Hello community, I noticed that this stair step in my european 60ies house was a bit cracked so I broke it off completely. How would you fix this? Some mortar or tile glue? Does it need some kind of rebar?
Unfortunately those bullnose tiles are always going to be prone to breaking off because they're jutting out from the stair and are built from materials that are strong in compression, not tension.
Clean the edges and glue them on. Expect them to fail again.