Notre Dame fire: Charred beams, rescued relics and a vow to rebuild the cathedral

Heard on the news last night that they are saying that France does not have enough big trees to reconstruct the roof of Notre Dame. Looking at the picture with this article I see lots of charred remains of the roof. That got me thinking, we have the technology to make recycled lumber, could this process be used to make replacement beams for the roof? Kind of an ashes to ashes thing.