IIBEC Canadian Prairies Chapter: The Asphalt Shingle Valley Debate: Open, Closed, or California? July 23rd This presentation will be delivered by Jon Peat, RRC, RRO, and will provide an overview of the various Roof Imaging and photography requirements and recommended practices – applicable to Building Enclosure projects as well. Learning Objectives include: Review NBC, ABC, and IEBC Code requirements for asphalt shingle valleys Discuss Open vs. Closed vs. California valley […] + Add to Google Calendar + iCal / Outlook export 00 days 00 hours 00 minutes 00 seconds Date Jul 23 2026 Time 11:45 AM - 1:00 PM Category All Chapters Canadian Prairies Share this event