Scotty T
Walks the walk
It's fire resistant.On the plus side, when your house burns down, everyone just lays around giggling.
We looked into it for our renovation/extension.
It seems great, but as @dancaseyimages said difficult to find people and expensive. You also have to design your house with walls twice as thick or more than traditional material so you lose space in the footprint and it's harder to design. The hemp is between 25-55% with the rest being binder, lowest hemp content in walls that are structural.
We don't have the budget and I don't want to spend a year or more owner-buildering because there are no end-to-end builders doing it. There's also very little in the way of lifecycle studies compared to other materials so it's difficult to actually make the call on how much better it is environmentally than traditional building. By traditional building, I mean well designed and built stuff with a focus on energy efficiency, not the rubbish we generally build in Aus.
It's also hard to do an extension to a building with it because it's difficult to tie in properly. It think it needs a massive company to do a Tesla on the building industry to get anywhere.