By Drew Guarini, Huffington Post
Imagine you had a building material that was energy-efficient, non-toxic and resistant to mold, insects and fire. The material may even have a higher R-value, or thermal resistance, than concrete, a claim that is still being investigated. The only problem? The base of the Hempcrete creation is hemp, which comes from the cannabis sativa plant -- the same one that produces marijuana, which is a federally banned substance. Because of this, industrial hemp production is illegal in the United States.
Still, the Hempcrete mixture of hemp, lime and water is being used to some extent for construction jobs across America. One of the companies working with Hempcrete is Hemp Technologies, a construction company based in North Carolina that is adamant about the advantages of building using Hempcrete. They’ve built homes out of hemp in Hawaii, Texas, Idaho and North Carolina, where they are currently working on a project known as "NauHaus."