SOLAR ROOFING MATERIAL, SOLAR ROOF AND PROOFING MATERIAL

PROBLEM TO BE SOLVED: To prevent degradation of the photoelectric conversion efficiency caused by the dust deposited in a recessed part of a corrugated solar roofing material. SOLUTION: This solar roof 10 comprises a solar roofing material 100 in which a silicone layer is formed in at least a recessed part of a surface of a corrugated solar roofing material 10 having a solar battery layer, a titanium dioxide containing film 5 is formed on the silicone layer, and the contact angle of the titanium dioxide containing film 5 with the water is 10 deg. or under, and a roofing material 1000 in which a silicone layer is formed in at least a recessed part of a surface of the corrugated solar roofing material, the titanium dioxide containing film 5 is formed on the silicone layer, and the contact angle of the titanium dioxide containing film 5 with the water is 10 deg. or under. Even when the dust is deposited on the roof, rain or sprayed water enters between the hydrophilicized titanium dioxide containing film 5 and the dust, and the dust or the like is afloat and flows down. The dust or the like is less easily deposited in the recessed part, and degradation of the photoelectric conversion efficiency caused by the pollution can be prevented. The roofing material 1000 is less easily polluted similar to the solar roofing material 100, no marks are dotted by the difference in pollution, and the beautiful view can be maintained.