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The use of air retarders in roof assemblies has been somewhat common on Canada, but is relatively new in the U.S. With the publication of the International Energy Conservation Code, 2012 Edition, and International Green Construction Code, 2012 Edition, the use of air barriers in roof assemblies is now a code requirement in the U.S. This session will review requirements for the use of air retarders, how they are being used in Canada and how they will likely be implemented into roof assemblies in the U.S. Also, joint CRCA/NRCA research on air leakage rate testing of mechanically-attached single-ply roof membrane assemblies will be discussed.

1. Review basic air barrier and air retarder terminology

2. Define IECC 2012 and IgCC 2012 requirements for air retarders and the impact these requirements have on roof assemblies

3. Be knowledgeable of experiences in Canada with the use of air retarders

4. Review data derived from CRCA/NRCA's air leakage testing of mechanically-attached single-ply roof membrane assemblies

Speakers: Mark Graham, Association Executive Director, Technical Services, NRCA; Peter Kalinger, Technical Director, Canadian Roofing Contractors Association

Target Audience: Building Owner/Facility Manager, Owner/CEO/General Manager, Manufacturer-Supplier, Metal Contractor, Superintendent-Foreman, Residential Contractor, Commercial Contractor

Mark Graham, Associate Executive Director, Technical Services, NRCA, holds a Bachelor of Science degree in architectural engineering from the Milwaukee School of Engineering. Prior to joining NRCA, he was employed by F.J.A. Christiansen Roofing Co., Inc., in Milwaukee, Wisconsin, and later Wiss, Janney, Elstner Associates, Inc. For NRCA, he is the senior staff person responsible for the association's technical activities and is a contributing editor to Professional Roofing magazine. Mr. Graham is an active member of ASTM, ASHRAE, ICC and NFPA.

Peter Kalinger, Technical Director, Canadian Roofing Contractors Association has over 35 years of experience in the roofing industry, having worked for roofing contractors and roofing product manufacturing firms. Prior to joining the CRCA, he held the position of Director of Technical Services for a major engineering firm, specializing in building sciences. Mr. Kalinger has published numerous papers and articles in various technical and scientific journals. He has presented papers at national and international symposia on roofing technology. Peter is active on numerous Canadian roofing standards committees. Mr. Kalinger holds a Bachelor of Arts degree and a Masters of Public Administration from Carleton University, Ottawa, Canada.