What materials are used in Insulated Concrete Forms (ICFs)?

Insulated Concrete Forms (ICFs) are primarily made from insulating materials like expanded polystyrene (EPS) or extruded polystyrene (XPS), which provide effective insulation properties. These forms consist of two layers of insulation with a space in between for concrete to be poured. This construction technique not only enhances thermal performance but also improves energy efficiency in buildings. The use of these specific materials helps in creating sturdy, insulated walls that meet modern building standards for energy efficiency.

The other materials mentioned, such as brick and mortar or wood and insulation, do not relate to ICFs, as they involve different construction methods and do not provide the same insulated concrete form system. Concrete and sand, while they are part of the ICF process, do not contribute to the insulating properties which are key to the effectiveness of ICFs.