Framing Is Progressing

The framing is progressing very well.
We opted to use open-web manufactured floor trusses to minimize the amount of OSB (oriented strand board) in the interior living space.  OSB has a lot of formaldehyde in it and it off-gasses into your living space.  Dimensional lumber was out of the question due to the spans in the design.
This photo shows the double-wall depth – 13″ from face to face.  That cavity will eventually be an +R50 wall.  The blue board (or black board when viewed from outside the house) is a structural insulation board (BP R4 panel).  It is what puts us over R50.  For more detail, see  the post “Anatomy of a Double-Wall”.
This photo gives you some idea of how big the south windows are.
And here is the opening for the vaulted ceiling – a two-story open space in the middle of the house that represents about 20% of our heating capacity.
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