Thermomass

Lower level concrete wall forms went up today.  I am using the thermomass system.  This picture shows the outer wall forms, which are 9' tall and 3' wide aluminum panels.  The outer wall form is shown with rebar for the outer wythe of concrete.  Contractor is spraying a release agent to assist in stripping the forms from the concrete after the pour.

Next step is that the contractor installs the 4" wall insulation.  These insulation panels were factory fabricated to fit together like a puzzle with the forms.  This insulation provides R20 continuous in the lower level walls, not including the thermall mass properties of the concrete itself.

The 4 inches of wall insulation will be sandwiched between two 4" walls of concrete, creating a 12" total wall thickness.