bathroom floor grout cracking - TilersForums.com

[bluevin123]

Hi,
I Tiled a bathroom floor last week and grouted it on the Friday, anyway about two hours later my plumber mate came to finish off the plumbing, connect toilet and basin up properly and put the shower screen up and bath pannel on.
Was called back today as the grout had cracked and some came out,which I half expected.

I plyed the floor as normal and screwed down ok,but there seems to be movement in a few tiles.
I regrouted the few grout lines that had cracked and added some Bal GT1 to the Bal flexi grout.
Hopefully this will do the job.
I said to the customer to not walk on it tonight but tomorrow should be ok and dont hesitate to call me back if it cracks once again.
I know you cant see the job, but do you think it could crack again?

If it does I might lift four or so tiles and screw down even more before placing the tiles back.
I put them about every 8-10 inches apart.
What dya reckon folks?
Cheers.
Vin.

 

[White Room]

What grout did you use initialy

 

[grumpygrouter]

Don't recon it is a good idea adding GT1 to already flexy grout.....

 

[trevortine]

The fact your plumber mate was walking on it after two hours wouldnt have helped. If youve done it with gt1 then i cant see it happening again unless there is some deflection in the floor.

 

[merlecollins]

Don't recon it is a good idea adding GT1 to already flexy grout.....

Dead right Grumpy - not a good idea at all - apart from anything else it will make no difference at all to the flexibility....

 

[DHTiling]

Yep..you shouldn't add additive to an already modified grout...and plumber walking on it will deffo not help..:ban:

 

[Time's Ran Out]

What adhesive did you use?
Why did you half expect it to crack/come out?

 

[bluevin123]

Hi
I used Topps own brand flexi adhesive. I expected it to crack/ come out as the plumber was treading on the floor to finish the job by our deadline. Not ideal I know!
Cheers
Vin

 

[bluevin123]

...... I also used Bal flexi wide joint grout.

 

[doug boardley]

why didn't you suspend the deadline?