Is it possible to waterproof cracked bathroom tiles?

mark_cycling00

Good afternoon.
I have tiled shower wall and over time, some tiny cracks have developed between the tiles and the mortar. Just some sections at the base where tiles meet bath.
You have to look carefully to see them. But the wall on the other side is a little damp so it needs addressing.

 Anyway a plumber was here and said it was possible to "seal them up" and replace the silicone at the edge of the bath 

He seems to have gone AWOL. 

Is there a product that can "seal" them up? Or is it a case of regrouting them 


Many thanks 

MikeJXE

He's correct 

Use a good silicone sealant 

mark_cycling00

MikeJXE said:

He's correct 

Use a good silicone sealant 

Thanks, do you think I could use BAL grout effect silicone so it looks more like the rest of the tiles? 

MikeJXE

I wouldn't it doesn't flex if the bath moves 

Silicone is flexible and can stretch when the bath is filled/emptied

mark_cycling00

MikeJXE said:

I wouldn't it doesn't flex if the bath moves 

Silicone is flexible and can stretch when the bath is filled/emptied

Thanks for your advice