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Determining a roof system's energy efficiency and cost

Professional Roofing



energy efficiency; cost; heating; cooling; ASHRAE 90.1-1989

How much insulation is needed and how much will the insulation save me in reduced energy costs? Finding the answers to thee questions and concisely and accurately presenting them to a building owner has always been difficult. However, several recent development, which are discussed in this article, have simplified the process.

Note: Documents in this section are provided as Adobe Acrobat PDF files. In order to print and view PDF files, the Adobe Acrobat Reader software/plugin, which runs on Microsoft Windows, Macintosh, OS/2 and various versions of UNIX, must be installed on your computer. Adobe Acrobat Reader is available for download as freeware from Adobe Acrobat's website. Please note that the resolution of on-screen versions is not as high as printed versions of PDF files.

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