Our hemp blocks are made with our very own hempcrete binder, formulated with USA ingredients only. It is truly a Made in USA, lime-based binder, designed for performance and longevity. It took experimentation with more than 21 different formulas over the course of 3 years of research and development before perfecting this special hempcrete binder.
The Hemp and Block hempcrete binder is best described as a pozzolanic hydrated lime binder, totally free of Portland cement.
Sustainability
Our hempcrete binder is formulated to achieve a low carbon footprint in its production and use. The less energy and resources required to produce this material, the more sustainable and energy efficient it becomes.
For example, in the production of hydrated lime, it’s fired at much lower temperatures than what is required for making Portland cement clinker. Therefore using more hydrated lime in construction and less Portland cement improves sustainability.
Next, consider the additional minerals or ash that can be added to hydrated lime to increase its strength and hydraulic effect. Fly ash, blast furnace slag, metal dust from ironworks, calcined (fired) clays, and volcanic based materials. Each of these has its own footprint (energy inputs required for production). Some may have inherent pollutants or exposure to elements that you’d prefer not to touch.
We favor using volcanic based materials when possible, as they are naturally calcined (activated) and do not require additional firing. These incredible materials were activated by the original volcanic explosion hundreds of thousands (or millions) of years ago!
This is a key part of why the Hemp and Block hempcrete binder is truly a “low footprint” building material. It will maximize the sustainability of your hempcrete/hemp-lime projects, help qualify for LEED points/Green Energy certifications and more!
A special history
Our hempcrete binder and mix designs are based in part on the most magnificent, long-standing structures of human history. Notably, the Roman Pantheon, still standing proud after nearly 2,000 years. The Pantheon is a marvel of engineering, as the worlds largest unreinforced (e.g. no “steel rebar”) concrete dome, at 142 feet in diameter. And the foundation of Roman concrete, was the combination of volcanic ash pozzolan and powdered limestone.
Additionally, this hempcrete binder is compatible with historic masonry and conservation work. It’s “breathable” and flexible unlike mortars and plasters made with lots of Portland cement, which can be excessively hard, brittle and damage softer stonework/masonry.
Shipping options
The shopping cart is setup with FedEx Ground delivery for smaller orders, such as 1-5 bags. For larger orders, contact us for a free freight quote.
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