Consisting of solid one-piece pre-cut SIP units, the Insulspan Structural Insulated Panel System comes ready to assemble as wall, floor, or roof components, reducing construction time and improving efficiency, the company says. According to the firm, the system’s roof and wall assemblies offer a 40% to 60% reduction in heat loss and significantly reduce air leakage. 800.726.3510. www.insulspan.com.