Gaiacrete™ and Hempcrete Insulation — The Natural Alternative to Toxic Building Materials
A bio-based wall system with carbon-storing potential, lime-driven fire resistance, and a mold-resistant profile when properly installed — designed for new construction and existing-home retrofits across the United States.
Why Choose Gaiacrete™ and Hempcrete Over Traditional Insulation?
Carbon-Storing
Hempcrete sequesters CO₂ in its hemp hurd over its service life, lowering the building's embodied carbon footprint.
Fire-Resistant by Design
The lime-based binder gives hempcrete walls strong reaction-to-fire performance — no added halogenated flame retardants.
Thermal Mass + R-Value
Combines moderate R-value with significant thermal mass, smoothing indoor temperature and humidity swings.
Mold-Resistant When Properly Installed
The high-pH lime environment is hostile to mold growth when assemblies are detailed and dried correctly.
No Added VOCs
Made from hemp hurd, lime binder, and water — no added formaldehyde and no fiberglass particulates.
Long Service Life
Lime-bound hempcrete continues to carbonate over time, with documented historic precedents lasting many decades.
Our Installation Process
Free Consultation
We assess your project — new build or retrofit — and design a custom hempcrete solution.
Material Preparation
Our Gaiacrete™ proprietary blend is mixed on-site for optimal performance in your climate zone.
Professional Installation
Our certified team installs hempcrete walls using slip-form or spray application methods.
Finishing & Sealing
Natural lime plaster finish that's breathable, beautiful, and maintenance-free.
Hempcrete FAQ