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Home | Resources | Products Save 20 percent on all NRCA technical manuals, publications and DVDs until Nov. 30. Click here to visit NRCA's online store. EnergyWise Roof Calculator Online This Web-based application allows roofing professionals to construct virtual roof assemblies to evaluate thermal efficiency and estimate energy costs via comparison of other roof assemblies (at ground level) absent other building envelope components. It also contains minimum thermal insulation requirements established by ASHRAE Standard 90.1-1999. Click here to access the EnergyWise Roof Calculator Online. The NRCA Green Roof Systems Manual 2007 Green roof system technology and building construction continue to undergo changes, and a number of criteria, including climate and geographic location, code requirements, slope and drainage, and the structural system warrant careful consideration before designing a green roof system. To address these issues, NRCA has released its first technical manual dedicated to green roof systems. NRCA members can purchase the manual for $75; the nonmember price is $150. Click here to order The NRCA Green Roof Systems Manual 2007. The NRCA Guide to Roof Coatings Published in 2007, this new guide provides an objective discussion about the application of various types of roof coatings, where they may best be used and what preparations are essential for their successful performance. It also provides generally acceptable guidelines for the application of common roof coatings and roof coating systems to various types of roof surfaces. NRCA members can purchase the manual for $20; the nonmember price is $40. Click here to order The NRCA Guide to Roof Coatings. Guidelines for the Design of Energy-efficient Roof Systems This manual is intended to assist design professionals who want to specify energy-efficient roof systems, as well as those who need to meet the requirements of the American Society of Heating, Refrigerating and Air Conditioning Engineers Inc. (ASHRAE) Standard 90.1-1999, "Energy Efficient Design of New Buildings Except Low-Rise Residential." NRCA members can purchase the manual for $35; the nonmenber price is $70. Click here to order Guidelines for the Design of Energy-efficient Roof Systems.
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