Efflorescence - Tile Advice

[chelsway]

Hi to all, i recently tiled a bathroom, and 3 weeks later all the grout is a lemon yellow colour,been told i could have used too much water in washing,fair enough.does anyone have any experience with the unibond grout reviver and would the yellow bleed through eventually?please give me any advise.thanks

 

[DHTiling]

That isn't Efflorescence as the title you used suggests..

Which grout was it...and has the customer done any cleaning duties and if so what did they use..?

 

[Gazzer]

Is it "all" the grout ? Was adhesive dry before grouting, what adhesive did you use?, were walls painted? as much info as possible please

 

[chelsway]

It was a weber maxi grout(suitable for exterior/interior) as far as i know they have left it alone but who knows,i just find it strange that its the same colour all over?

 

[DHTiling]

Ok.. What adhesive did you use..?

 

[chelsway]

I primed the walls with a bal sbr ,used supergrip to stick and weber grout.left the tiles overnight before grouting

 

[chelsway]

Supergrip

 

[chelsway]

Yeah and its all the same colour...top to bottom

 

[DHTiling]

Right... What size tiles... and how thick was the adhesive used..?

Soz for the questions ..just trying to eliminate things.

 

[chelsway]

The tiles were ceramic 20 x 25 or 30 b&q tiles and i used my normal 6mm notched trowel

 

[Gazzer]

Still havent answered if walls were painted ?
Did you use a new sponge ? see a few times when colour came out of spponge but then you should have noticed that when washing off.

 

[DHTiling]

So it shouldn't be a moisture problem..

You need to call weber and get a Rep out....before you do anything else..

 

[chelsway]

As i remember i think the walls were painted but around the shower area it was old unpainted plaster,one wall had been wall papered and paper removed.

 

[chelsway]

SO IT DOESNT SOUND LIKE A Efflorescence to you?

 

[DHTiling]

Efflorescence is salts and not yellowing.