Has a dirt floor under the polystyrene foam [SA-22]
Product Information of "Has a dirt floor under the polystyrene foam"
Established as the concrete under the floor insulation, extruded contains common construction methods and special construction methods in the refrigerated warehouse about deckplate of polystyrene foam insulation Board.

Moisture barrier film and construction guidelines and more understanding with the sand layer and the features using the classification of the polystyrene foam plate. Not generally known or especially to laid like that why in the refrigerated warehouse.