Metal Internal and External Sheet
Thicknesses of the inner and outer metal sheets of an insulated panel, are selected from the manufacturers load tables, based on allowable spans between the panel structural supports. The metal sheets can be galvanized steel or aluminum.
Panel steel sheets are hot dip galvanized by a continuous process in accordance with EN10142 Standards, with zinc coating weights varying between 100 gr/m2 and 275 gr/m2. Steel galvanizing is very effective against corrosion. For insulated panels, galvanized steel should be prepainted by coil coating. The thickness of galvanized sheets at load-bearing layers should be a minimum of 0.50mm.