J
Jelthetiler
I specialise in stone and in all the years I've been doing it, have never sealed the back. Just seal once or twice a year for the paranoid!
The only thing I will say is that repeated sealing will more often than not make the tile shade slightly darker, especially if like me you are generous in the application.
The only thing I will say is that repeated sealing will more often than not make the tile shade slightly darker, especially if like me you are generous in the application.
