The apse and aisle ends were square, and the nave was vaulted with a wagon vault.
In front of the apses is a solea with a wagon vault, except in front of the small aisle apse, where it is quadripartite.
They return across the ends of the aisles, in each of which is an altar beneath a wagon vault, though there is no apse.
The central compartment has a wagon vault, the other two quadripartite vaults.
The building has a wagon vault of three courses, carved with cofferings and rosettes above a magnificent cornice.