Are tiles made to a category?

Ceramic tiles are classified by their production method, which can either be dust pressed or extruded, and the level of water absorption measured as a percentage. The table below shows the classifications take from current British, European and International Standards for ceramic tiles.

Water Absorption	A Extrusion	B Dust Pressed
0 to 0.5%		BIa
0.5% to 3%	AI	BIIb
3% to 6%	AIIa	BIIa
6% to 10%	AIIb	BIIb
Greater than 10%	AIII	BIII

Ceramic tiles in the classifications can be glazed or unglazed and conform to the physical, dimensional and chemical resistance properties detailed in British Standard BS EN 14411.

Ask your TTA specialist tile outlet to help you chose the right tile for your tiling project.