Energy Guard Foam Insulators began work just before Steven departed to Berlin for ShowStoppers @ IFA. Steven returned to an insulated house, almost ready for drywall — if only the low voltage and structured wiring decision was made and the house cabled for network, telephone, AV, security.

Even at this stage, the insulation is keeping out some of the Texas heat. Two weeks ago, if you walked upstairs, the thermal layer boundary in the stairwell hit you in the face and triggered sweat. Not now. The temperature difference between the cooler downstairs and warmer upstairs — heat does rise — is probably less than 10 degrees.

Here are a couple of shots of the foam sprayed into the stud bays on the exterior walls and underside of the roof, and conventional batts on interior walls used as soundproofing between rooms.