Installation of the artificial turf
The artificial turf is delivered to the construction site in parts that are four metres wide and approximately 70 metres long. The three so-called base lines - the two goal lines and the centre line - are already tufted into the turf panels.
In the beginning the part with the goal line is unrolled. Then the line is aligned to the two corner flag sleeves and the goal sleeves. Once the first part has been aligned, the green parts are unrolled to the centre line. The parts are glued together to link them. This requires that the belts necessary for production are cut off if they are still there.
The parts are glued together. The elastic layers are not combined to make sure that the artificial turf has some room to move in the event of temperature changes. So-called seam tape on which the glue is applied is used for bonding. Then the individual artificial turf parts are pressed into the glue and fixed in place through continuous rolling.
Once the entire area is glued together the lining is applied. In the course of that the green surface is removed and replaced by the respective line colour. The following colours are available: White (most common), blue (usually for youth sports clubs) and yellow (very rarely nowadays).
Installation of infill material
The infill material has three major functions: It is to secure the artificial turf against shifting, allow the player stable stance and, moreover, assist force reduction of the system. The lower layer of the bedding material is quartz sand. Compared to granulate, quartz sand has a high density and is therefore very heavy. This makes it particularly suitable for fixing artificial turf in place. As quartz sand can only be applied when it is dry, dry quartz sand is required.
For application we use special spreaders ensuring that the material is applied evenly. The material is installed in several thin layers. Sand is brushed into the coating between the layers with a special circular brush. Once the entire quartz sand has been installed in the artificial turf, the granulate is applied in the same way. It is also brushed into the coating several times to ensure absolute evenness.
Right after the bedding material has been applied, the artificial turf might seem somewhat overloaded, but the strain exercised due to the matches and the rain increase the bulk density after some weeks, so the material compacts and the ideal filling level is reached.