Down to Earth Materials


The United States' first scalable ag waste to construction materials company.

What’s unique about our process is that our aggregate is sourced entirely from agriculture and forestry waste. By sourcing waste, we are able to provide the most cost effective bioaggregates in the United States. We pass these savings onto you in our line of hempcrete blocks called Stonefiber. Materials come in prefabricated blocks of varying size for quick and easy installation in commercial and residential buildings. The blocks can be deployed as subfloor, roof, or wall insulation. They can also be used to form nonstructural partition walls.

Robust, reliable & sustainable materials

Supply Chain

Aggregates made from agriculture residues

IBC & IRC Compliant

Compliance with national residential building code


Product warranty backed by professional engineers stamp

Carbon Negative

Blocks remove carbon from the environment

Materials designed to exceed expectations

Healthier Alternative

  • Subfloor, Wall, Siding, & Roof Products

  • No EPS/XPS Rigid Foam Insulation

  • Water Barrier + Vapor Regulation

  • Carbon Negative Material

  • Partially Made Using Recycled Materials

  • CA Title 24 Compliance

Increased Performance

  • R-5 to R-50

  • Acoustic Insulation

  • Class A1 Fire Resistant

  • 2x Thermal Mass of Concrete

  • Mold and Mildew Resistance

  • Easy to Shape and Cut

Test Results

Saving the world, one block at a time


Carbon emissions (CO2e) reduction


Of agriculture waste salvaged


Blocks sold to-date

With funding and support from:

Contact us

Questions? Need a quote? Reach out to us below!  •  (747) 400-9550
2650 W Andrews Ave Fresno, CA 93705