ICF stands for Insulated Concrete Forms. They are sort of Lego-ish building bricks made of polystrene - typically about 3 inches thick on each side and held together with plastic ribbing inside. They are stacked on top of each other to form the wall structure. Rebar is then placed inside and the cavity is filled with concrete. The cavity is typically 4 or 6 inches wide. Window and door openings are cut out and blocked before the concrete pour. Drywall is typically attached on the inside and pretty much any exterior finish can be applied. The insulation comes from the polystyrene, which stays in place. They are not particularly popular but if you have a builder who is experienced with using them then they are an excellent way to go. The closest thing in the Villages are poured concrete walls where removable metals forms are used. These, of course, lack the insulation of the polystyrene that remains with ICF.
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Originally Posted by Fishers2tall
Ok for those who might not know what is ICF?
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