Uploaded January 2026 | Updated September 2026, 47 minutes ago

---

In this video, we dive into the serious flaws of common concrete masonry unit (CMU) wall assemblies, particularly in the Southern United States, focusing on how the lack of a water control layer leads to moisture intrusion. We also highlight how the combination of highly porous block and vapor-impermeable roof membranes creates major condensation issues in exposed areas like parapet walls.

*A Moisture Management Guide For Residential Remodels (eBook)* : asiri-designs.com/shop/ols/products/moisture-management-for-residential-remodels

*Get our High Performance CAD Details* : asiri-designs.com/shop

*Bob Kelly's Wickright System* : wickright.com

*150+ Free Building Science Articles* : asiri-designs.com/resources-1

*Request Building Science Consulting Services For Your Project:* asiri-designs.com/consulting