This is the 11567th most frequent French word.
réfection
Restoration or repair.
In this sentence, 'réfection' refers to the act of repairing or renovating, specifically the bridge.
La réfection du pont a duré plusieurs mois.
The refurbishment of the bridge lasted several months.
'Réfection' here indicates the process of fixing or renewing a part of the house, namely the roof.
Nous avons commencé la réfection de notre toiture la semaine dernière.
We started the restoration of our roof last week.
In this context, 'réfection' implies the ongoing activity of repairing or updating a classroom.