Want to build a more comfortable energy-efficient home?

Six construction steps. One simple package.
= Less labor
= Lower construction costs
= Faster builds

In a recent lab test, when exposed to a sudden -31°f temperature,
an ICF wall allowed the temperature of the interior chamber to
maintain at a comfortable 70°f for a full two days without the heat
source even turning on once! (With a wood wall the heater turned
on almost immediately.)