| 摘要 |
PROBLEM TO BE SOLVED: To provide a building board having such shape that a peripheral face of a projecting pattern part is inclined and irregular face capable of joining divided projecting pattern parts arranged on both sides without causing a clearance to produce all projecting pattern parts and forming a recessed pattern like a breaking joint giving no sense of incongruity when a plurality of boards are joined in their end parts while facilitating its forming. SOLUTION: In this building board 10 constituted such that substantially square recessed and projecting patterns having feeling of tile, brick, and stone are formed on a surface of the board member, a recessed and projecting pattern part 21 is further formed on a surface of a projecting pattern part 12, and the peripheral face 22 is inclined and irregular recessed and projecting face, one side fringe of the building board is formed by aligning an end face of a divided vertical joint part 13a forming a recessed pattern part and an end face of a divided projecting pattern part 21a dividing the projecting pattern part 12 mutually, and the other side fringe thereof is formed by aligning an end face of a vertical joint part 13b corresponding to a part left after dividing a vertical joint part 13 and an end face of a divided recessed pattern part 12b corresponding to a part left after dividing the projecting pattern part 12 mutually.
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