Insulating Concrete Forms: Comparative Thermal Performance

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  • There was not significant difference in air leakage test results among the three homes. This lack of difference may reflect the dimensions, volume, and relatively limited wall area of these simple, affordable homes.
  • The two ICF homes were approximately 20%more energy efficient than the wood-frame house. This difference is largely due to the higher effective R-value of the ICF walls and continuous insulation at the slab.
  • BLAST modeling of energy use produced results very similar to actual energy use. The results suggest that the contribution of thermal mass and ground-coupling effects to the overall energy efficiency of the ICF homes was not significant.

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