I live in Greece and have a very traditional house.I can't yet find a replacement porcelain shower tray the same dimensions. The original is cracked in several places but not leaking. I was thinking of covering it with a glue, a foundation and tiles or painting it with something that might stick??? Any ideas until I find a new one? Porcelain on concrete maybe Anyhow, very thick and heavy dimensions: 70cm wide x 65 deep x inside height 12 and outside 18.