UnBuild It | Episode 133: Deep Dive on That Pesky Transition:

Home UnBuild It | Episode 133: Deep Dive on That Pesky Transition: Top-of-Foundation/Bottom-of-Above-Grade Wall

UnBuild It | Episode 133: Deep Dive on That Pesky Transition: Top-of-Foundation/Bottom-of-Above-Grade Wall

Should exterior above-grade wall sheathing or framing line up flush to outside face of foundation? Is sealing the bottom of the above-grade wall and foundation with a sill sealer product like Protecto Wrap Triple Guard a good idea? This sets off Jake, Steve, and Pete on balancing water protection, air sealing, and drying potential at this key transition and challenges for control layer continuity. Finally, Steve gets TMI with his sleeping arrangements with his wife... Thank you to this episode sponsor, Viewrail.

PETE'S RESOURCES:

- Protecto Wrap Triple Guard: https://protectowrap.com/wp-content/uploads/2024/11/Triple-Guard-Sales-Sheet-10_24.pdf
NOTE: Interesting that in their installation drawing, the framed wall is stepped out to line up the framing with the foundation BUT they do NOT lap the sheathing down over the foundation.

- Huber ZIP Sheathing bottom-of-above grade-wall Detail(s): https://www.huberwood.com/uploads/documents/technical/D-2.1-Bottom-of-Panel-Spacing-at-Foundation-with-ZIP-System-Sheathing-Detail-Wall-ZIP-System.pdf

NOTE: 4 details with "Scenario 4" being spot on for the UnBuild It guys...

- Above-Grade Concrete Foundation Waterproofing: https://www.greenbuildingadvisor.com/article/wingnut-testing-above-grade-foundation-wall-waterproofing

https://www.viewrail.com/