Advice needed grout cracked

[John Benton]

Soŕry WalLuigi, no.

Any of you guys used the Mapei colour match sealant in the corners and can you get a good finish/match with grout?

Yep pretty good colour match

 

[Waluigi]

Colour match round a tile as an access panel .

 

[GoneGuy]

The Mapei could match Silicon is spot on😉

 

[Ian Barrow]

An update - builder been back today but just put Silicon over cracked grout, what are the problems, if any, of this?

 

[acaciaguy]

It’s wrong. Silicon in corner joints not grout. He’s just covered over the issue. A full Silicon joint is better for flex and water sound

 

[Time's Ran Out]

Now here’s an question!
What did you all do before the colour matched Silicon was available?
You see in my opinion the builder did what we used to do - grout the corner and go over the dry grout with a clear or white Silicon.
The bigger issue here is why is it cracking so much that it’s become a major concern?
As a tiler, I Silicon the corner, fix the tiles, grout, then Silicon the tile face again. Always have always will!

 

[acaciaguy]

Wally asks why didn’t you use fully Silicon in joint? If the colour is white or clear. Why grout?

 

[jasper]

Don't be so quick to judge the builder. Silicon is great unless you happen to have RIW tilesafe membrane behind. I would normally leave the internal corner joint free of grout then Silicon knowing the Silicon would bite nicely into the gap however CCL Wetrooms advise if you use Silicon then warranty will be void. Builder may have been following instructions. RIW also advise the same. And that's why I won't use the bitumen style membrane