Ingrand began to work in stained glass windows for private commissions.
His first church windows were for Sainte-Agnès, Maisons-Alfort and participating in the design for Notre-Dame de Paris in 1937.
In the aftermath of World War II, he was tasked with replacing 47 of the stained glass windows destroyed at Notre-Dame de Paris.
Ingrand also designed the Sanctification Dome in the Basilica of the National Shrine of the Immaculate Conception (1959).
This can be seen in the stained-glass windows behind the main altar at the Basilica of St Michel Church in Bordeaux (Ref: https://ourtapestry.blog/basilique-of-saint-michel-2/).