山花板是中国、日本、朝鲜古代歇山顶建筑中覆盖屋顶两端三角形山面的木板，紧挨着博风板，常雕有花饰。也有用玻璃贴面代替山花板和博风板的做法。

中国在明、清以前的建筑，以及日本建筑的山花板缩进博风板内，间隔很大距离，从而部分受到挑檐的保护。清朝时期，按照北方官式，山花板外皮自山柱中心线向内收进一檩径的距离。

For the aerodynamic device, see Bargeboard (aerodynamics).

Bargeboard (probably from Medieval Latin bargus, or barcus, a scaffold, and not from the now obsolete synonym "vergeboard") is a board fastened to the projecting gables of a roof to give them strength, protection, and to conceal the otherwise exposed end of the horizontal timbers or purlins of the roof to which they were attached. Bargeboards are sometimes moulded only or carved, but as a rule the lower edges were cusped and had tracery in the spandrels besides being otherwise elaborated. The richest example in Britain is one at Ockwells in Berkshire (built 1446–1465), which is moulded and carved as if it were intended for internal work.