Hemp shivs or hurds are the core of the stem. In the construction industry, variously processed hemp straw (shivs or hurds) is used as a main component in bricks, particle board, insulation, and hempcrete, a concrete-like mixture that can be plastered or sprayed onto interior and exterior walls. Hemp building materials reverse the damaging effects of greenhouse gases by locking up harmful CO2 emissions. In essence, these materials breathe. They are also stronger and lighter than those used in traditional construction, and provide natural humidity and thermal control – all in one layer.
Hemp hurds are excellent for insulation, paper, and can be used as an alternative ingredient for making plastics, because of their naturally high level of cellulose. They are also used as a premium-quality animal bedding material due to high absorption properties, and can be pressed into pellets to create fuel for burning.