By Others – That Elusive Subcontractor Responsible for Transitions

Tuesday, May 8, 13:30 – 14:30

A comprehensive understanding of the environmental separators for water, air, thermal and vapor allow a designer to select appropriate strategies for a high-performance enclosure.  This understanding can be applied to a wall, roof and fenestration.

With so many systems, transitions, trades and complexities, failures occur often due to improper detailing, sequencing or execution.

This presentation will review the science of the enclosure and focus on the transitions and details that make a difference.  With the use of real life job site photo’s, details and sample solutions to these transitions, it will provide individuals with a good understanding of how to integrate complex systems to effectively control heat, air, moisture and vapor.

Learning Objectives:

  1. Describe how transition details can impact the performance of the Building Enclosure.
  2. Assess how improper detailing can lead to reduced energy efficiency.
  3. Identify the increase in risk of condensation due to poor transition details.
  4. Recognize the various compatibility and logistical issues that are related to the options available to achieve proper transition details.
Level of content:
Basic | Intermediate
Construction & Testing

Andrew Dunlap, AIA, CDT, LEED AP, NCARB


Andrew Dunlap’s primary work experience is in the analysis and development of exterior building enclosures, including historic buildings. Exterior enclosure expertise is comprised of roofing, skylights, windows, curtain walls, rainscreen/cavity walls and waterproofing, and includes development of remediation options and construction documents for corrective work. Andrew’s work focuses on providing energy efficient designs as he regularly participates in validating designs for energy code compliance or to exceed code requirements. Project responsibilities include the collection of detailed building information, investigation and analysis of existing conditions, computerized thermal analysis of building systems (WUFI 5.2, THERM 7, WINDOW 7, and other software packages), formulation of remediation plans, preparation of construction documents for remediation, and construction contract administration including field observation and systems testing. This work often includes performing diagnostic field water tests as part of the forensic investigations or used to validate installed conditions.