Calibrated tiles

[londonsurf]

Thank you for all the posts. Slightly confused now. The tiles have a riven finish. Should I be expecting my tiler to sort the tiles by thickness(167 in total) before laying? Isn't this asking too much? I thought the whole purpose of buying calibrated tiles was that they were easy to set out and lay!

I also googled calibrated tile and it seems to relate to tile thickness. The offending tiles are Indian Black Slate 30x60 - Slate - Natural Stone - Tiles

The tiler fitted about 4sqm of tile and then phoned me, said he couldnt work with them, took them up and went home. Tile Giant will give me a full refund on the tiles, but feel like the tiler should be compensated for working half a day with no end result??

 

[Perry]

calibrated' slate would mean calibrated to thickness riven would be split diamond sawn or chipped edge

 

[Spud]

are the backs ground flat or are they still riven, if they are unmanufactured they are not calibrated in my opinion just "sized" take them back and get your money back

 

[londonsurf]

Sorry further point - these tiles were £22sqm (reasonable for calibrated tiles). My view is these tiles are 'uncalibrated' as they vary in thickness and plan dimensions. I have been told that uncalibrated tiles are £12sqm. Have I therefore been ripped off?? Wouldn't trading standards have something to say about a uncalibrated tile being sold as a calibrated tile when it is clearly not??! grrrrrrrr

 

[londonsurf]

the backs of the tiles have a machined ribbed effect running along the length (600mm) of the tile........

 

[londonsurf]

I note Tile Giant are forum sponsors...may be they can answer the case of their so called calibrated tiles...

 

[Gazzer]

You may have to wait for office hours for that to happen.

 

[Saltire69]

If it's the sherra slate they can be a bit sizey(is that a word lol). They can be fitted ok though. The calibration on them has change to +-4mm,but of course it can differ quite a bit with it being slate.

 

[Time's Ran Out]

In over 30 years of fixing this natural material I've only ever sent back slate once and that was due to the poor quality and uneven layers in the riven surface.
It's a fantastic product with a unique rustic appearance so if you want perfection rather than aesthetics perhaps go for an alternative lookalike.
In my humble opinion the calibration of the tile is the surface area measurements and due to the nature of the riven surface some variation in the thickness is to be expected.

 

[londonsurf]

some variation in thickness is to be expected....but from 5mm to 15mm?? How can these possibly be calibrated?