The Thermohouse ICF (Insulated Concrete Forms) are modular wall blocks composed of 2 leaves of insulation, designed to combat interstitial Condensation, these are joined together with steel inserts. The hollow blocks have interlocking surfaces, allowing them to be stacked. Once erected, the ICF block wall acts a permanent shuttering kit for the concrete which is poured within the cavity space, insulating the concrete on both sides. Due to their lightweight and stack-able nature, ICF is much quicker to build than traditional methods, yet deliver incredibly airtight concrete structures.