Do you want natural stone but need a lightweight solution? The robust composite panels, which can be up to 29mm thick, consist of natural stone/ granite bonded to a lightweight aerated concrete base. Airtec has several completed sites in the UK. Airtec Stone is made in Germany, where it can be cut to almost any size for your project, even up to sizes as large as 3000x1200mm. Whilst not the cheapest façade material, Airtec Stone is natural stone but at a fraction of the weight of normal stone facades at typically only 22-45KG per sqm.