This document, PATH Technology Roadmap: Energy Efficiency in Existing Homes—Volume Two: Strategies Defined, is one in a series of technology roadmaps created to serve as guides to help the housing industry make decisions about research and development investments.

The Partnership for Advancing Technology in Housing (PATH), administered by the Department of Housing and Urban Development, is focused on improving the affordability and value of new and existing homes. Through public and private efforts, PATH is working to improve affordability, energy efficiency, environmental impact, quality, durability and maintenance, hazard mitigation, and labor safety. To accomplish this, PATH has identified research and established priorities for technology development that will enable the home building industry to work toward the PATH mission. This priority setting process, known as “Roadmapping,” has brought together many industry stakeholders, including builders, remodelers, trade contractors, material and product suppliers, financial representatives, codes and standards officials, and public sector R&D sponsors. This is a year-two progress report for one of the four roadmap topics identified by PATH’s Industry Steering Committee. Other technology roadmap topics are: Information Technology to Accelerate and Streamline Home Building, Advanced Panelized Construction, and Whole House and Building Process Redesign.

This document focuses specifically on improving energy efficiency in existing housing. It describes the challenges, and outlines activities and accomplishments that will lead to the achievement of the vision. These include promoting new technologies, evaluating products and processes for retrofit, building capabilities among trade contractors, and identifying potential consumer incentives.

By addressing these issues through research, the home building industry will continue to play a key role in providing affordable, durable housing for America’s families.

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