UFH Heating, Wood Effect Tiles, Grout Sizing?

[clipboard2008]

Hi All

I have a client that has 100m2 of 600x150 wood effect porcelain to be laid on wet UFH.

The customer would like 1mm grout joints which I've said wouldn't be possible, I normally do not use anything apart from 3mm but could I get away with a 2mm grout joint for her?

I'll be quoting to lay Ditra but she was quite willing to risk laying directly to the screed?

Many thanks in advance

 

[Diggy]

3mm min for me or I wouldn't do it personally.

Diggy

 

[One Day]

2mm will be fine in my opinion although I'd prefer the Ditra in that size area.

 

[foggy34]

used some of these wood effect type tiles and they were bowed like a good un,if there like the ones I used they have size recommendation for grout joints on box,3 min tho

 

[SJPurdy]

British Standard recommendation 3mm minimum for ceramic floor tiles. Question should be do you need to make joints wider for tiles of this size and heated floor? I would answer no, I don't think so but you must put in movement joints to de-stress the tiling.

 

[Sean SML Tiling]

Bs recommends 3mm on ufh any less its your expense if they start coming loose

 

[One Day]

Bs recommends 3mm on ufh any less its your expense if they start coming loose

It's our expense even at 3mm!

 

[Sean SML Tiling]

Very true but I wouldn't go any less than 3.