hairline crack, slight flex in 2 tiles - to foam or not to foam?

[Jon_Hall]

I've just thought of another option that may work, but I cant guarantee it and it will probably be messy. We sell a 3 part epoxy grout, you could mix up the base liquid and the accelerator, add a little of the sand to bulk it out a bit, then work it well into the joints so that it gets behind the tile. This may work if the tiles cant be removed. I have done this on partially blown floor tiles, and it worked well, but never tried it on a wall.

 

[digga_23]

I've just thought of another option that may work, but I cant guarantee it and it will probably be messy. We sell a 3 part epoxy grout, you could mix up the base liquid and the accelerator, add a little of the sand to bulk it out a bit, then work it well into the joints so that it gets behind the tile. This may work if the tiles cant be removed. I have done this on partially blown floor tiles, and it worked well, but never tried it on a wall.

What is it called?


I was looking at something with a gun to get in between the holes like:
1.) Gorilla glue (then spray a mist of water in after), but think will be messy
2.) Water proof gorilla expanding foam (as that will definitely penetrate the full area and get behind the tiles and won't need much. but does have risk that it may push tiles out (although likely difficult as shower is holding it in place)
3.) A strong grab adhesive that can stick to tiles like "gorilla glue grab adhesive", but i think i'll need to pump several guns worth in to the tiles.

Just wondered if any one had personally done something similar.

 

[Jon_Hall]

Sorry I have only used epoxy, I cant recommend an expanding foam or anything like that.

 

[digga_23]

Just to help close this out for any others that may have a similar issue. and don't want to dismantle there whole shower quadrant! - 2 tiles that hada small amount of flex and are being banged by a shower door, resulting in a hair line crack to form in the grout on 2 of the tiles after 5-6 months at a time. Believed not sufficient adhesive was originally applied and small section may have de-bonded

I went with gorilla grab adhesive, i grounded out the existing grout, squeezed the end of the nozzle to fit through the gaps and injected grab adhesive all round the 2 tiles that were giving some bounce (believed part of the tile had de-bonded and there wasn't adhesive going all the way to the edge that may have caused this).
This stuck it very well to the wall and there is no longer any flex as the gap is also filled. S

I've now ordered some white "bal - microflex" grout as this offers a bit more flexibility for any small movements ( in case the shower quadrant door smashing shut on the tile may still cause a hairline crack again).
Probably didn't need to do both, but may as well go with belt and braces to save doing anything again.

 

[Dean Clt Alt Del]

Hello,

Wondering if 4 years on if you had any updates on how this gorilla grab adhesive and regrout work out in the long run?

 

[Dan]

Hello,

Wondering if 4 years on if you had any updates on how this gorilla grab adhesive and regrout work out in the long run?

Good shout mate but how will you get updates if you don't sign up?