The entire diorama fully primed.
An aluminum pizza plate was used to protect the foam around the opening in the base under the building. A red light will later be placed in the building to shine through the its windows.
The aluminum sheets were stapled to the wooden base.
Half of the work is done.
Inside the building the aluminum sheeting has to cover the foam but not exceeding from the building zone.
Needles were used to fix the aluminum sheet on the foam.
Here is the aluminum insulation almost completed.