grout line width question - Tile Advice

[what]

What is the thinnest grout line on a large porcelain floor tile you can get away with without running into problems?

 

[Dumbo]

British standard recommend 3mm on a floor

 

[what]

Best not to try and go thinner then

 

[peteablard]

I've done 2mm on floors before but as mention above BS minimum is 3mm. It depends on the quality of the tile, some can be 2-3mm different from others in the same batch!

 

[One Day]

2mm on a high quality rectified tile, but in my opinion anything 750x750 and above looks better with 3mm.

 

[Kyle Knowles]

2mm on a high quality rectified tile, but in my opinion anything 750x750 and above looks better with 3mm.

I do 2mm regularly on floors with rectified porcelain and never had a problem but I'm just a sprout compared to some of these oldies

 

[GAZ5518]

3mm ...allows for variation... Which is inevitable !!