When tested, it achieves 4 hr. fire ratings to systems that employed vermiculite as one of the components.
Excellent insulating properties. 3 inches of Fire Resistant concrete is equivalent to 1 1/2" of rigid board insulation layer over steel decks. 1 inch of vermiculite concrete is equal in insulating value to 20 inches of regular concrete
When compared with structural grade concrete, it is 60% of the weight. This leads to considerable savings from the footings through the structural steel.
It can be applied over a variety of bases, allowing architects and engineers a lot of flexibility in their design criteria. The thickness can be varied to permit necessary slope to drain.