This "Hemp" Home Cuts Heating to $0 All Winter. Why Did Builders Abandon It?

Hempcrete DIY, hemp-lime wall, natural building materials, hydraulic lime binder, sustainable construction. Want to build with hempcrete yourself? This video breaks down materials costs (400 to 700 dollars for a starter accent wall), the mixing ratio of hemp hurd to lime binder, curing times, and the biggest mistakes that trap moisture and ruin a build. We also dig into the real building science behind hempcrete's insulation and thermal mass properties, why it outperforms standard insulation in daily temperature swings, and how climate affects cure time in different US regions. Plus: the history of why this thousand-year-old French farmhouse technique disappeared for decades, and how a 2023 code change is finally bringing it back into modern residential construction. 0:00 – The "Hemp Home" Heating Claim 0:52 – The Real Cost of Winter Heating 1:45 – What Is Hempcrete? 2:55 – The Lab Numbers: R-Value & Thermal Lag 4:05 – The Hidden Carbon Benefit 4:55 – A 1,500-Year-Old Building Technique 5:50 – Why Hempcrete Was Abandoned 7:05 – The 2023 Code Change & Modern Comeback 8:25 – Real-World Case Studies (Massachusetts & UK) 9:20 – How to Build Your Own Hempcrete Wall 10:50 – Limitations You Need to Know 11:50 – Climate Considerations by Region 12:20 – Final Verdict & What's Next #Hempcrete #SustainableBuilding #GreenHome #NaturalBuildingMaterials #BuildingScience #EcoFriendlyHome #ThermalMass #OffGridLiving #HempConstruction #HomeInsulation