Tile quality and quality classes

Tile is not the same tile. Different qualities lead with tiles also to different price classes, which are partly far apart. We have summarized the quality features of tiles, how to judge them and how they are given.

Processing differences and installation

Manufacturing differences

Tiles can be made in different ways. The type of production then decides on the properties of the tiles.

For example, you can distinguish three basic tile categories:

  • stoneware
  • stoneware
  • Stoneware

Stoneware and porcelain stoneware are fired under higher pressure and higher temperature and are therefore completely sintered through. This leads to a much higher surface hardness, which can partially match that of diamond.

Basically, you can hardly compare the individual tile types because of their very different quality. Porcelain stoneware tiles sometimes have completely different properties than ordinary stoneware in some areas.

The different properties do not only justify quality features, but also the suitability for certain areas of application.


The proper laying of tiles also plays a role in the later quality of a tile floor. For each tile, there are also certain installation instructions that must be followed. This is the only way to ensure the overall quality of the soil at the end.

property Categories

Water absorption capacity

One can distinguish tile qualities already fundamentally due to the water absorption capacity. The current norms form five different categories, denoted by roman letters.

The categories I a and I b have the lowest water absorption capacity of only 0.5% and 3%, respectively. They are therefore suitable for frost-prone areas, as the small amounts of water absorbed can not blow up the tile even when freezing.

abrasion resistance

It is the quality criterion for tiles par excellence. Of course, porcelain stoneware tiles are significantly more resistant to abrasion than stoneware due to the significantly higher surface hardness, but there are also significant differences within the individual tile categories.

The abrasion classes, which are often used as a quality feature and for pricing, go from 0 to 5, where class 0 does not exist in practice. It is only technically defined.

Tiles in the highest abrasion class, class 5, are extremely resistant. Relegated to durability, one can say that such tiles survive decades of use without the slightest signs of wear.

slip resistance

These classes, from R 9 (non-slip) to R 13 (very non-slip), are only used in industrial and commercial areas. In the private sector no non-slip tiles are prescribed. However, the classification can still be regarded as a quality feature.

Video Board: Tile: Quality Tile at Competitive Prices! abfloors.com