Well you might ask - 'What has this to do with the construction of a shed?
Is it big Lego?
It is 2 corner units of rigid foam insulation, wrapped together.
The studio's foundation is made from these rigid foam blocks filled with concrete to make an 8 inch thick wall with a high insulation value.
The blocks act as form work for the concrete so there is very little construction timber needed to make the foundation.
We had a big storm and some of the blocks that were loose got blown around. But they didn't go far and weren't damaged.