Building polystyrene blocks Building with polystyrene blocks – the latest technology Size 100x35x25 cm Also can provide training for building your project or we can build it for you. What is Insulated Concrete Formwork construction? The ICF system consists of lightweight blocks (also known as forms) which are usually made from expandable polystyrene (EPS). The interlocking foam blocks are easy to stack to build walls. This cuts out the need for mortar as used in a conventional build. The foam panel framework is reinforced with steel rods or Rebar (reinforcement bar) to lock them into place. Each block can provide up to 1.1 metre2 of wall area. Concrete is then pumped into the cavities. It’s energy saving technology Please feel free to contact us.