New grout different colours

Joined
4 Sep 2013
Messages
246
Reaction score
1
Location
Hertfordshire
Country
United Kingdom
I have recently had my bathroom re tiled but the Ardex fkexible grout used has dried different colours. In some places it's dark grey and in other a lighter grey (almost white). What caused this and can I do anything about it?

 
Sponsored Links
Joined
29 Aug 2015
Messages
8
Reaction score
0
Country
United Kingdom
Hi,

Did you get a his solved?

I have the same problem and finish of grout looks exactly same as your picture.
 
Joined
24 Sep 2016
Messages
1,043
Reaction score
165
Country
United Kingdom
Not a tiler but the assumption is it was not mixed correctly before applying?
 
Joined
1 Oct 2015
Messages
131
Reaction score
18
Country
United Kingdom
It looks like effloresence (salt residue). Normally happens if there is too much water in the mix or excess grout wiped off too soon or the sponge was too wet.

Should clean up easy enough using a mild acidic grout residue remover, like the HG Extra or LTP grout stain remover.
 

L95

Joined
6 May 2016
Messages
183
Reaction score
14
Country
United Kingdom
Too much water in the mix or washed out the grout joint when cleaning.
 
Sponsored Links
Top