First, I want to apologize for our website. We are in the midst of a major overhaul and upgrade. We will have the new site up soon.
That's amazing that you've built a cinva ram. They are super tough machines, but also a bear
to operate. Have you used it to build anything?
Jim has insulated many of the buildings he has built, depending on the climate. It can be done with very unsustainable products, such as polystyrene sheets or spray
foam insulation, but the idea is to use something more natural that is still effective. We have a friend in northern Canada that is planning on building with CEBs that are insulated with rock wool
panels, which are much more sustainable
. Our lab was recently sent two bags of cork and lime based insulation (Diathonite Evolution) from a company in Italy called Diasen. We have not started testing it, but we think
it might be great. We have worked with insulation grown from mushroom
mycelium. It is very cool stuff, but we can't find a source for pre-made panels of it and it's cumbersome to produce in-house.
A common way that we build with CEBs in cold climates is to build a double wall with a four to six inch gap between the walls. This gap can be filled with various types of insulation. You could use things such as vermiculite, pummice, cellulose or one of the unsustainable types. We do recommend that the insulation be breathable, because the walls are, and it would be a shame to block the transfer of water
vapor through the wall.
I'm glad you're excited about compressed earth blocks and am looking forward to some great conversations.