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to create homes that use 20 to 50 percent less energy than average construction.
For example, Grigsby revealed in his slide show how using well-known advanced building concepts can help increase affordable housing, even in expensive Rappahannock. Among the building ideas the lecturer discussed in detail were passive solar design, advanced framing, superior insulation and air sealing, conditioned crawl spaces, all HVAC within conditioned spaces, “not so big,” and location of houses or buildings to take advantage of the sun (or avoid it).
The point also was made that an “affordably green house” does not necessarily
87.4%