Critical aspects of roof system designs are often left unad-dressed, resulting in incomplete contract documents. This course identifies the information roofing contractors generally need from roof system designers to provide complete and building code-compliant low-slope roof systems. While generally written from the perspective of new construction, the information presented here can also be applied to roof replacements in most situations. Guidelines in this article are based on The NRCA Roofing Manual and practices compliant with the roofing-related provisions of the 2012 edition of the International Building Code (IBC 2012). Even in jurisdictions that have not adopted IBC, its provisions are often considered an indication of the standard of care for roof system design. Part 1 of this course covers guidelines applicable to all types of roof membranes. Part 2, discusses guidelines for specific roof membranes and roof system cover boards.
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