| abstract |
Provided is a method for coating a building material having an anti-staining function due to excellent hydrophilicity, and various functions relating to environment, such as mildewproofing, deodorization, antibacterial 5 properties and air purification The method for coating a building material includes applying, to the surface of the building material, a coating material containing a hydrophilic polymer selected from methyl silicate, water glass, colloidal silica, poly(meth)acrylic acid, polytetrafluoroethylene obtained by graft polymerization of sulfonic acid, and mixtures of two or more thereof, 10 and a photocatalyst selected from a titania'sol, titanium oxide surface-coated with zeolite, titanium oxide surface-coated with silica, titanium oxide surface-coated with apatite, and mixtures of two or more thereof; and drying the coating material to form a photocatalyst-containing coating film. |