building envelope Archives - SuperForm

The ICF Cost Comparison Most Builders Get Wrong

By Keelan Unruh | April 2, 2026 |

Gouache painting of stick frame building construction beside a gray wall under a pale blue sky, sandy ground below

The 3 to 5 percent ICF premium is real, but most builders calculate it against the wrong scope. Here is how to run an honest ICF cost comparison that accounts for insulation, sheathing, HVAC sizing, and lifetime energy costs.

SIP Builders Are Winning More Work by Adding ICF Foundations

By Keelan Unruh | March 23, 2026 |

Watercolor illustration of a SIP-ICF hybrid foundation cross-section showing wall panels meeting insulated concrete form...

SIP builders have always had a strong above-grade answer. The gap was always the foundation. ICF closes that gap, and the builders pairing both systems are winning work on envelope performance alone.