Benefits of a Rigid Cover Board in Commercial Roofing Systems

Sponsored by Georgia-Pacific Gypsum

View PDF

Learning Objectives:

  1. Discuss the evolution of roofing cover boards from the 1970s to present day, particularly in light of the use of single-ply membranes.
  2. Explain how the forces of nature (i.e., fire, wind uplift, moisture, hail/puncture, foot traffic, and sound) affect roof function and durability of different types of roof cover boards.
  3. Summarize the advantages related to the construction process and cost benefits when including a cover board in all types of commercial roof assembly design.
  4. Identify the roof system types, specialty systems (i.e., photovoltaic and vegetative roofs), and attachment options that can be utilized specifically with glass mat gypsum cover boards.


AAA 1 Structured Learning Hour
AANB 1 Hour of Core Learning
AAPEI 1 Structured Learning Hour
SAA 1 Hour of Core Learning
MAA 1 Structured Learning Hour
NSAA 1 Hour of Core Learning
OAA 1 Learning Hour
NLAA 1 Hour of Core Learning
NWTAA 1 Structured Learning Hour
This course can be self-reported to the AIBC, as per their CE Guidelines.
This course is approved as a Structured Course
Approved for structured learning
This course is approved as a core course
Approved for Core Learning
Course eligible for OAA Learning Hours
This course is approved as a Core Course
Course may qualify for Learning Hours with NWTAA
This course can be self-reported for Learning Units to the Architectural Institute of British Columbia

The objective of this course is to gain a better understanding of the value rigid cover boards deliver to commercial roof assemblies, how they perform in adverse conditions, and the characteristics of each major type of board.



Georgia-Pacific Gypsum Dens® Solutions are industry trusted, high-performing fiberglass mat gypsum panels suitable for your wall, roof, ceiling and floor projects. Dens®Solutions carry the mark of our valued heritage in Gold®, our patented color, as a visible standard-bearer of our position as the first manufacturer to create a fiberglass mat board and as a relentless innovator of strength and moisture resistant products for over 30 years. Dens® Solutions answer building challenges with ingenuity.