Premier Building Structural Insulating Panels achieve an R18
Brian from Premier Building spoke with buildaroo.com at the 2009 PCBC conference about the company's structural insulating panels (SIPs), an alternative to conventional wood framing. The structural insulating panels consist of two OSB plywood boards bonded with an ESP foam. ESP indicates that the foam is generated by heat and steam, so there is minimum "off-gasing." Moreover, this product contributes 26 and 46 LEED points for residential and commercial purposes respectively! Catcam software is used to "buzz out" the 8 x 24 SIPs, and this translates to an astonishing 40-60% decrease in labor. For those that love to keep heat within homes, SIPs would be appealing because in addition to a R score of 18 (compared to conventional wood framing's R 13), there is no air movement within the foam which translates to heat retention. Furthermore, SIPs have a ACH (air changes per hour), score below 1; this is impressive when compared with an average ACH score of 3 that can be achieved by a gifted builder using conventional wood.