The groin vault is a ceiling of many names. Â It is often called a groined vault and sometimes even known as a cross vault because it is made by intersecting two barrel vaults. Â It is the edge between these intersecting barrel vaults that creates the unique look that only groin vaults can offer. Â And in fact, this edge is where the ceiling gets its name (this is the groin of the vault). Â Just browse our photo gallery below for inspiration. Â Have you already installed one of our groin vaults? Â Shoot us a pic or share it on Instagram with the hashtag #archkit.