| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent contraction due to the heat of the backup material of the rear face side of a roof material body, when the roof material body and the backup material are fixed in a roof material with a solar battery. SOLUTION: In the rood material, with the solar battery 10 for installing the solar battery 12 on a part of the surface of the roof material body 11 and providing the backup material 13 on the rear face side of the roof material body 11, the roof material body 11 and the backup material 13 are fixed on the rear face of the roof material body 11 except for a part installing the solar battery 12.</p> |
