David Kayll, Principal and Director, will be presenting OBC Part 5: Understanding Durability at the annual Royal Architecture Institute of Canada (RAIC) and Ontario Association of Architects (OAA) joint conference. Presentation Overview: OBC Sentence 5.1.4.2 (3)  requires that: "...assemblies exposed to the exterior shall be in accordance with good practice such as described in CSA S478: […]