Above-Grade to Below-Grade Continuity: Applications, Performance, and Details

In the world of high-performance building enclosures, the transition from above-grade wall systems to below-grade waterproofing continuity requires more than just high-quality products; it demands a sophisticated understanding of how systems interact across disparate assemblies. This technical webinar dives deep into the “gap” that often exists between the architectural facade and the foundation. We will explore the fundamental criteria for whole-building airtightness and define the specific challenges of various enclosure types, occupancies, and design criteria. Participants will gain a comprehensive overview of modern waterproofing technologies, comparing liquid-applied, self-adhered, and sheet membranes. The session will contrast vertical and horizontal applications, as well as the unique detailing requirements for pre-applied vs. post-applied systems. Through a series of detailed transition scenarios, including above-grade walls to below-grade footings and horizontal plaza waterproofing. Beyond the technical drawings, we will discuss the “human” side of building science: specifying for success. We will cover how to eliminate scope gaps and foster essential coordination between designers, manufacturers, and contractors to ensure a seamless, high-performance building enclosure.

Learning Objectives:

1. Analyze the critical role of whole-building enclosure continuity for building performance.
2. Identify appropriate waterproofing technologies for various above- and below-grade scenarios.
3. Apply robust detailing strategies for transitions between above-grade and below-grade systems
4. Develop clear specifications that facilitate coordination and eliminate technical gaps.

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Benjamin Meyer, AIA, NCARB, LEED AP, Building Enclosure Business Director, Siplast

Benjamin Meyer is the Building Enclosure Business Director with Siplast. Previous experience includes: enclosure consultant principal, technical management for enclosure products, architecture, real-estate development and construction management. Serves as ASHRAE 90.1 Envelope Chair and Full Voting Member, Director of ABAA Standards Institute, and past LEED Technical Committee Member.

Herman Lopez, BE Business Development Manager, Siplast

Herman Lopez is the Building Enclosure Sales Manager for Siplast. His previous experience includes National Commercial and Multifamily Account Manager for DuPont Building Performance Solutions and Director of Specifications for Tamlyn Products. Herman has over 25 years of experience selling building enclosure products and other construction-related materials used in the residential, multi-family, and commercial construction industries.