Insulations of walls and ceilings from the interior are a very common application of the sprayed hard foam. It is used mainly for industrial and agricultural structures.
A special polyurethane system has been designed for this purpose which has a low weight and a very short time needed for the start of the chemical reaction. Thus, the hard foam can be sprayed without any problems on the ceiling structure from the bottom. Polyurethane insulation is absolutely harmless and can be used in the animal, plant and food processing industries.