Detailing High-Performing Masonry Parapets

Tuesday, December 8, 2026 | 12-1 p.m. Eastern Time
1 LU/HSW

Masonry parapets are the first line of defense against weather exposure for the exterior wall assembly. Because they are located above the roofline, parapets face greater moisture, temperature, and movement stresses than walls below, so proper detailing is essential for durability, safety, and overall performance. Explore best practices for designing parapets that maintain water and air barrier continuity and reduce thermal bridging. We’ll discuss strategies to accommodate movement and extend service life. You’ll also learn how to assess existing parapet conditions and apply effective repair methods that enhance building performance and occupant protection.
Parapets Image

 Learning Objectives:

  • Identify the unique moisture, temperature, and movement challenges that affect masonry parapets and how these conditions impact building safety and durability.
  • Apply proven detailing strategies that maintain air barrier continuity, resist moisture penetration, and improve thermal performance for occupant protection and energy efficiency.
  • Explain methods for managing parapet and differential movement to prevent cracking, displacement, and long-term structural damage.
  • Evaluate existing parapet conditions and recommend renovation approaches that restore integrity, enhance weather resistance, and support the overall welfare of the built environment.

About the Speaker

Jeff Diqui
Director of Industry Development and Technical Services, IMI

Jeff Diqui

Jeff holds a Bachelor of Science degree in architectural engineering with a major in structural engineering from Milwaukee School of Engineering University.

He has experience in the design and construction industry dating back to the early ‘90’s of which has been focused on the building enclosure, including assessment and investigations related to moisture intrusion and structural-related issues, building condition assessments, repair/rehabilitation designs, and construction observations. Jeff has been a frequent lecturer nationally to architects, engineers, specifiers, building enclosure consultants, contractors, code officials and university students on subject matter pertaining to the importance of maintaining continuity of water, air, vapor and thermal controls of the enclosure and the ever-important interface detail. Previously, Jeff held a position where he had involvement with international projects in regions including Europe, Asia, Middle East, Africa, and Central-South America that exposed him to different design and construction practices.

Jeff remains active in the building science community through involvement in various technical committees and organizations and is a regular attendee or speaker at conferences and symposiums.

 

Brian Trimble, PE, CDT, LEED AP
Director of Industry Development and Technical Services, IMI

Brian Trimble

Brian is a professional engineer who has worked in the masonry industry for over 30 years, assisting design professionals in the design of masonry structures. He speaks frequently to local, regional, and national construction industry groups.

His career began with a brick manufacturer and he worked for the Brick Industry Association for over 20 years. For the International Masonry Institute he coordinates activities in the Western PA and Western NY areas. In addition to owners, contractors, architects, engineers, and craftspeople, he promotes masonry to a wide range of audiences.

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