black grout has grey patches!

[bricktop]

had my floor tiled & grouted with black grout when its dried it has dried patchy with the grout drying grey in areas, randomly all over the floor. why has this happened? any ideas.

 

[White Room]

What grout did you use

 

[DHTiling]

Hi..

What make of grout and describe how the grouting and cleaning was done..?

 

[bricktop]

Tiler used maxi grout hygienic & washed it over twice with sponge & water afterwards.

 

[doug boardley]

how long ago bricktop?

 

[bricktop]

grouted on fri noticed on sat morning grey patches

 

[Time's Ran Out]

Who makes - maxi grout hygenic?
What colour adhesive did he use and was it all cleaned out of the joints before grouting?

 

[Abstract tiling]

sounds like hes washed over it too much and its changed colour,the pigmentation has washed out

 

[David - Tradetiler]

sealing the grout might bring the colour down - we have just started adding Aqua Mix on our website - Something like Enrich'N'seal will darken it

 

[Ajax123]

could just be a bit of light efflorescence