There are common misconceptions regarding ICFs and the current energy codes. While many people involved in the home design, construction and inspection process are familiar with the R-value requirements of a cavity wall, most do not understand that different standards apply to ICFs. Wall Types Cavity walls are usually wood or steel framed with insulation between framing members for the outside walls. Most single family structures in the United States are built this way. Cavity walls may meet local and national building codes, but lack the performance and resilience when compared with ICF mass walls. The International Energy Conservation Code
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