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Right – Insulated concrete forms (ICFs) provide the insulated stem wall for the slab-on-grade foundation for this SIP house.
Right – The foundation of this ICF home was constructed of ICFs that were set in place on a gravel bed, then 3.5 inches (R-36) of closed-cell spray foam was sprayed directly onto the gravel, providing an effective air, vapor, and thermal barrier.
The Habitat affiliate makes its own “ICF” foundation walls with rigid foam held in place with wood spacers.