A combination of Campine and Old Quaternary clays are mixed and kneaded together to obtain the desired elasticity. Minerals are added before the clay is crushed and prepared.
The extruder then compresses the clay through pressure and suction into a long rectangular shape, and the desired brick module is cut using a die. The wet bricks are dried for 4 days then fired in an automated tunnel kiln, reaching temperatures of 1250°c. The result is a crisp, square, modular, through coloured facing brick with extremely good tolerance.