Good point , but as you as not supposed to fill your vertical movement joints with grout, it would make the joints look dark. If i had filled the vertical joints with a small amount of mapei 132 beige then yes a clear Silicon might work.
But as everyone on here recommends that grout should be kept clear from the Silicon joints what am I to do, in the real world i think most guys would grout and cover with clear Silicon, but i am trying to practice what I am being told on this site by experienced tradesmen.
thanks for the idea though. enjoy your weekend.
p.s. are you really busy.?
I am turning work away and could prob pass some your way.
rob p.m to discuss