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A structural insulated panel (SIP) roof has no embedded lumber in the structure, and therefore nothing substantial for attaching PV array and solar hot water mounts. Single or double lumber splines could be put into the panels, or I-joists at 4-foot intervals could be added.
Article in the SIPA Technical Bulletin (No. 11) comparing the earthquake resistance of light-frame wood shear wall construction to residential construction with structural insulated panels (SIPS).
Information guide listing Building America Solution Center guides that describe ways to air-seal and insulate a new or existing home's walls to resist heat gain.
Guide describing materials and methods for incorporating thermal mass into the construction of a home for temperature regulation, energy savings, and resistance to extreme heat and cold.