The Perfect Wall

Course Description

The concept of the Perfect Wall is probably the very best way to start learning about building science. It’s unbelievably helpful at describing the relationships between the control functions in our walls and the finish functions. This presentation explains the elements of the Perfect Wall, their relationship to each other, and why the wall works in every climate. We also discuss how standard cavity-insulated walls differ from the Perfect Wall, why they work, and what the big deal about the permeance of our building materials is.

Course Instructor Christine Williamson

Course Length 15:25

Published 15 Sep 2022

Please note: viewing this course and completing this quiz do not currently count towards AIA CEU credits.

Keywords: the perfect wall, water control membrane, thermal control, insulation, condensation, permeance, water vapor, vapor barrier, air barrier, WRB, water resistive barrier, water management, building science, building enclosure design


About Building Science Fight Club

Christine Williamson - Assoc. AIA

Building Scientist | Instructor

Christine Williamson has spent her career in building science forensics, discovering why buildings fail and working with owners, architects, and builders to remedy the problems. She is the founder of the Instagram account @BuildingScienceFightClub, an educational project that teaches architects about building science and construction.