| 摘要 |
PROBLEM TO BE SOLVED: To provide a building board by which, if building boards are butted against one another vertically and horizontally, a butted portion between adjacent building boards is made inconspicuous, uneven feeling is emphasized, and designability is improved.SOLUTION: A building board 1 is formed by arranging plural tile-shaped convex parts 4 via a longitudinal joint 2 and a horizontal joint 3. At least part of all or some of the plural tile-shaped convex parts 4 is provided with a concave or convex curve surface 6. A curve 11 is drawn on the curve surface 6. |
