Reddit mentions of The Hempcrete Book: Designing and Building with Hemp-Lime (Sustainable Building)

https://www.amazon.com/Hempcrete-Book-Designing-Hemp-Lime-Sustainable/dp/0857841203/ref=sr_1_1?ie=UTF8&qid=1466731405&sr=8-1&keywords=building+with+hemp+lime

https://www.youtube.com/watch?v=MoYIBdzZYWI

"So we have here is a hemp shiv or also called the hurd which is the internal part of the stem of the pant. That’s mixed with a lime based binder, so with that lime based binder and the hemp we’ve got a negative carbon footprint. Now the difference between lime and concrete is that lime you don’t have to heat up as much with concrete you have to heat it up to almost 3,000 degrees which takes a lot of energy and does very poorly on the carbon footprint. Hempcrete actually sequesters carbon, let me tell you how it does that first of all any cellulose material would for example or hemp takes carbon in during its life cycle and usually when it decays it lets it back into the atmosphere. If you take that plant and put it into a wall and for example hempcrete than that carbon is now sequestered in the wall and not becoming part of climate change. This building what I’m building alone will sequester 20,000 lbs of carbon that’s a pretty big accomplishment. I think this is the best wall system in the world. I’m all about hemp I think hemp is an important thing to push because it’s food, fiber, building material, but really i’m choosing this building material because it’s the best in term of buildings styles. Why is this true? First of all because this is a breathable wall system. I don’t mean breathable for air we’re actually building an airtight wall, but it’s breathable for water. Why is that an advantage? Well in a typical wall you have a cavity that you seal tightly and you fill with insulation, well, water will get inside that cavity because that’s its job, in the world , our body is 70% water, it can dissolve any material anyway so what we want to do in a building is create a wall that welcomes water but doesn’t rot when it lets the water in and that’s exactly what hempcrete does. When humidity changes in the air outside the wall can take on that extra humidity and hold it until the humidity drops outside then it will let it back out in the meantime because the lime is wrapped around the cellulose the cellulose won’t rot. The lime is trying to go back to being a rock this means that this wall is going to get harder and harder and harder over time it’s going to petrify. So these walls will last for 1,000s of years not 40 years like what we are used to building."