bathroom floor grout cracking

[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.

[whitebeam]

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....

[Dave]

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

[timeless john]

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?

[bluevin123]

plumber was going on holiday and client wanted it finished by that day, did what we could in the situation we were in. Not ideal, but done now.

[pete f]

it will definately crack again because ther is movement in the floor the tiles will stick to the ply but the grout will fail

[Gazebo]

would re regrouting with epoxy help.?

[Sean fsy]

im sure your plumber mate is bothered about his actions while he is sunning it up on the beach. i think you were in the wrong allowing him to go in there to complete the work. at a guess i would say that the plumber had let you down and came at his convenience thus the job running late. lesson learnt i think that work, mates just dont work.

[whitebeam]

Sean have you introduced yourself in the new members section, do so you sound quite a personality

[Daz]

If some of the tiles had not bonded correctly, then they will continue to fail. You can re-grout with flexi grout, you can add more and more admix but they will still fail.

Lift and refix before re-grouting.

Good luck.

[Sean fsy]

Sean have you introduced yourself in the new members section, do so you sound quite a personality

Sorted

[bluevin123]

Thanks Captain, I know all about what the others said about plumber came to early,but I really wanted to know if it will crack again,which you have just answered.
Thanks.
Vinnie.