesperson of Notre-Dame de Paris, announced soon after the fire was known that the roof's wood frame was doomed. This frame was in two parts

André Finot, the spokesperson of Notre-Dame de Paris, announced soon after the fire was known that the roof's wood frame was doomed. This frame was in two parts: one side from oak beams of the 13th century, the other half from the 19th. Of course, the spire was in later part, since it was built by Viollet-Le-Duc. To prevent fire, there was no electricity wires in attic, because the oak beams were extremely dry.