The Prescriptive Method for Connecting Structural Insulated Panel Roofs to Concrete Wall Systems, a new study released by the U.S. Department of Housing
The Prescriptive Method for Connecting Structural Insulated Panel Roofs to Concrete Wall Systems, a new study released by the U.S. Department of Housing and Urban Development (HUD), shows builders how to improve the durability and energy efficiency of their homes by combining structural insulated panel (SIP) roofing and concrete wall systems. Engineering and connection details provided in the study give builders a reliable and consistent method for connecting the two systems in one- and two-family dwellings, thus fulfilling a need for standardized connection systems between two increasingly popular materials used in residential construction. Homes built in high wind or seismic zones, however, are not covered in the Prescriptive Method.
Notes Structural Insulated Panel Association (SIPA) Executive Director Bill Wachtler, This document gives builders and design professionals the right connection systems, which have been tested and engineered for most residential applications. The new prescriptive guidelines typically will reduce the need for additional engineering during the design phase of projects incorporating the two systems, he adds, thereby saving costs often passed to the homeowner.
Funding for the study was provided by HUD’s Partnership for Advancing Technology in Housing program that aims to break down barriers to widespread implementation of innovative housing technologies. Support in developing the study was provided by SIPA and Portland Cement Association.
Structural insulated panels comprise a core of rigid foam insulation sandwiched between two facings, typically made of oriented strand board (OSB). Manufactured as large as 8 ft. _ 24 ft., SIPs are extremely energy efficient, making them suitable for roofing applications.
The Prescriptive Method covers all types of concrete wall systems, including insulating concrete forms (ICF), concrete masonry, removable form systems, precast wall panels, and autoclaved aerated concrete products. ICFs and other concrete wall systems provide a high level of thermal resistance for an energy-efficient building envelope, as well as solid, continuous, and airtight walls that prevent leaking of heated or cooled air.
According to Wachtler, the Prescriptive Method could be a growth driver for both SIP and concrete industries. Adds PCA Residential Technology Manager Donn Thompson, Through the specifications provided by this research, builders will be able to reduce costs while more easily building high-quality, energy-efficient homes. This truly collaborative effort brought together all the different concrete building system producers with SIP manufacturers to ensure all practical aspects of the new technologies were addressed. The complete Prescriptive Method is available at www.cement.org, www.sips.org, or www.huduser.org.