was asked to fit a builders supply and supply to a caravan at a site with this icf stuff. it is basically 'polystyrene' that is filled with concrete and is meant to be super energy efficient when cured. can do all sorts of shapes and designs with it. they use timber frames to hold it in place when poured etc... if they get the timber support or polystyrene wrong then it can collapse when poured.
seemed a lot of work to me for barely noticeable gain, its meant to be cheaper but only if you have a good team doing the work. i assume inside the walls will be dot and dabbed and you will run cables in capping? as you will likely find you arent allowed to go cutting into the polystyrene or concrete for fear of affecting the thermal qualities and such nonsense.
