US Hemp Building Association
The US Hemp Building Association is the first professional organization for hempcrete builders. It is aimed at achieving full certification of hemp based building materials, including the hemp lime, or hempcrete, building system. Many of our key distribution partners - including the well respected Cameron McIntosh of Americhanvre Cast Hemp- are founding members and are featured as USHBA board members.
Building With Hemp & Clay
Some of the most ancient building techniques utilized just hemp fiber stalks and clay. Today, builders have the historically unique ability to make a modern hempcrete recipe utilizing just raw hemp hurds and hydrated clay. We live in an exciting time, with an unprecedented access to high volumes of pure hemp hurds, and the technology required to produce them (proper mechanical decortication which cleanly separates bast fibers from hemp hurd / core; the greatest technological breakthrough of the past three hundred years). The implication of this high performance material has only just barely begun to be understood. No field has been more dramatically and immediately impacted as the construction industry. While Hemp Lime has been the preferred building material- due to its relative ease of drying- high quality hemp hurds allow an easier means to use cheap clays to build high performance structures.
Building with Hemp & Clay Challenges & Solutions
While cheaper and more natural than the Hemp Lime method, the Hemp Clay method is more difficult to dry properly after casting. While we always advocate using a high quality hemp hurd when building with hemp- regardless of your binder choice- it is especially important to select your hurd carefully when building with hydrated clay binder, as there is a greater risk of rot and mold. Use Chanvra Core or another CenC certified hemp hurd to ensure your hemp has optimal moisture content and low colony forming units, and be sure to monitor the wall carefully.
How to Build With Hemp & Clay
Michigan Hempcrete Workshops | The New Rising Sun Center for Ecological & Cultural Regeneration
Americhanvre Cast Hemp
Based in Allentown, PA, Americhanvre is leading the hempcrete industry, offering many opportunities for hempcrete workshops.