Whenever the windows of a building used for human habitation receive their light from a yard, alley, court, or passageway, the line of which is formed by a fence six feet in height, wall or building five or less feet distant, such fence, wall, or building, facing such yard, alley, court, or passageway, shall be white-washed or painted white, and shall be maintained in such condition so as to reflect the maximum available light to such windows.
53 P.S. § 14936