To provide a heat insulating decorative material excellent in non- combustibility, heat resistance, wheatherability and anti-staining properties, having air permeability and hydrophilicity and having excellent heat insulating properties because of heat reflectivity, heat radiation properties and evaporative radiant heat properties.
A base material is coated with a coating composition, which contains quaternary ammonium silicate (a), at least one curing agent (b) selected from the group consisting of a magnesium compound, a calcium compound and cement, a filler (c) and a solvent (d), preferably water and/or a hydrophilic organic solvent in a specific ratio and the coated base material is dried and cured under a specific condition to obtain the heat insulating decorative material.
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