Terraklinker step tiles do not need grooves to be very safe. All Terraklinker ceramic pieces are non-slip and get R12 according to DIN 51130 norm. They are also highly frost resistant therefore they can be used with complete peace of mind in areas where temperatures may fall as low as -40 °C.
These step tiles are especially recommended for outdoor use due to their sturdiness and the good support they offer for climbing the stairs. Nonetheless we also offer a step tile model which is designed for indoors applications.