GLOSSARY
REEDED STAIR TREAD
Part of a step with positive inserts.
RECTILINEARITY OF THE EDGES
Indicates if the sides of the ceramic tiles are straight.
RESISTANCE TO BENDING
Measures the capacity of the ceramic tile to bear static and dynamic loads. The higher this value in N/mm2, the more resistant the ceramic tile.
RESISTANCE TO STAINS
Measures how easily the ceramic tiles become stained. This characteristic is especially important for polished tiles. Elements such as graphite, bright/dark coloured mortar and colour markers can irreversibly stain ceramic tiles.
RESISTANCE TO SLIPPING
This is a safety characteristic which evaluates the friction coefficient between two surfaces. It is mainly expressed through 2 standards: DIN 51130 and DIN 51097.