Precast concrete by its nature is non-combustible.
Concrete is also a poor insulator and makes a poor choice for temperature sensitive applications such as cold-storage facilities, that is, unless it is insulated from the outside using a system like THERMOMASS.
This insulated precast concrete sandwich panel has significantly greater thermal properties than any other building method.
The concrete on the interior of the structure provides a high thermal mass, meaning that the energy load needed to cool it is significantly lower.
With the insulation on the outside, almost none of the ambient radiant heat can get through — creating a highly energy efficient, non-combustible structure, precast concrete insulation.