Warehouses are objects frequently Steel. While variable temperature conditions for condensation of water vapor on the surface of the sheet from underneath. This phenomenon is known to all, who has a steel hall or similar building.
The best solution in terms of cost, effectiveness, durability and speed of performance is spraying the underside of a polyurethane foam. A layer with a thickness of at least 2cm is able to stop the process of condensation of the condition, that the object is not heated and there is a drastic difference in temperature, otherwise the foam layer has a thickness of 2cm is not sufficient.