Here we share some observations about and snapshots of the Passive House we had built in Oakland County, Michigan. All photographs were taken by us unless otherwise noted.

After a few weeks of mostly conventional home construction, today’s activities marked a return to the airtight and super-insulated aspects characteristic of a Passive House.

The top of the foundation wall was prepared for the 12 inch TJI vertical joists that will support the external insulation wall. Gaps were sealed, and another layer of foam insulation and a layer of wood were added. The TJIs will rest on top of this and be attached to the house. Cavities will be eventually filled with cellulose insulation.

The lower level was readied for a cement layer which will be poured to act as a heat sink for regulating the solar energy gained on sunny days. The inspector came out to examine the crawl space vapor barrier as well as the holes for the footings of the wraparound porch.

Every nook and cranny around the thermal envelope needs to have an airtight seal.