Protected Membrane Roof Systems

December 02, 2020
12:30 PM - 1:30 PM
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Provides a comparison of the functional and physical features of PMR systems to conventional low-slope roofing applications. Includes a discussion about the ASCE 7 standard and its impact on wind uplift design and how weather events such as hail impact roof design.

Learning Objectives

• Compare the components, characteristics and cautions of conventional low-slope roofing assemblies to determine their impact on a building's energy use, safety and service life

• Explain why a Protected Membrane Roof (PMR) assembly improves the durability and long-term performance of a roof by preserving the insulations efficiency and reducing damaging stresses a roof experiences under temperature change and physical abuse

• Discuss the importance of proper wind uplift design and wind testing protocols, and review the changes within the latest version of ASCE 7

• Explain why a PMR assembly with concrete-topped insulated roofing panels can eliminate major causes of leaks and roof failures by examining how it protects the waterproofing membrane and insulation from wind, hail, UV, thermal cycling and physical abuse

• Identify the four ballast design options for a PMR assembly and discuss how they can contribute to a sustainable design strategy by examining how they reduce rooftop temperatures and the heat island effect.