Today, we put together 30 plastic crates to form the 2nd energy module (out of the 5 in total), wrapping it up in pond liner rubber sheeting.
Module-2-Wrapped-up-and-waiting-its-warm-jacket
Then installed lots and lots of PU insulation foam blocks all the way around the outer edges of the module. We mostly put in 250mm to 300mm thickness in total, sometimes in 3 layers, depending on what we have in our random pile of second-hand foam boards.
We have started filling in the gap with sand to secure the entire unit and then we will put on the final 100mm thick layer on top of the module tomorrow.