Editor’s note: This is the first part of a two-part article. Part I will describe framing and exterior sheathing; Part II will cover window and siding installation, air sealing and insulation, mechanical systems, and finishes.

In a previous article, I described an exterior insulation upgrade that our energy-oriented company performed on an older home (see “Retrofitting Exterior Insulation,” 11/09). Early in the fall of ’09, we started work on a new home using many of the same concepts that had allowed us to dramatically improve the older home’s energy performance.

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