Varying dimensions on boxes - Tile Advice

[johnboy]

Hi guys and girls. Had tiles delivered today with what seems to be varying dimensions on the box. Can anyone enlighten me as to how these are interpreted.

 

[johnboy]

I believe I might have sussed it and perhaps someone can confirm. The numbers relate to the calibre, in this case the box is calibre 7 so the tiles are 447x447

 

[Porcelainwood]

They are the different calibers of the tiles when they come out of the kiln
"Caliber" refers to the specific size of the tile. As the tile passes through the kiln during the manufacturing process, it will have all the moisture burned off in the intense heat. When this happens, the tile will shrink between 5% and 10%! The amount of shrinkage during manufacturing depends on the specific tile composition and temperature in the kiln. The factory then separates the tiles into different "Calibers" to ensure the installer has similar sizes provide the best-finished product. It’s important to note that when beginning your project to ensure your tile has the same caliber to avoid potential issues.

You need to make sure that all the boxes you have ordered are the same caliber this should be on the box some where.
The problem arises when buying the tiles from Wickes B&Q etc and they restock and place the new stock onto the old stock with boxes of different calibers
Hope this helps

 

[johnboy]

All the boxes are caliber 7

 

[Porcelainwood]

All the boxes are caliber 7

Not from the picture you have posted it must be on another part of the box but good job in finding it as it would cause problems from boxes from top of the caliber to the bottom caliber (3mm difference all round )

 

[johnboy]

Yeah there is a second sticker right beside with caliber and Tone/Shade marked on it. All boxes have the same value for both of these.