You can move around in your shirt sleeves inside a Reliable ICF building, without heaters or fire. This is possible because these buildings are 100% insulated against heat loss through conduction (through walls & roof), convection (through air leakages from air gaps in door/ window frames or walls) or radiation (except through windows). Such an airtight and thermal bridge free construction is possible in Reliable ICF buildings because of its monolithic concrete casting technology.
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