To maintain high adhesion of a powder material to a base material, prevent scattering of the powder material, and inhibit harming of surrounding environment or loss of materials without performing dust collection by dust collection equipment or the like when the dry powder material is spread and adhered to the base material such as an inorganic board or the like.
The spreading method of the powder material 1 is used for spreading and adhering the powder material 1 to the surface of the base material. The powder material 1 is sprayed and spread on the surface of the base material. A water 4 is sprayed to the sprayed powder material 1 before it reaches the surface of the base material. Thereby, the powder material 1 is adhered to the base material with good adhesion, and it is possible to prevent scattering of the powder material 1.
Atsuo Mori
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