In January, NRCA published The NRCA Roofing Manual: Architectural Metal Flashing and Condensation and Air Leakage Control—2018, its latest volume of The NRCA Roofing Manual. This volume revises, updates and supersedes the 2014 version. Following is a brief overview of some of the more significant changes in the new manual.
The most notable change between the 2014 and 2018 volumes is the elimination of the 2014 volume's Reroofing Section. Beginning with The NRCA Roofing Manual: Membrane Roof Systems—2015 and continuing with The NRCA Roofing Manual: Metal Panel and SPF Roof Systems—2016 and The NRCA Roofing Manual: Steep-slope Roof Systems—2017, roof system-specific reroofing guidelines are provided within each volume of the manual. For example, reroofing guidelines, including roof system removal and replacement and re-cover criteria applicable to membrane roof systems, is provided in Chapter 9-Reroofing of The NRCA Roofing Manual: Membrane Roof Systems—2015.
In the 2018 manual's Architectural Metal Flashings Section, there are minimal changes.