Exterior drywall plates installation

The exterior drywall is composed of 6 mm thick cement. The modulation accuracy is very important so that the plates are exactly between the uprights, since these plates can be installed horizontally or vertically in different sizes and must be in the axis of the upright to be able to anchor the next plate. For which it is necessary to leave an expansion joint 4 to 6 mm apart, which will be covered with SikaFlex.