Join the International Institute of Building Enclosure Consultants for IIBEC’s 2025 Building Enclosure Symposium (BES), taking place October 26–28, 2025, at the historic St. Louis Union Station Hotel. This in-person, interactive event brings together top minds in the building enclosure industry for two days of expert-led education, discussion, and networking.
At IIBEC’s 2025 Building Enclosure Symposium (BES) attendees will connect with 300+ consultants, architects, engineers, design professionals, and specialists in roofing, waterproofing, fenestration, cladding, and exterior wall systems. Attendees can share insights and stay ahead of industry trends.
Why Attend?
Expert Speakers
Learn cutting-edge, relevant solutions for design, construction, below-grade waterproofing, restoration, sustainability, and building enclosure commissioning through 20 concurrent and 2 general sessions.
Networking Opportunities
Connect with the best experts in the building enclosure industry and over 30 manufacturers of roofing, waterproofing, and exterior wall products. Two networking receptions will also allow you to reacquaint with old colleagues and make new, meaningful connections. These receptions are the perfect opportunity to expand your network and find new ways to get involved.
