Tradical Hemcrete

Credit: American Lime Technology

What makes this product green?

  • Reduces heating and cooling loads
  • Low-emitting
  • Biobased and sustainably sourced


Tradical Hemcrete is a non-structural, rigid, insulating, composite wall fill comprised (by weight) of about 38% hemp and 62% lime-based binderGlue used in manufactured wood products, such as medium-density fiberboard (MDF), particleboard, and engineered lumber. Some binders are made with formaldehyde. See urea-formaldehyde binder and methyl diisocyanate (MDI) binder. . The dried stems of hemp are mixed with the lime-based binder and the mix is placed into removable wall forms. Suitable for moderate climates, the walls insulate at R-2.3 per inch, according to the manufacturer, and are typically 12-inches thick, so they provide about R-28. The Hemcrete walls are finished on the exterior with lime stucco and on the interior with lime plaster. The Tradical lime binder is manufactured in the U.K. by Lime Technology, Ltd. and the industrial hemp is sourced from England, where it can be grown legally. (It is illegal to grow hemp in the U.S., but American Lime Technology is working to find a more local source in Canada.)

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Manufacturer Information

American Lime Technology
3516 N. Kostner Ave.
Chicago, IL 60641
Phone: 773-286-0566
Fax: 773-286-1852

Listed in: Board Insulation, Cast-in-Place Concrete, Earthen Unit Masonry


Jan 22, 2016 2:37 PM ET

Any interest in Hempcrete?
by Ethan T ; Climate Zone 5A ; ~6000HDD

I have started to really wonder about the Global Warming Potential of all this foam and whether it is a good idea. Thus, I've been trying to learn more about Hempcrete, its qualities and its applicability to construction in the Northeast US. Is there any experience here with Hempcrete blocks and/or monolithic installations?