They've recently rebuilt the roof of the "collège des Bernardins", also in Paris and as old as Notre Dame, using steel beams and titanium tiles... Doing the sa

They've recently rebuilt the roof of the "collège des Bernardins", also in Paris and as old as Notre Dame, using steel beams and titanium tiles... Doing the same for Notre Dame would be sensible. They will do as they see fit, and rightly so.