I am building soon, and was thinking of using mudbricks. I came across some articles from the UK talking about Hempcrete. Interesting stuff. I tracked down a guy in Oz that sells it - davide.m@iprojects.com.au He sent me some technical info which almost has me hooked.
Has anyone used it? Seen it first hand? Is it as good as is claimed? Its expensive stuff I think, so it would need to be good to justify the extra $...