PURPOSE: To provide a storage house for barning grains, having high durability of an assembling structure of each face plate and a laminated heat insulating material surely pressed onto the inner surface of each face plate and capable of preventing the heat insulating material from peeling and retaining the expected heat insulating properties for a long period.

CONSTITUTION: This storage house for barning grains has a box structure in which a floor plate 4, peripheral surface plates 7 and a top plate, etc., are assembled and constituted. The floor plate 4 has a hollow double wall structure of a rigid panel 2 and is constituted by interposing a heat insulating material 3 in the interior thereof. Each peripheral surface plate 7 is constituted by laminating the heat insulating material 6 on the inner surface of the rigid panel 5. A recessed groove 14 tightly fitting with the peripheral plate 7 is formed on the peripheral edge of the floor plate 4. A rising part 15 of the rigid panel forming the recessed groove 14 of the floor plate 4 and the rigid panel 6 of the peripheral plate 7 are fixed with a panel fixing part 17c of a tightening member 17 and the heat insulating material 6 on the inner surface of the peripheral plate 7 is pressed and held with a heat insulating material pressing part 17e.