About this episode

The episode discusses the effectiveness of vented crawlspaces and the implications of over-insulating window frames in building science.

Are vented crawlspaces really a bad idea—and can you actually over-insulate a window frame? The crew gets fired up tackling two topics that refuse to die in building science conversations. First up is crawlspaces. The boys dig into a bit of U.S. crawlspace history, what vented crawlspaces were originally intended to do, and why they so often fail to perform as hoped. They walk through what crawlspaces should and should not do, and why climate, moisture, and enclosure strategy matter far more ...

Topics covered

• vented crawlspaces
• building science
• window frame insulation
• moisture management
• climate impact

Keywords

• vented crawlspaces
• window frames
• building science
• moisture
• insulation

Mentioned in this episode

Organizations: U.S.

More episodes of UnBuild It Podcast

• 154 - Wildfire Zone Rainscreens & Smarter ZIP Sheathing Use · April 16, 2026 · 31 min
• 153 - Wall Details That Actually Work: Water, Air & Rainscreens · April 2, 2026 · 32 min
• 152 - Thermal & Structural Loads: Insulation, Wood, and Concrete · March 19, 2026 · 40 min
• 151 - Where Matters: Climate · March 5, 2026 · 30 min
• 150 - Social Media: The Best and Worst of Building Science · February 19, 2026 · 42 min
• 149 - I’ll Tell You Where to Stick That Opinion · February 5, 2026 · 35 min

Explore listener stats, chart rankings, contacts and more on the UnBuild It Podcast podcast page.