Grout cracking - TilersForums.com

[felix]

I tiled a kitchen floor a couple of months. The floor was concrete and was level. I did the job and the customer was delighted. Now two months on he says some of the grout has cracked. I don't understand how it could have cracked because there is no movement in the floor.

Can anyone help please?

 

[enduro]

Did you mix the grout up to wet, also if you laid porcelain tiles you must use a flexible grout even if it is on a concrete floor, as normal floor grout wont stick to the edges of the tiles.

 

[GazTech]

nicely endo...this may be your problem Felix....Gaz

 

[Perry]

are the tiles loose or hollow ?

 

[DHTiling]

Is the floor a "warmafloor".. This is a concrete floor that is laid onto a king-span polystyrene base .. thus creating a floating floor effect and needs flexi adhesives and grouts.......worth a thought....

 

[felix]

I used the same grout and adhesive I use for any floor. The only difference is I didn't ply it first. I've spoke to the customer again and its only one grout line. The tiles were 300 x 600 porcelain. Because its only the one grout line I'm wondering if maybe its something the customer has done

 

[Perry]

its got to be movement of some kind is it in a doorway

 

[felix]

I've not seen it yet. He didn't say where it was. I'm going to look at it tonight. I'm quite gutted because I've never been called back to a job before. My pride is a bit dented

 

[GazTech]

I tiled a kitchen floor a couple of months. The floor was concrete and was level. I did the job and the customer was delighted. Now two months on he says some of the grout has cracked. I don't understand how it could have cracked because there is no movement in the floor.

Can anyone help please?

You say it is concrete.....
----

I used the same grout and adhesive I use for any floor. The only difference is I didn't ply it first. I've spoke to the customer again and its only one grout line. The tiles were 300 x 600 porcelain. Because its only the one grout line I'm wondering if maybe its something the customer has done

Bit confused Felix over your posts....can you clear it up ? ...Gaz

 

[felix]

Normally when I tile onto floorboards, chipboard etc then I ply the floor. Because this floor was concete and level I didn't ply it because I knew there would be no movement in it.

I used the same addy and grout as I would use for any floor whether it needs ply or not. Hopefully that is a bit clearer than what i wrote before.

As far as I'm aware there is nothing that should have made that grout crack.