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Insulating concrete forms (ICFs) are rigid, interlocking plastic foam forms that are dry-stacked and hold concrete in place during curing. They remain in place afterwards to serve as thermal insulation for concrete walls. ICF’s come in many different styles and sizes, but all have the advantage of being light and relatively easy to erect. ICF’s are distributed through ready-mix plants, construction supply houses, and other specialty stores and many times the ICF manufacturer offers training in use and placement.
ICFs may be used for either above - or below-grade walls. In both cases, there are significant sustainable advantages for combining these insulating forms with very ready mixed concrete. Just some of the advantages are:
- ICF walls have much higher performance R-values than wood. R-value is a measure of the flow of heat through a material: the higher the R-value, the greater the insulation. The result is lower costs for heating and cooling.
- ICF walls restrict air infiltration which eliminates dust and allergens creating a healthier home and living environment.
- ICF homes are quiet, safe during inclement weather events, and like all concrete structures offer permanent strength and low maintenance.
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