Slab on Grade Vapor and Thermal Transition detail- An Example from LG Squared

Dec 09, 2025

Check out this Instagram post from Rate It Green member Chris Laumer-Giddens of LG Squared. He explains why he chose to use a liquid-applied WRB on this project and the expected results. One of the keys to a tight building envelope is good details for the transitions. Chris explains how this project achieves good continuous control layers for the vapor and insulation by simplifying the details.

What kind of WRB's do you use on your projects?

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A post shared by Chris @ LG Squared (@lgsquared_inc)

Replies: 1

Allison Friedman6 months ago

I appreciated learning from this video, thanks Matt - and Chris! It's helpful to hear and see the role each of the 3 Polyguard components plays in relation to a live project. I also appreciated Chris' two tips for a tighter envelope - especially since the slab-to-foundation transition is where some projects fail. Gosh, the Poly Blue sure is bright! :) You gotta see it to believe it!

Slab on Grade Vapor and Thermal Transition detail- An Example from LG Squared -2

Matt Hoots

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I own SawHorse, Inc, a green design + build firm in Atlanta, GA. We focus on high-performance buildings and create showcase houses to demonstrate cutting-edge building techniques.

Slab on Grade Vapor and Thermal Transition detail- An Example from LG Squared

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