Dark patches in limestone grout

[SOTON STEVE]

Hi Guys

I've just completed a job (grouted last wednesday, finished Thursday) where I used BAL Superflex Wide Joint Limestone. I have just been back to the house as the client has complained about random dark patches on the grout. It looks like damp spots, but I know its definitly not that. Please have a look at the pics provided. I know I havent done anything wrong with the mix. Please help me identify this problem.

Many thanks

Steve

 

[DHTiling]

Hi steve...

You need to call the rep out...don't let them say it's efflorescence...

 

[doug boardley]

hard to tell for sure what it could be steve, I'm assumig you used a white adhesive and it's not discolouration bleeding through

 

[SOTON STEVE]

The adhesive used was Bal Grip which turns pretty much white when dry. If it was a bleeding problem surley it would show up everywhere?

Steve

 

[Time's Ran Out]

:welcome:Steve - its the 2nd thread this week on Bal limestone grout and discolouration. That must tell you something!

Timeless John.

 

[Diamond Pool Finishers]

what was the substraight

 

[White Room]

Aqua mix grout colourant may be an idea if it's not sorted

 

[SOTON STEVE]

I've just read the other thread about this problem. Whats the best way to tackle BAL?

 

[DHTiling]

Before you do steve...

How long was the adhesive left to set and how deep did you go with it...?

 

[SOTON STEVE]

It was left to set for about a week before I got round to grouting.