The EcoBlog
These NWEBG blog posts are written for the Pacific Northwest.
Hemp-Lime Is Now in the IRC
A new evolution of hemp and lime, Hemp-lime (Hempcrete) is now in the IRC (International Residential Code). This accomplishment was a decades long project of the US Hemp Building Foundation (USHBF). The USHBF explains, “Hempcrete insulation has been used in Europe for about 30 years, but couldn’t be included in US building codes until industrial hemp was legalized in the United States with the passage of the 2018 Farm Bill.” If you’re about to ask, “What happens when a hemp-lime home burns?”, meaning will you get high, the simple answer is “No” and “No”. No, industrial hemp does not contain any significant amounts of tetrahydrocannabinol (THC) – the molecule that causes a cannabis high when heated. And, No, hemp-lime will not burn.* In fact, ASTM test results in early 2020 scored a whopping “0,” the best possible rating on a scale of 0 to 450 for flammability. (ASTM methods and…