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Episode 9: Why use hard roof coverboards?

Nov 17, 2025

Learn the science behind hard roof coverboards and the benefits of using them to extend the life of a roof system.

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Buildings such as data centers, distribution facilities, big box retailers, schools and hospitals contain precious lives and expensive equipment. The roof system is essential to protecting these assets from everyday service traffic and wind pressures to extreme weather events such as hail, hurricanes and tornadoes. Hard roof coverboards offer numerous benefits that enhance the durability, safety and performance of the entire roof assembly.

In this episode, Chris Whitmire, director of product marketing for National Gypsum, talks to Warren Barber, senior manager gypsum & specialty systems/DEXcell, about the science behind the benefits of using DEXcell Roof Boards, manufactured by Gold Bond Building Products, LLC and PermaBASE Building Products, LLC, which are affiliates of National Gypsum Company.


Listeners will learn:

  • What are hard coverboards and their essential role in commercial roofing systems
  • How hard coverboards provide a smooth, flat surface for the membrane and protect insulation from foot and equipment traffic
  • How hard coverboards improve the roof's performance ratings against fire, wind, and hail
  • The role of hard coverboards in improving thermal performance


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