Insulating Concrete Form (ICF) is a system of formwork for concrete that stays in place as permanent building insulation for energy-efficient, cast-in-place, reinforced concrete walls, floors, and roofs. The forms are interlocking modular units that are dry-stacked (without mortar) and filled with concrete. The forms lock together somewhat like Lego bricks and serve to create a form for the structural walls or floors of a building. ICF construction is becoming increasingly commonplace for both low rise commercial and residential construction as more stringent energy efficiency and natural disaster resistant building codes are adopted.
Read more about Insulating Concrete Form: Development, Construction, Building Process, Cost
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