In the food industry, but today also in other types of buildings, many m2 of industrial PIR-sandwich panels are used. As exterior and interior walls, ceilings (walk-on) and roofs. Different thicknesses, coatings and colours can be selected to suit the project-requirements. Various standard details can be applied but also project-specific details can be used. The panel and steel design has to go hand in hand as the panels have to be fixed to the steel purlins. With their high insulation values very energy-efficient cold and freezer rooms can be built. Also large ceiling spans can be made even with walk-on load capacity. This enables the use of a ceiling void to place production and refrigeration pipe-runs and also HVAC-ducting can be positioned out of sight. Inspection and maintenance can then be done without interference of the production proces.