Grout cracking upstairs bathroom

[Cmac88]

Hi all just got my upstairs bathroom all tiled couple of months back. Where the floor tile meets the wall tile all the grout has started to crack all around the bathroom. What's causing this to happen and how do I fix it

 

[Flintstone]

That should have been siliconed, instead of grout as it's a movement joint, try removing the grout and siliconing it, should solve it.

 

[Old Mod]

As above

 

[Cmac88]

Can you guys recommend a good silicone to use thanks

 

[Ttt1601]

Depends on what grout was used, most do a colour match if it's white, I like Dow corning if coloured Mapei or Ultra I usually use but that's because i use their grout

 

[Cmac88]

Not sure what grout was used but it is a grey colour

 

[Ttt1601]

Mapei do a range of greys have a look at their colour chart and pick the closest you can then mate