Design Guide

         The Metal Construction Association (MCA) has published a new design guide, Retrofit Metal Roofing, a culmination of practical knowledge and expertise by five of MCA’s member companies that manufacture products relating to retrofit metal roof systems.  The 140-page document can be downloaded at no cost from MCA’s website.  This new comprehensive manual provides the latest code-compliant and market-ready materials, methods, and best practices to reroof buildings using state-of-the-art metal roofing and light-gauge steel framing systems. 

         Chapters are dedicated to market history, fundamentals, applications, framing systems, assembly details, metal roofing systems, and energy savings.  Detailed illustrations show where fully integrated solar hot air and water as well as power generation photovoltaic equipment are being incorporated into new metal roof systems.

         The implementation of retrofit metal framing systems actually began in the late 1970’s.  These systems, called sloped build-up systems, offer design professionals several options ranging from low-slope functional systems for discharge or diversion of roof rainwater, to steep-slope architectural applications.  Retrofit metal roofing has proven to be an economical and functional solution for building owners seeking to beautify an existing structure.  MCA would like to acknowledge ATAS International, MBCI®, McElroy Metal, Metal Sales™ Manufacturing Corporation, and Roof Hugger LLC for their contributions to this manual.

         MCA brings together a diverse industry for the purpose of expanding the use of metal in construction through marketing, research, technology, and education.  Companies involved in MCA gain tremendous benefit from association activities that focus on research, codes and standards, market development, and technical programs.  MCA’s market development efforts increase the use of metal materials in construction through the education of the building and design communities about the benefits of metal.

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