BEST FLEXIBLE FLOOR GROUT (2mm joints) Floating Floor!

[Unregistered]

Hello,

Was wondering what is the best flexible grout for a polished porcelain floor with 2mm joints. (Tiled on a floating floor)
Was advised by tile shop to use Mapei Ultra colour plus, adding flexible primer?? But grout has cracked, well more sort of come away from the edges.
Tiler happy to come back and put right but talking of using epoxy grout? Wondred if that sounded correct or not?

As an absolute no nothing about tiling lady, I have spent ages trawling through the internet and it would appear that a flexible adhesive with no additive would be better? Read Bal superflex (not wide joint) sounded good? I am of course ready to be corrected🙂

 

[Deleted member 9966]

personally I think you're going to struggle with the floating floor and the grout. it's the floating floor that is causing the grout to crack more than likely. so no matter how flexible the grout is, it will still eventually fail as the grout is not rubberised to take the floor deviating in different directions. unless of course your floating floor is more rigid than it seems, you will struggle to keep the grout intact. many professional tilers do not like floating floors because essentially you are not tiling on to anything rigid. As soon as you walk over the floor, you're adding movement to it, and if it's not rigid to start with, the tiles will go with the movement and become detached in the worst cases.

do you know how your floating floor was constructed?

 

[Stewart]

To be honest, your tiler should have warned you about the dangers of tiling on a floating floor. Most tilers on the forum would recommend not to tile, as a floating floor isn't suitable to be tiled on, and more than likely, all types of grout are going come loose from the joints due to too much movement in the floor.

 

[kilty55]

as above. however try bal non flexible grout mixed with gt admix this might solve your problem

 

[Unregistered]

Hi All again,

Didn't know how to answer back - Sorry first time post!

Tiler did actually warn us beforehand, but spent a long time making floor as rigid as poss (unsure exactly what he did - sorry)

Am aware that this may be an ongoing problem with the grout if there is movement but think its woth one more go to see - Any suggestions as to which grout would be best.

Grout appears to be coming away from the edges, tiler mentioned as they were sealed porcelain, grout may not have bonded to edges of tile? therefore he suggests Epoxy - Sounds very messy from what I've read.

I assume no one thinks its the additive that was mixed with the Mapei Ultracolour that was the problem?

Your advice is invaluable, what a great forum - Thanks for your time

 

[Unregistered]

Hi All,
I'm assuming no one thinks the epoxy grout the tiler advised is going to be any good?
Thanks Again

 

[Gazzer]

I really dont think Epoxy grout is the way to go.
I would be thinking that if the Mapei grout has failed then there was either and error in the application or there is too much movement in the floor.
The most flexible grout I have ever used was Bal Wide Joint with GT1 admix.

 

[Gazzer]

Your posts are not appearing until approved. You will get better response if you take the time to register on the forum . Thank you.

 

[doug boardley]

I really can't see anything working tbh, tiling a floating floor is like tiling a trampoline in most cases.

 

[Dan]

Floors should always be 3mm minimum. Just for future reference. 🙂