2026 Convention Session Course: Is Wood Good? Wind Uplift Performance of Mechanically Attached Roof Assemblies: (Baskaran)

2026 Convention Session
 Is Wood Good? Wind Uplift Performance of Mechanically Attached Roof Assemblies
(Baskaran A., Shyti F.)

Course Overview
This session was originally presented at the 2026 IIBEC Convention & Trade Show in Sacramento, CA. 

This course includes the following required components.

• recording of the live session
• summative assessment consisting of 10 multiple-choice questions
• course evaluation survey

Description

Wood decking is commonly used in residential roofing assemblies and is gaining popularity in commercial roofs due to its ease of installation and cost-effectiveness. However, numerous instances of failures and damages have been noted in oriented standard board (OSB) decking used in mechanically attached systems that were less than 5 years old, despite not being exposed to significant weather events. To address these failures and to identify acceptable wood deck types for commercial roofing, Special Interest Group on Dynamic Evaluation of Roofing Systems (SIGDERS) completed extensive dynamic wind uplift experiments on mechanically attached membrane roof assemblies with wood decking. This comprehensive study involved both dynamic small-scale and system-level investigations following CSA A123.21, “Standard Test Method for the Dynamic Wind Uplift Resistance of Membrane-Roofing Systems.” The study assessed four different wood deck types, various mechanically attached membrane types, and two commonly used fasteners from various sources while keeping the other above deck components consistent.  This presentation will discuss the data from over 200 small-scale specimens along with wind uplift resistance findings from more than 20 full-scale mock-ups. Key insights into the performance of various wood decks and recommendations tailored specifically to commercial mechanically attached membrane roof assemblies will also be presented.

Speaker/Author:

Bas Baskaran, F-IIBEC, PhD, P.Eng
Principal Research Officer
National Research Council of Canada

Author:

Flonja Shyti MASc, PEng
Research Council Officer
National Research Council of Canada

Course Access
Courses are accessible in LearnUpon for one year from the date of purchase.

Course Recommended Prerequisite(s): N/A


IIBEC Core Competencies: Roofing

Knowledge Level: Intermediate

Disclaimer
The views and opinions expressed in the session content at the 2026 IIBEC Convention & Trade Show are those of the content author(s)/speaker(s) and do not necessarily reflect the policies or positions of the International Institute of Building Enclosure Consultants (IIBEC). IIBEC makes no warranty, whether express or implied, as to the completeness, accuracy or validity of the information provided.

Credit Start Date 1/23/26           
Credit Expiration Date  1/23/29

Continuing Education Credit Statement
This course is approved for 1 IIBEC CEH
This course is approved for  1 AIA LU/Elective
AIA Course Number: CONV26_29_OD
AIA Provider Number: G024

Continuing Education Credit Claim Information

To claim IIBEC CEHs and download a Certificate of Completion, learners are required to complete all components of the course, including a passing score of 70% or higher on the summative assessment.  Participants are provided unlimited attempts to complete the summative assessment with a passing score of 70% or higher.

• After completing the course requirements download a Certificate of Completion. 
• Participants are responsible for self-reporting IIBEC CEH credit by uploading their Certificate of Completion to their IIBEC Portal. For assistance in self-reporting CEHs, please reach out to: cehs@iibec.org
• If you are a member of AIA and would like IIBEC to report your participation in the course to AIA, there is a place in the course evaluation survey to input your AIA member number.

AIA CES Provider statement

IIBEC is a registered provider of AIA-approved continuing education under Provider G024. All registered AIA CES Providers must comply with the AIA Standards for Continuing Education Programs.  Any questions or concerns about this provider or this learning program may be sent to AIA CES (cessupport@aia.org or (800) AIA 3837, Option 3).

This learning program is registered with AIA CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. AIA continuing education credit has been reviewed and approved by AIA CES. Learners must complete the entire learning program to receive continuing education credit. AIA continuing education Learning Units earned upon completion of this course will be reported to AIA CES for AIA members. Certificates of Completion for both AIA members and non-AIA members are available upon request.